Research projects
Research projects
전산화단층촬영 영상 기반 혼합형 플라크의 정량화 기술이 적용된 관상동맥 질환의 진행도 예측 모델 개발, 학문후속세대지원사업 박사과정생연구장려금, 한국연구재단, 2025. 09 - 2027. 08.
소듐 포타슘 동시 측정을 위한 11.7T 자기공명 영상기술 연구, 글로벌 기초연구실, 한국연구재단, 2025. 06 - 2028. 05.
비만 환자의 관상동맥 CT 기반 칼슘 스코어링 정확성 향상을 위한 영상 복원 알고리즘 개발, 우수연구자지원과제, 가천대학교, 2025. 05 - 2026. 05.
고령인구에서 인지 능력과 DTI-ALPS index의 종단적 연관성, 우수연구자지원과제, 가천대학교, 2024. 05 - 2025. 05.
관상동맥 석회화 검출을 위한 가상 격자 기반 CT 영상의 정확한 칼슘 스코어링 기법 개발, 개인기초연구사업 우수신진연구, 한국연구재단, 2024. 04 - 2027. 03.
전산화단층촬영 영상에서 딥 러닝 기반 블록 매칭 및 3D 필터링 알고리즘의 성능 평가 및 최적화, 우수연구자지원과제, 가천대학교, 2023. 05 - 2024. 05.
가상 격자를 사용한 유방 X선 영상의 노이즈 증폭 현상 극복을 위한 딥러닝 기반 영상복원 framework 개발, 여대학원생 공학연구팀제 지원사업, 한국여성과학기술육성재단, 2023. 05 - 2023. 11.
대학 창의적 자산 실용화 지원사업 (디지털 의료기기), BRIDGE+ 대학 간 융복합 프로젝트, 한국연구재단, 2022. 12 - 2023. 02.
CsI 물질 기반의 개선된 전신검사용 X-선 검출기시스템 개발 및 성능평가, 여대학원생 공학연구팀제 지원사업, 한국여성과학기술육성재단, 2022. 05 - 2022. 11.
정확한 치주염 진단을 위한 딥러닝 및 3D 프린팅 기술 기반 저선량 spectral 디지털단층영상합성 X-선 영상 화질 개선, 이공분야기초연구사업 기본연구, 한국연구재단 과학기술정보통신부, 2021. 06 - 2024. 02.
전산화단층촬영의 선량 저감화를 위한 주석 필터 기반 융합형 노이즈 제거 알고리즘 개발 및 적용, Pump-Priming 전담과제, 가천대학교, 2021. 05 - 2023. 05.
초음파 영상의 노이즈 제거를 위한 3D 프린팅 팬텀 기반 개선된 적응형 중앙값 필터 개발 및 적용, 우수연구자지원과제, 가천대학교, 2021. 05 - 2022. 05.
3D 프린팅 팬텀 기반 컨볼루션 신경망이 적용된 고관절 골절 검출을 위한 컴퓨터 보조 진단 시스템 개발, 연구인력초기지원과제, 가천대학교, 2020. 05 - 2021. 05.
광자계수형 spectral X-선 영상 기반 개선된 Median Modified Wiener Filter (MMWF) 알고리즘 개발 및 적용, 신진교수후속연구과제, 가천대학교, 2020. 05 - 2021. 05.
3D 프린터 기반 전산화단층촬영 영상에서의 뇌 병변 진단률 향상을 위한 초고효율 Fast non-local means 노이즈 제거 알고리즘 개발, 이공분야기초연구사업 기본연구, 한국연구재단 과학기술정보통신부, 2019. 06 - 2020. 05.
광자계수형 CdTe 검출기 기반 개선된 K-edge log-subtraction X-선 영상의 Total Variation 노이즈 제거 알고리즘 적용, 학부생연구프로그램 (URP), 한국과학창의재단, 2018. 07 - 2018. 12.
전산화단층촬영장치에서 3D 프린터로 제작된 소아용 CTDI 팬텀을 이용한 fast non-local means (FNLM) 노이즈 제거 알고리즘의 적용에 관한 연구, 학부생연구프로그램 (URP), 한국과학창의재단, 2018. 07 - 2018. 12.
심장 초음파 검사 시 near field clutter 아티팩트 제거를 위한 threshoding 기법이 적용된 Wavelet 변환 알고리즘 개발에 관한 연구, 학부생연구프로그램 (URP), 한국과학창의재단, 2018. 07 - 2018. 12.
광자계수형 융합영상 시스템 기반 인공지능 노이즈 제거 알고리즘 개발, 학부생연구프로그램 (URP), 한국과학창의재단, 2018. 07 - 2018. 12.
확산강조 자기공명영상의 b-value 변화에 따른 새롭게 개발된 non local self-similarity (NSS) 기법 기반 patch group 노이즈 제거 알고리즘 적용, 가천대학교 신임교수연구과제, 2018. 05 - 2019. 05.
개선된 Total Variation (TV) 기반 노이즈 제거 알고리즘 개발 및 진단 의료 영상 적용에 관한 연구, 학부생연구프로그램 (URP), 한국과학창의재단, 2017. 06 - 2017. 11.
인공지능 노이즈 제거 알고리즘을 적용한 초고분해능 픽셀화 반도체 검출기 시스템 개발, 이공학 개인기초연구지원사업 기본연구, 한국연구재단 미래창조과학부, 2016. 11 - 2019. 10.
소아 CT 검사 기반 인공지능 노이즈 제거 알고리즘을 사용한 선량과 화질의 최적화 연구, 학부생연구프로그램 (URP), 한국과학창의재단, 2016. 06 - 2016. 11.
In progress
Hajin Kim, Youngjin Lee, Application and optimization of Lee filter for segmentation of benign tumor in breast ultrasound images, Journal of Medical Physics, under review.
Hajin Kim, Youngjin Lee, Optimized median modified Wiener filter-based segmentation of lung cancer in PET/CT images, Nuclear Engineering and Technology, under review.
Hajin Kim, Youngjin Lee, Improved noise reduction performance in low-dose computed tomography with optimized trainable bilateral filtering: a multi-organ evaluation, Applied Radiation and Isotopes, under review.
Hajin Kim, Sewon Lim, Youngjin Lee, A comparative evaluation of manually optimized and adaptive non-local means approaches in abdominal low-dose CT images, Applied Radiation and Isotopes, under review.
Hajin Kim, Sewon Lim, Minji Park, Jina Shim, Kyuseok Kim, Youngjin Lee, Effect of body mass index on liver fat quantification and coronary artery calcium scoring in computed tomography images, Journal of Magnetics, under review.
Hyunji Amy Kim, Estella Choi, Elliott Choi, Kyung-Bae Lee, Daegun Kim, Youngjin Lee, Jae-Hong Jung, James J. Sohn, A Real-Time Patient Orientation Verification System Using Pose Estimation in CT Simulation: Just another secondary evaluation (JASE), Radiological Physics and Technology, under review.
Jae-Hong Jung, Kyung-Bae Lee, Youngjin Lee, Development and comparative evaluation of a webcam-based and barcode scanner-based check-in/check-out system for enhancing thermoluminescent dosimeter management, Nuclear Engineering and Technology, under review.
Jina Shim, Kyuseok Kim, Youngjin Lee, Improving the accuracy of coronary artery calcium scoring in computed tomography images using a fast nonlocal means noise-reduction algorithm, Biomedical Signal Processing and Control, under review.
Kang-Hyeon Seo, Hajin Kim, Kyuseok Kim, Youngjin Lee, Cerebral arteries segmentation based on projection domain in single exposure computed tomographic angiography, Radiation Physics and Chemistry, under review.
Kyuseok Kim, Caterina Battaglia, Youngjin Lee, Investigation of an intracranial artery segmentation model with an effective contrast enhancement method as a preprocessing method in digital subtraction angiography, Physica Medica, under review.
Kyuseok Kim, Hyun-Woo Jeong, Youngjin Lee, Performance evaluation of dorsal vein recognition using relative total variation based regularization for smoothing technique in miniaturized vein imaging system, BMC Medical Imaging, under review.
Kyuseok Kim, Youngjin Lee, Cerebrovascular extraction method using the texture analysis and deep learning in time-sequential digital subtraction angiography, Physica Medica, under review.
Kyuseok Kim, Youngjin Lee, Soo-Bin Kim, Hee-Jin Kim, Image deconvolution based on noise characteristics for enhanced visualization of the temporalis tendon and coronoid process in intraoral ultrasonography, Physica Medica, under review.
Sewon Lim, Youngjin Lee, Longitudinal analysis of hippocampal subfield atrophy and network centrality in association with cognitive decline in Alzheimer’s disease progression, Medical Physics, under review.
Sewon Lim, Youngjin Lee, Chang-Soo Yun, Kyuseok Kim, Chang-Ho Yun, Longitudinal association of DTI-ALPS index with amyloid beta deposition and cognition, Annals of Neurology, under review.
Sewon Lim, Hajin Kim, Kang-Hyeon Seo, Youngjin Lee, Modeling of Severity Classification Algorithm using Abdominal Aortic Aneurysm Computed Tomography Image Segmentation based on U-Net with Improved Noise Reduction Performance, Sensors, under review.
Yeochan Youn, Gaoyuan Shao, Yelang Lee, Leah Chung, Kyung-Bae Lee, Dae-Gun Kim, Youngjin Lee, Jae-Hong Jung, James J. Sohn, Biometric Occupancy Detection Algorithm (BODA): A YOLO-Based Safety Interlock for Enhancing Radiotherapy Room Safety, Radiological Physics and Technology, under review.
Hajin Kim, Youngjin Lee, Trainable bilateral filter for enhanced segmentation performance in lung cancer PET images, Nuclear Engineering and Technology, in preparation.
Jae-Hong Jung, Daegun Kim, Kyung-Bae Lee, Kwang Hwan Cho, Seung-Gu Yeo, Youngjin Lee, Enhancing Patient Safety in Radiation Therapy with Computer Vision: A System for Patient Identification, Motion, and Personnel Detection, Nuclear Engineering and Technology, in preparation.
Sewon Lim, Su-Kyung Kim, Woonghee Lee, Youngjin Lee, SUVR and DTI-ALPS index as features in deep learning models for Alzheimer’s disease prediction, Medical Physics, in preparation.
2025 publications
Jina Shim, Youngjin Lee, Kyuseok Kim, Quantitative evaluation of low-dose CT image quality using deep learning reconstruction: a comparative study of Philips Precise Image and GE TrueFidelity, Journal of Imaging, vol. 11, pp. 317, 2025. 09. 16.
Soungmo Park, Seong-Hyeon Kang, Youngjin Lee, Optimization of the Non-Local Means Algorithm for Breast Diffusion-Weighted Magnetic Resonance Imaging Using a 3D-Printed Breast-Mimicking Phantom, Life, vol. 15, pp. 1373, 2025. 08. 29.
Taehun Hong, Seonyeoung Hong, Eonju Do, Hyewon Ko, Kyuseok Kim, Youngjin Lee, Enhanced Cerebrovascular Extraction Using Vessel-Specific Preprocessing of Time-Series Digital Subtraction Angiograph, Photonics, vol. 12, pp. 852, 2025. 08. 25.
Sewon Lim, Hajin Kim, Youngjin Lee, Longitudinal tract-based spatial statistics analysis of white matter diffusivity changes and cognitive decline during the transition from MCI to Alzheimer’s disease, PLoS One, vol. 20, pp. e0329893, 2025. 08. 05.
Hajin Kim, Kang-Hyeon Seo, Kyuseok Kim, Jina Shim, Youngjin Lee, Application and optimization of the U-Net++ model for cerebral artery segmentation based on computed tomographic angiography images, European Journal of Radiology, vol. 188, pp. 112137, 2025. 07. 31.
Youngjin Lee, Min-Gwan Lee, Seungwan Lee, Chanrok Park, Performance evaluation of ResNet model for noise reduction according to Gaussian noise in nuclear medicine images, Journal of Magnetics, vol. 30, pp. 195-202, 2025. 06. 30.
Jae-Hong Jung, Daegun Kim, Kyung-Bae Lee, Youngjin Lee, Performance Evaluation of Large Language Model Chatbots for Radiation Therapy Education, Information, vol. 16, pp. 521, 2025. 06. 22.
Seong-Hyeon Kang, Kyuseok Kim, Jina Shim, Youngjin Lee, Feasibility of U-Net model for cerebral arteries segmentation with low-dose computed tomography angiographic images with pre-processing methods, Scientific Reports, vol. 15, pp. 13281, 2025. 04. 17.
Kyuseok Kim, Hajin Kim, Sewon Lim, Seong-Hyeon Kang, Youngjin Lee, Exemplar-Based Inpainting Algorithm for Metal Artifact Areas in Brain Magnetic Resonance Images, Journal of Magnetics, vol. 30, pp. 67-73, 2025. 03. 31.
Youngjin Lee, Noise level and no-reference-based evaluations for gamma-ray image using non-local means algorithm with CZT photon counting semiconductor detector, Applied Radiation and Isotopes, vol. 217, pp. 111628, 2025. 03. 31.
Minkyoung Kim, Kyuseok Kim, Hyun-Woo Jeong, Youngjin Lee, Quantitative evaluation of kidney and gallbladder stones by texture analysis using gray level co-occurrence matrix based on diagnostic ultrasound images, Journal of Clinical Medicine, vol. 14, pp. 2268, 2025. 03. 26.
Kyuseok Kim, Youngjin Lee, Investigation of blind deconvolution method with total variation regularization in cardiac cine magnetic resonance imaging, Electronics, vol. 14, pp. 743, 2025. 02. 13.
Dohyeon Kim, Haenghwa Lee, Dong-Seok Shin, Youngjin Lee, Feasibility study of hybrid scanning technique parameters on dose reduction and CT-image quality, Radiation Physics and Chemistry, vol. 226, pp. 112179, 2025. 01. 31.
Kyuseok Kim, Youngjin Lee, Gray-level co-occurrence matrix uniformity correction algorithm in positron emission tomographic image: a phantom study, Photonics, vol. 12, pp. 33, 2025. 01. 03.
2024 publications
Kyuseok Kim, Hyun-Woo Jeong, Youngjin Lee, Dictionary learning-based denoising algorithm with expected patch log likelihood in diffusion-weighted magnetic resonance image, Journal of the Korean Physical Society, vol. 85, pp. 763-771, 2024. 11. 30.
Hajin Kim, Juho Park, Jina Shim, Youngjin Lee, Application and optimization of fast non-local means noise reduction algorithm in pediatric abdominal virtual monoenergetic images, Electronics, vol. 13, pp. 4684, 2024. 11. 27.
Hajin Kim, Bo Kyung Cha, Kyuseok Kim, Youngjin Lee, Application of adaptive search window-based nonlocal total variation filter in low-dose computed tomography images: A phantom study, Applied Sciences, vol. 14, pp. 10886, 2024. 11. 24.
Jina Shim, Kyuseok Kim, Youngjin Lee, Evidence-based investigation of coronary calcium score in cardiac computed tomography, Applied Sciences, vol. 14, pp. 8906, 2024. 10. 03.
Jina Shim, Seong-Hyeon Kang, Youngjin Lee, Utility of block-matching and 3D filter for reproducibility of lung density and denoising in low-dose chest CT: a pilot study, Physica Medica, vol. 124, pp. 103432, 2024. 08. 31.
Minji Park, Hajin Kim, Sewon Lim, Jae-Young Kim, Youngjin Lee, Optimization of smoothing parameter for block matching and 3D filtering algorithm in low-dose chest and abdominal computed tomography images, Applied Radiation and Isotopes, vol. 210, pp. 111374, 2024. 08. 31.
Youngjin Lee, Seungwan Lee, Chanrok Park, Deep residual learning with Anscombe transformation for low-dose digital tomosynthesis, Journal of the Korean Physical Society, vol. 85, pp. 333-341, 2024. 08. 30.
Hajin Kim, Jun-Seon Choi, Youngjin Lee, Assessment of FDK reconstruction parameters on overall image quality in cone beam computed tomography, Applied Sciences, vol. 14, pp. 7058, 2024. 08. 12.
Hajin Kim, Minji Park, Sewon Lim, Kyuseok Kim, Seong-Hyeon Kang, Youngjin Lee, Study on application of the fast non-local means algorithm for noise reduction in computed tomographic images using 3D printed phantom, Diagnostics, vol. 14, pp. 1589, 2024. 07. 23.
Kyuseok Kim, Chanrok Park, Youngjin Lee, Optimization of a regularization weight for bias field correction with gray-level co-occurrence matrix in image with PET/MR imaging system, Journal of Magnetics, vol. 29, pp. 237-244, 2024. 06. 30.
Kyuseok Kim, Youngjin Lee, Block-matching and 3D filtering algorithm in X-ray image with photon counting detector using improved K-edge subtraction method, Nuclear Engineering and Technology, vol. 56, pp. 2057-2062, 2024. 06. 30.
Jina Shim, Youngjin Lee, No-Reference-Based and Noise Level Evaluations of Cinematic Rendering in Bone Computed Tomography, Bioengineering, vol. 11, pp. 563, 2024. 06. 02.
Sewon Lim, Minji Park, Hajin Kim, Seong-Hyeon Kang, Youngjin Lee, Quantitative analysis of fast non-local means algorithm smoothing factor impact on lung segmentation accuracy in computed tomography images, Radiation Physics and Chemistry, vol. 218, pp. 111645, 2024. 05. 31.
Chaehyeon Song, Yubin Jin, Jina Shim, Seong-Hyeon Kang, Youngjin Lee, Usefulness Evaluation for Nonlocal Means Algorithm in Low-Dose Computed Tomography with Various Iterative Reconstruction Intensities and Kernels: A Pilot Study, Applied Sciences, vol. 14, pp. 3392, 2024. 04. 17.
Juyoung Park, Seyoung Song, Seong-Hyeon Kang, Youngjin Lee, Performance evaluation of improved median modified Wiener filter with segmentation method to improve resolution in computed tomographic images, Journal of the Korean Physical Society, vol. 84, pp. 550-565, 2024. 04. 15.
Kyuseok Kim, Minji Park, Sewon Lim, Hajin Kim, Seong-Hyeon Kang, Hyun-Woo Jeong, Youngjin Lee, Optimization of search window and mask size for non-local means noise reduction algorithm in chest digital tomosynthesis, Journal of the Korean Physical Society, vol. 84, pp. 566-572, 2024. 04. 15.
Jina Shim, Seungwan Lee, Youngjin Lee, Performance evaluation of noise level and blind quality in computed tomographic images using deep-learning image reconstruction, Journal of Magnetics, vol. 29, pp. 63-70, 2024. 03. 31.
Chanrok Park, Youngjin Lee, Fusion Algorithm in MR/PET using Attenuation Correction based on Ultrashort Echo-Time Pulse Sequences for Image Quality Improvement, Journal of Magnetics, vol. 29, pp. 117-122, 2024. 03. 31.
Kyuseok Kim, Bo Kyung Cha, Hyun-Woo Jeong, Youngjin Lee, Investigation of deconvolution method with adaptive point spread function depend on the scintillator thickness in wavelet domain, Bioengineering, vol. 11, pp. 330, 2024. 03. 28.
Seong-Hyeon Kang, Youngjin Lee, Performance comparison of U-Net models for motion artifact reduction with two image domain-based simulated datasets in magnetic resonance imaging, Bioengineering, vol. 11, pp. 227, 2024. 02. 27.
Kyuseok Kim, Eun Il Cho, Hyun-Woo Jeong, Youngjin Lee, Performance and usefulness evaluation of a software-based scatter correction technique in mammographic image, Heliyon, vol. 10, pp. e24862, 2024. 01. 31.
2023 publications
Yunhee Mo, Seong-Hyeon Kang, Youngjin Lee, Optimization and performance evaluation of the median modified Wiener filter algorithm in breast X-ray image, Journal of Magnetics, vol. 28, pp. 392-400, 2023. 12. 31.
Kyuseok Kim, Youngjin Lee, Adaptive non-blind deconvolution with structural similarity index in single photon emission computed tomography, Nuclear Engineering and Technology, vol. 55, pp. 4591-4596, 2023. 12. 31.
Bo Kyung Cha, Kyung-Hee Lee, Youngjin Lee, Kyuseok Kim, Optimization Method to Predict Optimal Noise Reduction Parameters for the Non-Local Means Algorithm Based on the Scintillator Thickness in Radiography, Sensors, vol. 23, pp. 9803, 2023. 12. 13.
Sewon Lim, Hayun Nam, Hyemin Shin, Sein Jeong, Kyuseok Kim, Youngjin Lee, Noise Reduction for a Virtual Grid Using a Generative Adversarial Network in Breast X-ray Images, Journal of Imaging, vol. 9, pp. 272, 2023. 12. 07.
Ryeonhui Kim, Kyuseok Kim, Youngjin Lee, A Multiscale Deep Encoder–Decoder with Phase Congruency Algorithm Based on Deep Learning for Improving Diagnostic Ultrasound Image Quality, Applied Sciences, vol. 13, pp. 12928, 2023. 12. 03.
Jina Shim, Kyuseok Kim, Youngjin Lee, A study on the effect of iodine concentration reduction by comparison of virtual monoenergetic image quality with dual energy computed tomography, Applied Radiation and Isotopes, vol. 200, pp. 110967, 2023. 10. 31.
Bo Kyung Cha, Youngjin Lee, Kyuseok Kim, Development of Adaptive Point-Spread Function Estimation Method in Various Scintillation Detector Thickness for X-ray Imaging, Sensors, vol. 23, pp. 8185, 2023. 09. 30.
Sewon Lim, Minji Park, Hajin Kim, Seong-Hyeon Kang, Kyuseok Kim, Youngjin Lee, Optimization of Median Modified Wiener Filter for Improving Lung Segmentation Performance in Low-Dose Computed Tomography Images, Applied Sciences, vol. 13, pp. 10679, 2023. 09. 26.
Kyuseok Kim, Youngjin Lee, Spatial resolution and natural image quality assessment evaluation of gamma camera image using pinhole collimator in lutetium-yttrium oxyorthosilicate scintillation detector, Nuclear Engineering and Technology, vol. 55, pp. 2567-2571, 2023. 07. 31.
Minji Park, Seong-Hyeon Kang, Kyuseok Kim, Youngjin Lee, Simulation and experimental studies of optimization of σ-value for block-matching and 3D filtering algorithm in magnetic resonance images, Applied Sciences, vol. 13, pp. 8803, 2023. 07. 30.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Comparison of filtered back projection with fast non-local means denoising approach and iterative reconstruction in pediatric chest CT image using 3D printed lung nodules, Journal of the Korean Physical Society, vol. 82, pp. 1114-1123, 2023. 07. 15.
Chanrok Park, Youngjin Lee, Adjustable three-layer collimator in a pixelated photon-counting detector for gamma-ray imaging: A novel concept for a variable collimator, Nuclear Instruments and Methods in Physics Research A, vol. 1051, pp. 168227, 2023. 06. 30.
Seong-Hyeon Kang, Seungwan Lee, Youngjin Lee, Experimental study of optimization of noise level in brain SPECT images using non-local means approach with various reconstruction methods, Nuclear Engineering and Technology, vol. 55, pp. 1527-1532, 2023. 05. 31.
Kang-Hyeon Seo, Seong-Hyeon Kang, Jina Shim, Youngjin Lee, Optimization of smoothing factor for fast non-local means algorithm in high pitch based low-dose CT images with tin-filter, Radiation Physics and Chemistry, vol. 206, pp. 110762, 2023. 05. 31.
Mingyu Song, Minsoo Kim, Junsoo Lim, Donghwan Chun, Minji Park, Jina Shim, Youngjin Lee, Feasibility study of block-matching and 3D filtering algorithm in low-dose CT image with tin filter, Journal of Magnetics, vol. 28, pp. 56-63, 2023. 03. 31.
Chanrok Park, Youngjin Lee, A Monte Carlo simulation study of performance evaluation for sensitivity and scatter fraction in gamma camera scintigraphy with TlBr pixelated semiconductor detector using various parallel-hole collimator designs, Nuclear Instruments and Methods in Physics Research A, vol. 1048, pp. 167884, 2023. 03. 31.
Seo-Yeong Heo, Byungheon An, Dohyun Kim, Minji Park, Haenghwa Lee, Youngjin Lee, Feasibility study of block-matching and 3D filtering (BM3D) denoising algorithm in multi-material decomposition (MMD) technique for dual-energy computed tomography, Journal of the Korean Physical Society, vol. 82, pp. 305-314, 2023. 02. 28.
Dohwa Lee, Chang-Soo Yun, Seong-Hyeon Kang, Minji Park, Youngjin Lee, Performance evaluation of 3-dimentioanl Median Modified Wiener Filter in T1-weighted magnetic resonance brain image, Nuclear Instruments and Methods in Physics Research A, vol. 1047, pp. 167779, 2023. 02. 28.
Han-Na Kim, Kyuseok Kim, Youngjin Lee, Intra-oral photo analysis for gingivitis screening in orthodontic patients, International Journal of Environmental Research and Public Health, vol. 20, pp. 3075, 2023. 02. 19.
Chanrok Park, Jae-Young Kim, Chang-Hyeon An, Youngjin Lee, Feasibility study of improved median filtering in PET/MR fusion images with parallel imaging using generalized autocalibrating partially parallel acquisition, Nuclear Engineering and Technology, vol. 55, pp. 222-228, 2023. 01. 31.
2022 publications
Youngjin Lee, Chanrok Park, Performance of TlBr semiconductor detector in the gamma camera image using quality control phantoms: Monte Carlo simulation study, Nuclear Engineering and Technology, vol. 54, pp. 4652-4659, 2022. 12. 31.
Ha-Neul Kim, Jae-Hong Jung, Dohwa Lee, Hyun-Seo Jung, Ji-Beom Jeong, Hyun-Woo Jeong, Youngjin Lee, Comparison of jaw mode and field width for left-breast cancer using TomoDirect three-dimensional conformal radiation therapy: a phantom study, Healthcare, vol. 10, pp. 2431, 2022. 12. 02.
Min-Hee Lee, Chang-Soo Yun, Kyuseok Kim, Youngjin Lee, Image restoration algorithm incorporating methods to remove noise and blurring from positron emission tomography imaging for Alzheimer's disease diagnosis, Physica Medica, vol. 103, pp. 181-189, 2022. 11. 30.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Application of fast non-local means denoising approach for general X-ray digital radiography for radiation dose reduction with lung nodule phantom using 3D printing, Iranian Journal of Medical Physics, vol. 19, pp. 363-370, 2022. 10. 31.
Kyuseok Kim, Nuri Chon, Hyun-Woo Jeong, Youngjin Lee, Improvement of Ultrasound Image Quality Using Non-Local Means Noise-Reduction Approach for Precise Quality Control and Accurate Diagnosis of Thyroid Nodules, International Journal of Environmental Research and Public Health, vol. 19, pp. 13743, 2022. 10. 22.
Seong-Hyeon Kang, Minji Park, Myeong Seong Yoon, Youngjin Lee, Quantitative evaluation of total variation noise reduction algorithm in computed tomographic images using 3D-printed customized phantom for femur diagnosis, Journal of the Korean Physical Society, vol. 19, pp. 450-459, 2022. 09. 30.
Minkyoung Kim, Dong-Kyoon Han, Youngjin Lee, Near-field clutter artifact reduction algorithm based on wavelet thresholding method in echocardiography using 3D printed cardiac phantom: an experimental study, Journal of the Korean Physical Society, vol. 81, pp. 441-449, 2022. 09. 30.
Iman Akef Khowailed, Youngjin Lee, Haneul Lee, Assessing the differences in muscle stiffness measured with shear wave elastography and myotonometer during the menstrual cycle in young women, Clinical Physiology and Functional Imaging, vol. 42, pp. 320-326, 2022. 09. 30.
Youngjin Lee, Performance analysis of improved hybrid median filter applied to X-ray computed tomography images obtained with high-resolution photon-counting CZT detector, Nuclear Engineering and Technology, vol. 54, pp. 3380-3389, 2022. 09. 30.
Yongho Do, Youngkwon Cho, Seong-Hyeon Kang, Youngjin Lee, Optimization of block-matching and 3D filtering (BM3D) algorithm in brain single photon emission computed tomography (SPECT) imaging using fan beam collimator: phantom study, Nuclear Engineering and Technology, vol. 54, pp. 3403-3414, 2022. 09. 30.
Bongju Han, Minji Park, Kyuseok Kim, Youngjin Lee, Characterization of Flexible Amorphous Silicon Thin-film Transistor Detector with PIN Diode in Radiography, Diagnostics, vol. 22, pp. 2103, 2022. 08. 30.
Youngjin Lee, Young-Kwon Cho, Ki Chang Lee, Quality evaluation of Ultrasonographic Equipment using an ATS-539 Multipurpose Phantom in Veterinary Medicine, Journal of Veterinary Clinic, vol. 39, pp. 114-120, 2022. 06. 30.
Gaueun Baek, Jihyun Yoon, Jun Lim, Youngjin Lee, Performance evaluation of magnetic resonance imaging based on newly developed MRiLab simulation using inversion recovery pulse sequence with various inversion times, Journal of Magnetics, vol. 27, pp. 210-216, 2022. 06. 30.
Hyunsoo Seo, Wooyoung Kim, Bongju Han, Myeongseong Yoon, Huimin Jang, Youngjin Lee, Usefulness of an Additional Filter Created Using 3D Printing for Whole-Body X-ray Imaging with a Long-Length Detector, Sensors, vol. 22, pp. 4299, 2022. 06. 06.
Chanrok Park, Youngjin Lee, Application feasibility of median modified Wiener filter (MMWF) algorithm for customized breast ACR phantom images using 3D printing technology in mammography, Nuclear Instruments and Methods in Physics Research A, vol. 1031, pp. 166570, 2022. 05. 11.
Jung-Kyun Park, Seong-Hyeon Kang, Minjin Park, Do-Hwa Lee, Kyuseok Kim, Youngjin Lee, Noise level and similarity evaluations of non-local means algorithm in chest digital tomosynthesis X-ray imaging system: an experimental study, Nuclear Instruments and Methods in Physics Research A, vol. 1029, pp. 166404, 2022. 04. 11.
Seungwan Lee, Youngjin Lee, The impact of improved non-local means denoising algorithm on photon-counting X-ray images using various Al additive filtrations, Nuclear Instruments and Methods in Physics Research A, vol. 1027, pp. 166244, 2022. 03. 31.
Min-Hee Lee, Chang-Soo Yun, Kyuseok Kim, Youngjin Lee, Effect of Denoising and Deblurring 18F-Fluorodeoxyglucose Positron Emission Tomography Images on a Deep Learning Model’s Classification Performance for Alzheimer’s Disease, Metabolites, vol. 12, pp. 231, 2022. 03. 07.
Jina Shim, Su Hwan Lee, Youngjin Lee, Kyu Bom Kim, Kyuseok Kim, Metallic component preserving algorithm based on the cerebral computed tomography angiography in aneurysm surgery, Diagnostics, vol. 12, pp. 338, 2022. 01. 28.
Jina Shim, Yong Eun Chung, Hyun-Woo Jeong, Youngjin Lee, Feasibility study of dose modulation for reducing radiation dose with arms-down patient position in abdominal computed tomography, Diagnostics, vol. 12, pp. 323, 2022. 01. 27.
2021 publications
Eun Soo Kim, Youngjin Lee, Chan Rok Park, Feasibility of MMWF noise reduction algorithm in brain SPECT images according to various reconstruction methods: a phantom study, Optik - International Journal for Light and Electron Optics, vol. 247, pp. 167909, 2021. 12. 31.
Youngjin Lee, Improved quality using newly designed algorithms in gamma- and X-ray fusion images with a photon counting CZT detector: combining the median modified Wiener filter and edge detection method, Optik - International Journal for Light and Electron Optics, vol. 245, pp. 167681, 2021. 11. 30.
Jina Shim, Gyoung Min Kim, Do Young Kim, Mi Jin Yun, Soo Hyun Seo, Jong Yun Won, Youngjin Lee, Measuring radiation exposure of operators engaged in the yttrium-90 microsphere radioembolization treatment of hepatocellular carcinoma patients, Optik - International Journal for Light and Electron Optics, vol. 243, pp. 167392, 2021. 10. 31.
Sunguk Ju, Seong-Hyeon Kang, Youngjin Lee, Optimization of mask size for median-modified Wiener filter according to matrix size of computed tomography images, Nuclear Instruments and Methods in Physics Research A, vol. 1010, pp. 165508, 2021. 09. 11.
Seungwan Lee, Youngjin Lee, Performance evaluation of median-modified Wiener filter algorithm in high-resolution complementary metal-oxide-semiconductor X-ray imaging system: an experimental study, Nuclear Instruments and Methods in Physics Research A, vol. 1010, pp. 165509, 2021. 09. 11.
Kyuseok Kim, Youngjin Lee, Application of non-uniformity correction framework in digital breast tomosynthesis by incorporating a total variation penalty, Optik - International Journal for Light and Electron Optics, vol. 240, pp. 166836, 2021. 08. 31.
Kyuseok Kim, Youngjin Lee, Improvement of signal and noise performance using single image super-resolution based on deep learning in single photon emission computed tomography imaging system, Nuclear Engineering and Technology, vol. 53, pp. 2341-2347, 2021. 07. 31.
Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee, Similarity analysis of gamma images based on the pixelated CdTe semiconductor detector system using quadrant bar phantom in nuclear medicine: Monte Carlo simulation study, Nuclear Engineering and Technology, vol. 53, pp. 1947-1954, 2021. 06. 30.
Jun Lim, Seong-Hyeon Kang, Chan Rok Park, Youngjin Lee, Performance evaluation of image characteristics by changing parameters in brain T2 weighted neuroimages using MRiLab simulation, Journal of Magnetics, vol. 26, pp. 41-49, 2021. 03. 31.
Donghyeok Choi, Seong-Hyeon Kang, Chan Rok Park, Youngjin Lee, Study of the Noise Reduction Algorithm with Median Modified Wiener Filter for T2-weighted Magnetic Resonance Brain Images, Journal of Magnetics, vol. 26, pp. 50-59, 2021. 03. 31.
Youngjin Lee, Minkyoung Kim, Haneul Lee, Measurement of stiffness for major muscle with a shear wave elastography and Myoton: quantitative analysis study, Diagnostics, vol. 11, pp. 524, 2021. 03. 15.
Jaeyoung Park, Chang-Ki Kang, Youngjin Lee, Quantitative evaluation and no-reference image quality assessment of fast nonlocal means denoising approach in diffusion-weighted magnetic resonance imaging with high b-value, Journal of the Korean Physical Society, vol. 78, pp. 244-250, 2021. 02. 28.
Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee, Feasibility of total variation noise reduction algorithm according to various MR-based PET images in a simultaneous PET/MR system: A phantom study, Diagnostics, vol. 11, pp. 319, 2021. 02. 16.
Kyuseok Kim, Hyun-Woo Jeong, Youngjin Lee, Performance Evaluation of Dorsal Vein Network of Hand Imaging Using Relative Total Variation-Based Regularization for Smoothing Technique in a Miniaturized Vein Imaging System: A Pilot Study, International Journal of Environmental Research and Public Health, vol. 18, pp. 1548, 2021. 02. 06.
Jina Shim, Myonggeun Yoon, Mi-Jung Lee, Youngjin Lee, Utility of fast non-local means (FNLM) filter for detection of pulmonary nodules in chest CT for pediatric patient, Physica Medica, vol. 81, pp. 52-59, 2021. 01. 31.
2020 publications
Min Young Jang, Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee, Experimental study of fast non local means noise reduction algorithm using the Hoffman 3D brain phantom in nuclear medicine SPECT image, Optik - International Journal for Light and Electron Optics, vol. 224, pp. 165440, 2020. 12. 31.
Kyuseok Kim, Min-Hee Lee, Youngjin Lee, Investigation of a blind-deconvolution framework after noise reduction using a gamma camera in nuclear medicine imaging, Nuclear Engineering and Technology, vol. 52, pp. 2594-2600, 2020. 11. 30.
Hyun Kyung Lee, Dabin Jung, Yeong-Cheol Heo, Youngjin Lee, Feasibility study on carbonated water for Doppler imaging in medical ultrasonic applications, Optik - International Journal for Light and Electron Optics, vol. 222, pp. 165480, 2020. 11. 30.
Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee, Optimization of mask size with median modified Wiener filter algorithm for gamma images using pixelated semiconductor detector: Monte Carlo simulation study, Nuclear Instruments and Methods in Physics Research A, vol. 980, pp. 164472, 2020. 11. 11.
Ji-Youn Kim, Kyuseok Kim, Youngjin Lee, Application of alternating direction method of multipliers-based blind deconvolution with weighted L1-norm regularization in light microscopy images, Microscopy and Microanalysis, vol. 26, pp. 929-937, 2020. 10. 31.
Chan Rok Park, Seong-Hyeon Kang, Youngjin Lee, Median modified Wiener filter for improving the image quality of gamma camera images, Nuclear Engineering and Technology, vol. 52, pp. 2328-2333, 2020. 10. 31.
Bae-Guen Kim, Seong-Hyeon Kang, Chan Rok Park, Hyun-Woo Jeong, Youngjin Lee, Noise Level and Similarity Analysis for Computed Tomographic Thoracic Image with Fast Non-Local Means Denoising Algorithm, Applied Sciences, vol. 10, pp. 7455, 2020. 10. 23.
Yeong-Cheol Heo, Kyuseok Kim, Youngjin Lee, Effectiveness of non-local means noise reduction algorithm in magnetic resonance imaging: a systematic review, Applied Sciences, vol. 10, pp. 7028, 2020. 10. 10.
Youngjin Lee, Seungwan Lee, Geometric dependence of image quality in digital tomosynthesis: Simulations of X-ray source trajectories and scan angles, Nuclear Instruments and Methods in Physics Research A, vol. 969, pp. 163997, 2020. 07. 21.
Hee-Eun Kim, Seong-Hyeon Kang, Kyuseok Kim, Youngjin Lee, Total variation-based noise reduction image processing algorithm for confocal laser scanning microscopy applied to activity assessment of early carious lesions, Applied Sciences, vol. 10, pp. 4090 , 2020. 06. 13.
Haneul Lee, Kyuseok Kim, Youngjin Lee, Development of stiffness measurement program using color mapping in shear wave elastography, Diagnostics, vol. 10, pp. 362 , 2020. 06. 01.
Seong-Hyeon Kang, Myeong-Seong Yoon, Dong-Kyoon Han, Youngjin Lee, Total variation noise reduction algorithm in computed tomography image with custom-built phantom using 3D-printer, Radiation Physics and Chemistry, vol. 170, pp. 108631, 2020. 05. 31.
Youngjin Lee, Seungwan Lee, Effect of unmatched system models on iterative reconstruction in computed tomography: A phantom study, Journal of the Korean Physical Society, vol. 76, pp. 866-873, 2020. 05. 31.
Kyuseok Kim, Jaegu Choi, Youngjin Lee, Effectiveness of non-local means algorithm with an industrial 3 MeV LINAC high-energy X-ray system for nondestructive testing, Sensors, vol. 20, doi:10.3390/s20092634, 2020. 05. 05.
Seoungho Ham, Sujin Kim, Hwanseong Choi, Youngjin Lee, Haneul Lee, Greater muscle stiffness during contraction as measured by shear-wave elastogrphy at Menstruation during the Menstrual Cycle, Tohoku Journal of Experimental Medicine, vol. 250, pp. 207-213, 2020. 04. 30.
Minji Park, Seohyeon Lee, Serin Choi, Soeun Lee, Seonyeong Han, Hyejin Lee, Seong-Hyeon Kang, Youngjin Lee, Deep learning-based noise reduction algorithm using patch group technique in cadmium zinc telluride fusion imaging system: a Monte Carlo simulation study, Optik - International Journal for Light and Electron Optics, vol. 207, pp. 164472, 2020. 04. 30.
Kyuseok Kim, Youngjin Lee, Effects of total variation regularization noise reduction algorithm in improved K-edge log-subtraction X-ray images with photon-counting cadmium telluride detectors, Optik - International Journal for Light and Electron Optics, vol. 206, pp. 164380, 2020. 03. 31.
Tae-Hyung Kim, Heekyung Oh, Kyuseok Kim, Youngjin Lee, Investigating single image super-resolution algorithm with deep learning using convolutional neural network for chest digital tomosynthesis, Optik - International Journal for Light and Electron Optics, vol. 203, pp. 164070, 2020. 02. 29.
Youngjin Lee, Preliminary evaluation of dual-head Compton camera with Si/CZT material for breast cancer detection: Monte Carlo simulation study, Optik - International Journal for Light and Electron Optics, vol. 202, pp. 163519, 2020. 02. 29.
Ji-Youn Kim, Youngjin Lee, Preliminary study of improved median filter using adaptively mask size in light microscopic image, Microscopy, vol. 69, pp. 31-36, 2020. 02. 25.
2019 publications
Joo-Wan Hong, Kyuseok Kim, Youngjin Lee, Performance Evaluation of New Nonlocal Total Variation Noise Reduction Algorithm in Parallel Magnetic Resonance Imaging with Sensitivity Encoding Reconstruction, Journal of Magnetics, vol. 24, pp. 429-436, 2019. 09. 30.
Chan Rok Park, Youngjin Lee, Comparison of PET image quality using simultaneous PET/MR by attenuation correction with various MR pulse sequences, Nuclear Engineering and Technology, vol. 51, pp.1610-1615, 2019. 09. 30.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Evaluation of Gonadal Exposure Dose in Long Bone Plain Radiography for Radiation Protection, Iranian Journal of Medical Physics, vol. 16, pp. 372-376, 2019. 09. 01.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Feasibility of Fast non local means filter in pediatric chest X-ray for increasing of pulmonary nodule detectability with 3D printed lung nodule phantom, Journal of Radiological Protection, vol. 39, pp. 872-889, 2019. 08. 07.
Dong-Kyoon Han, Kyuseok Kim, Youngjin Lee, Development and Application of a Deep Convolutional Neural Network Noise Reduction Algorithm for Diffusion-weighted Magnetic Resonance Imaging, Journal of Magnetics, vol. 24, pp. 223-229, 2019. 06. 30.
Chan Rok Park, Youngjin Lee, Fast non-local means noise reduction algorithm with acceleration function for improvement of image quality in gamma camera system: A phantom study, Nuclear Engineering and Technology, vol. 51, pp. 719-722, 2019. 06. 30.
Seungwan Lee, Heemoon Cho, Youngjin Lee, High-energy industrial 2D X-ray imaging system with effective nonlocal means denoising for nondestructive testing, Nuclear Instruments and Methods in Physics Research A, vol. 925, pp. 212-216, 2019. 05. 31.
Youngjin Lee, Performance evaluation of noise reduction algorithm with median filter using improved thresholding method in pixelated semiconductor gamma camera system: A numerical simulation study, Nuclear Engineering and Technology, vol. 51, pp. 439-443, 2019. 04. 30.
Youngjin Lee, Feasibility Study for Application of Total-Variation-Based Noise-Removal Algorithm with 450-kVp High-Energy Industrial Computed-Tomography Imaging System for Non-destructive Testing, Experimental Techniques, vol. 43, pp. 117-123, 2019. 04. 30.
Won Ho Choi, Hye Ran Choi, Eunsoo Seo, Jeewoo Hwang, Heekyung Oh, Myeong Rae Kim, Su Rin Han, Min Seok Kim, Seong-Hyeon Kang, Youngjin Lee, Feasibility of fast non-local means noise reduction algorithm in magnetic resonance imaging using 1.5 and 3.0 T with diffusion weighted image technique, Optik - International Journal for Light and Electron Optics, vol. 183, pp. 241-246, 2019. 04. 30.
Seungwan Lee, Youngjin Lee, Performance evaluation of total variation (TV) denoising technique for dual energy contrast-enhanced digital mammography (CEDM) with photon counting detector (PCD): Monte Carlo simulation study, Radiation Physics and Chemistry, vol. 156, pp. 94-100, 2019. 03. 31.
Sungtack Lee, Seong Jin Park, Ji Min Jeon, Mi-Hwa Lee, Dae Yeon Ryu, Eunbyeol Lee, Seong-Hyeon Kang, Youngjin Lee, Noise removal in medical mammography images using fast nonlocal means denoising algorithm for early breast cancer detection: a phantom study, Optik - International Journal for Light and Electron Optics, vol. 180, pp. 569-575, 2019. 02. 28.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Quantitative study of fast non-local means-based denoising filter in chest X-ray imaging with lung nodule using three-dimensional printing, Optik - International Journal for Light and Electron Optics, vol. 179, pp. 1180-1188, 2019. 02. 28.
Chan Rok Park, Kyuseok Kim, Youngjin Lee, Development of a bias field-based uniformity correction in magnetic resonance imaging with various standard pulse sequences, Optik - International Journal for Light and Electron Optics, vol. 178, pp. 161-166, 2019. 02. 28.
Hyun Ji Park, Kyung Chul Shin, Soon-Kyu Yoou, Myeongsin Kang, Jae Gon Kim, Dong Jun Sung, Wonjong Yu, Youngjin Lee, Sung Hea Kim, Young Min Bae, Sang Woong Park, Hydrogen peroxide constricts rat arteries by activating Na+-permeable and Ca2+-permeable cation channels, Free Radical Research, vol. 53, pp. 94-103, 2019. 01. 31.
In-Hyung Lee, Dae-Ung Kang, Sung-Wook Shin, Ryun-Gyeong Lee, Jung-Kyun Park, Youngjin Lee, Development of a total variation noise reduction algorithm for chest digital tomosynthesis, Optik - International Journal for Light and Electron Optics, vol. 176, pp. 384-393, 2019. 01. 31.
2018 publications
Youngjin Lee, Performance evaluation of patch group-based denoising algorithm using prior learning stage with K-edge imaging technique in CdTe photon counting spectral X-ray system: A Monte Carlo simulation study, Optik - International Journal for Light and Electron Optics, vol. 174, pp. 173-177, 2018. 12. 31.
Ji Woo Hong, Dae Ho Kim, Seok Won Kim, Seong Hoon Choi, Ga-Eul Lee, Hyun-Kyu Seo, Sang-Hyun Kim, Youngjin Lee, Effectiveness evaluation of self-produced micro- and nanosized tungsten materials for radiation shielding with diagnostic X-ray imaging system, Optik - International Journal for Light and Electron Optics, vol. 172, pp. 760-765, 2018. 11. 30.
Youngjin Lee, X-ray image denoising with fast non-local means (FNLM) approach using acceleration function in CdTe semiconductor photon counting detector (PCD): Monte Carlo simulation study, Optik - International Journal for Light and Electron Optics, vol. 172, pp. 456-461, 2018. 11. 30.
Youngjin Lee, Improved total-variation noise-reduction technique with gradient method using iteration counter and its application in medical diagnostic chest and abdominal X-ray imaging, Optik - International Journal for Light and Electron Optics, vol. 170, pp. 475-483, 2018. 10. 31.
Chan Rok Park, Youngjin Lee, Hyungjin Yang, Attenuation effect of PET images with and without the magnetic resonance breast coil using various MR attenuation correction sequences, Journal of Magnetics, vol. 23, pp. 375-380, 2018. 09. 30.
Heemoon Cho, Youngjin Lee, Preliminary study of total variation noise reduction algorithm with high energy industrial X-ray imaging system in nondestructive testing field, Results in Physics, vol. 10, pp. 348-352, 2018. 09. 30.
Hye Ran Choi, Ryeong Eon Kim, Chang Won Heo, Chae Won Kim, Myung Seok Yoo, Youngjin Lee, Optimization of dose and image quality using self-produced phantom with various diameters in pediatric abdominal CT scan, Optik - International Journal for Light and Electron Optics, vol. 168, pp. 54-60, 2018. 09. 30.
Seong-Hyeon Kang, Minkyoung Kim, Youngjin Lee, The study on reduction for near field clutter (NFC) artifact based on wavelet thresholding method in ultrasound image using Field II program, Optik - International Journal for Light and Electron Optics, vol. 162, pp. 220-227, 2018. 06. 30.
Daehong Kim, Sang Woong Park, Dae Ho Kim, Myung Seok Yoo, Youngjin Lee, Feasibility of sinogram reconstruction based on inpainting method with decomposed sinusoid-like curve (S-curve) using total variation (TV) noise reduction algorithm in computed tomography (CT) imaging system: A simulation study, Optik - International Journal for Light and Electron Optics, vol. 161, pp. 270-277, 2018. 05. 31.
Jina Shim, Myonggeun Yoon, Youngjin Lee, Feasibility of newly designed fast non local means (FNLM)-based noise reduction filter for X-ray imaging: A simulation study, Optik - International Journal for Light and Electron Optics, vol. 160, pp. 124-130, 2018. 05. 31.
Hye Ran Choi, Seong-Hyeon Kang, Seungwan Lee, Dong-Kyoon Han, Youngjin Lee, Comparison of image performance for three compression methods based on digital X-ray system: Phantom study, Optik - International Journal for Light and Electron Optics, vol. 157, pp. 197-202, 2018. 03. 31.
Seong-Hyeon Kang, Ka Yeon Kim, Yoonji Hwang, Ji Woo Hong, So Rim Baek, Chang-Lae Lee, Youngjin Lee, A Monte Carlo simulation study for feasibility of total variation (TV) noise reduction technique using digital mouse whole body (MOBY) phantom image, Optik - International Journal for Light and Electron Optics, vol. 156, pp. 197-203, 2018. 03. 31.
H. J. Kwak, S. J. Lee, Y. Lee, D. H. Lee, Quantitative study of total variation (TV) noise reduction algorithm with chest X-ray imaging, Journal of Instrumentation, vol. 13, pp. T01006, 2018. 01. 24.
2017 publications
Hyun-Soo Jeon, Seong-Bong Cho, Dong-Kyoon Han, Young-Jin Lee, Eun-Bin Chung, Yeong-Cheol Heo, Magnetic susceptibility artifacts by air space in lumbar MRI sagittal fat suppression, Journal of Magnetics, vol. 22, pp. 671-675, 2017. 12. 31.
Seung Hun Kim, Kanghyen Seo, Seong-Hyeon Kang, Seyoung Bae, Hyeng Ju Kwak, Ji Woo Hong, Yooji Hwang, Sung Mo Kang, Hye Ran Choi, Ga Yeon Kim, Youngjin Lee, Study on Feasibility for Artificial Intelligence (AI) Noise Reduction Algorithm with Various Parameters in Pediatric Abdominal Radio-Magnetic Computed Tomography (CT), Journal of Magnetics, vol. 22, pp. 570-578, 2017. 12. 31.
Seungwan Lee, Seong-Hyeon Kang, Yeong-Cheol Heo, Youngjin Lee, Development of image reconstruction algorithm with iterative method using maximum-likelihood expectation-maximization (MLEM) for chest digital tomosynthesis (CDT) X-ray system, Optik - International Journal for Light and Electron Optics, vol. 150, pp. 131-137, 2017. 12. 31.
Hye Ran Choi, Won Ho Choi, Seung Chan Lee, Yun Kyung Ha, Seong Hyeon Kang, Dae Ho Kim, Youngjin Lee, Evaluation of image quality for stent image with different dilution ratio of contrast agent in self-production vessel model on angiographic X-ray computed tomography (CT), Optik - International Journal for Light and Electron Optics, vol. 143, pp. 180-187, 2017. 08. 31.
H. Lee, S. Choi, D. Lee, Y. -s. Kim, H. -S. Park, Y. Lee, C. -W. Seo, H. -J. Kim, Investigation of various reconstruction parameters for algebraic reconstruction technique in a newly developed chest digital tomosynthesis, Journal of Instrumentation, vol. 12, pp. P08016, 2017. 08. 23.
Ho Chul Kim, Hee-Joung Kim, Kyuseok Kim, Min-Hee Lee, Youngjin Lee, Comparison of Image Uniformity with Photon Counting and Conventional Scintillation Single-Photon Emission Computed Tomography System: A Monte Carlo Simulation Study, Nuclear Engineering and Technology, vol. 49, pp. 776-780, 2017. 06. 22.
Seung Hun Kim, Kanghyen Seo, Seong Hyeon Kang, Jong Hun Kim, Won Ho Choi, Youngjin Lee, Feasibility Study of Improved Patch Group Prior Based Denoising (PGPD) Technique with Medical Ultrasound Imaging System, Journal of Magnetics, vol. 22, pp. 55-59, 2017. 03. 31.
Youngjin Lee, Seungwan Lee, Sooncheol Kang, Jisoo Eom, Dose optimization for dual-energy contrast-enhanced digital mammography based on an energy-resolved photon-counting detector: A Monte Carlo simulation study, Radiation Physics and Chemistry, vol. 132, pp. 46-51, 2017. 03. 01.
2016 publications
Hyun-Woo Jeong, Jong Seok Kim, Se Young Bae, Kanghyen Seo, Seung Hun Kim, Seong Hyeon Kang, Dong Jin Shin, Chang-Lae Lee, Kyuseok Kim, Youngjin Lee, A Numerical Study of Different Types of Collimators for a High-Resolution Preclinical CdTe Pixelated Semiconductor SPECT System, Journal of the Optical Society of Korea, vol. 20, pp. 663-668, 2016. 12. 31.
Kanghyen Seo, Seung Hun Kim, Seong Hyeon Kang, Jongwoon Park, Chang Lae Lee, Youngjin Lee, The Effects of Total Variation (TV) Technique for Noise Reduction in Radio-Magnetic X-ray Image: Quantitative Study, Journal of Magnetics, vol. 21, pp. 593-598, 2016. 12. 31.
Min-Hee Lee, Youngjin Lee, Yoon Ho Hwang, Areum Min, Bong Soo Han, Dong Youn Kim, Impact of sleep restriction on the structural brain network, NeuroReport, vol. 27, pp. 1299-1304, 2016. 12. 14.
Dong-Kyoon Han, Byungdu Jo, Min-Hee Lee, Myung Seok Yoo, Kyuseok Kim, Youngjin Lee, Feasibility study of cone-beam computed tomography (CBCT) reconstruction algorithm for proton image-guided radiation therapy (IGRT), Optik - International Journal for Light and Electron Optics, vol. 127, pp. 9691-9694, 2016. 10. 01.
Seungwan Lee, Youngjin Lee, Feasibility of gamma camera system with CdWO4 detector for quantitation of yttrium-90 bremsstrahlung imaging: Monte Carlo simulation study, Optik - International Journal for Light and Electron Optics, vol. 127, pp. 11807-11815, 2016. 12. 01.
Youngjin Lee, Amy Candy Lee, Hee-Joung Kim, A Monte Carlo simulation study of an improved K-edge log-subtraction X-ray imaging using a photon counting CdTe detector, Nuclear Instruments and Methods in Physics Research A, vol. 830, pp. 381-390, 2016. 09. 11.
Seungwan Lee, Hee-Joung Kim, Se Young Bae, Youngjin Lee, Experimental Study of an Easily Controlled Ultra-High-Resolution Pixel-Matched Parallel-Hole Collimator with a Small Cadmium Zinc Telluride Pixelated Gamma Camera System, Journal of Medical Imaging and Radiation Sciences, vol. 47, pp. 276-282, 2016. 09. 01.
Youngjin Lee, Min Hyeok Choi, Hee Jin Goh, Dong-Kyoon Han, Comparison Study of Image Performance with Contrast Agent Contents for Brain Magnetic Resonance Imaging, Journal of Magnetics, vol. 21, pp. 281-285, 2016. 06. 30.
Youngjin Lee, Seungwan Lee, Hee-Joung Kim, Comparison of spectral CT imaging methods based a photon-counting detector: Experimental study, Nuclear Instruments and Methods in Physics Research A, vol. 815, pp. 68-74, 2016. 04. 11.
Min-Hee Lee, Woo-Ho Shin, Hyunho Lee, Kyuseok Kim, Myung Seok Yoo, Min Kyung Kim, Sunghoon Choi, Byungdu Jo, Youngjin Lee, Feasibility Study of Pixel-Matched Parallel-Hole Collimator with a Pixelated Lutetium-Yttrium Oxyorthosilicate Pre-Clinical Gamma Camera System, Journal of Medical Imaging and Health Informatics, vol. 5, pp. 1-4, 2016. 03. 31.
2015 publications
Y. Lee, S. Lee, Preliminary study on a chest digital tomosynthesis: development and evaluation, Journal of Instrumentation, vol. 10, pp. P10035, 2015. 10. 23.
Y. Lee, W. Kang, Performance evaluation of a small CZT semiconductor gamma camera system with newly designed stack-up parallel-hole collimator, Nuclear Instruments and Methods in Physics Research A, vol. 794, pp. 54-61, 2015. 09. 11.
Youngjin Lee, Hee-Joung Kim, Performance evaluation of high-resolution square parallel-hole collimators with a CZT room temperature pixelated semiconductor SPECT system: a Monte Carlo simulation study, Journal of Instrumentation, vol. 10, pp. T07004, 2015. 07. 27.
2014 publications
Young-Jin Lee, Hee-Joung Kim, Comparison of a newly-designed stack-up collimator with conventional parallel-hole collimators in pre-clinical CZT gamma camera systems: a Monte Carlo simulation study, Journal of the Korean Physical Society, vol. 65, pp. 1149-1158, 2014. 10. 23.
Byung-Du Jo, Young-Jin Lee, Dae-Hong Kim, Hee-Joung Kim, Scatter correction using a primary modulator for dual energy digital radiography: a Monte Carlo simulation study, Journal of the Korean Physical Society, vol. 65, pp. 541-552, 2014. 09. 13.
S.-J. Park, A. R. Yu, Y.-J. Lee, Y.-s. Kim, H.-J. Kim, Feasibility of a CdTe-based SPECT for High-resolution Low-dose Small Animal Imaging: A Monte Carlo Simulation Study, Journal of Instrumentation, vol. 9, pp. T07001, 2014. 07. 01.
Young-Jin Lee, Dae-Hong Kim, Yong-Chun Rhee, Hee-Joung Kim, Monte Carlo simulation study of a novel parallel-hole collimator with a CdTe pixelated semiconductor SPECT system, Journal of the Korean Physical Society, vol. 64, pp. 1737-1744, 2014. 06. 21.
Y.-J. Lee, S.-J. Park, D.-H. Kim, H.-J. Kim, Optimization of the SPECT systems based on a CdTe pixelated semiconductor detector using novel parallel-hole collimators, Journal of Instrumentation, vol. 9, pp. C05057, 2014. 05. 28.
Young-Jin Lee, Dae-Hong Kim, Hee-Joung Kim, The effect of high-resolution parallel-hole collimator materials with a pixelated semiconductor SPECT system at equivalent sensitivities: Monte Carlo simulation studies, Journal of the Korean Physical Society, vol. 64, pp. 1055-1062, 2014. 04. 23.
P.-H. Jeon, C.-L. Lee, D.-H. Kim, Y.-J. Lee, S.-S. Jeon, H.-J. Kim, Dose reduction and image quality optimizations in CT of pediatric and adult patients: phantom studies, Journal of Instrumentation, vol. 9, pp. P03013, 2014. 03. 25.
2013 publications
D.-H. Kim, Y.-J. Lee, P.-H. Jeon, B.-D. Jo, H.-J. Kim, Optimal contrast enhancement achieved by the synthetic method for bone and tissue separation based on a dual-energy radiographic system, Journal of Instrumentation, vol. 8, pp. P07009, 2013. 07. 23.
Young-Jin Lee, Su-Jin Park, Seung-Wan Lee, Dae-Hong Kim, Ye-Seul Kim, Hee-Joung Kim, Comparison of ultra-high-resolution parallel hole collimator materials based on the CdTe pixelated semiconductor SPECT system, Nuclear Instruments and Methods in Physics Research A, vol. 713, pp. 33-39, 2013. 06. 30.
H-M Cho, H-J Kim, Y-N Choi, S-W Lee, H-J Ryu, Y-J Lee, The effects of photon flux on energy spectra and imaging characteristics in a photon-counting x-ray detector, Physics in Medicine and Biology, vol. 58, pp. 4865-4879, 2013. 06. 21.
Young-Jin Lee, Hyun-Ju Ryu, Seung-Wan Lee, Su-Jin Park, Hee-Joung Kim, Comparison of photon counting and conventional scintillation detectors in pinhole SPECT system for small animal imaging: Monte Carlo simulation studies, Journal of the Korean Physical Society, vol. 62, pp. 1317-1322, 2013. 05. 23.
Y.-J. Lee, S.-J. Park, S.-W. Lee, D.-H. Kim, Y.-S. Kim, B.-D. Jo, H.-J. Kim, A Monte Carlo simulation study of the feasibility of a high resolution parallel-hole collimator with a CdTe pixelated semiconductor SPECT system, Journal of Instrumentation, vol. 8, pp. T03009, 2013. 03. 28.
Y.-J. Lee, H.-J. Ryu, H.-M. Cho, S.-W. Lee, Y.-N. Choi, H.-J. Kim, Optimization of an ultra-high-resolution parallel-hole collimator for CdTe semiconductor SPECT system, Journal of Instrumentation, vol. 8, pp. C01044, 2013. 01. 25.
2012 publications
Hyo-Min Cho, Yu-Na Choi, Seung-Wan Lee, Young-Jin Lee, Hyun-Ju Ryu, Hee-Joung Kim, Optimization of a photon rejecter to separate electronic noise in a photon-counting detector, Journal of the Korean Physical Society, vol. 61, pp. 1840-1845, 2012. 12. 18.
Seung-Wan Lee, Yu-Na Choi, Hyo-Min Cho, Young-Jin Lee, Hyun-Ju Ryu and Hee-Joung Kim, A Monte Carlo simulation study of the effect of energy windows in computed tomography images based on an energy-resolved photon counting detector, Physics in Medicine and Biology, vol. 57, pp. 4931-4949, 2012. 07. 17.
Hyun-Ju Ryu, Young-Jin Lee, Seung-Wan Lee, Hyo-Min Cho, Yu-Na Choi, Hee-Joung Kim, Design of a high resolution small animal SPECT system sharing a CdTe semiconductor, Journal of the Korean Physical Society, vol. 61, pp. 130-134, 2012. 07. 11.
Young-Jin Lee, Hyun-Ju Ryu, Hyo-Min Cho, Seung-Wan Lee, Yu-Na Choi, Hee-Joung Kim, Optimization of a high-resolution collimator for a CdTe detector: Monte Carlo simulation studies, Journal of the Korean Physical Society, vol. 60, pp. 862-868, 2012. 03. 07.
2011 publications
Yu-Na Choi, Seung-Wan Lee, Hyo-Min Cho, Hyun-Ju Ryu, Young-Jin Lee, Hee-Joung Kim, The effect of photon energy weighting on X-ray imaging based on a photon counting detector, Journal of the Korean Physical Society, vol. 59, pp. 3114-3119, 2011. 11. 30.
Seung-Wan Lee, Yu-Na Choi, Hyo-Min Cho, Young-Jin Lee, Hyun-Ju Ryu, Hee-Joung Kim, Feasibility of photon-counting K-edge imaging in x-ray and computed tomographic systems: Monte Carlo simulation studies, Journal of the Korean Physical Society, vol. 59, pp. 2833-2839, 2011. 10. 31.
Yu-Na Choi, Hyo-Min Cho, Seung-Wan Lee, Hyun-Ju Ryu, Young-Jin Lee, Hee-Joung Kim, Material decomposition in contrast-enhanced digital mammography based on photon counting: Monte Carlo simulation studies, Journal of the Korean Physical Society, vol. 59, pp. 161-168, 2011. 07. 31.
In progress
Da-Bin Park, Jin-Ah Lee, Ji-Heon Han, Seong-Hyeon Kang, Youngjin Lee, U-Net model for motion artifact reduction in computed tomographic images: A simulation study, Journal of Radiological Science and Technology, under review.
Minji Kim, Chaeyeon An, Dohee Kim, Yeyoung Lee, Hajin Kim, Youngjin Lee, Optimization of Median Modified Wiener Filter Algorithm for Noise Reduction in PET/CT Imaging for Early Lung Cancer Diagnosis, Journal of the Korean Society of Radiology, under review.
2025 publications
Jangwon Moon, Seong-Hyeon Kang, Hajin Kim, Youngjin Lee, Low-dose Abdominal CT Image Noise Reduction Using Residual-Based Median Adaptive Gaussian Filtering Algorithms: Performance Evaluation and Optimization, Journal of Radiological Science and Technology, accepted.
Jae-Hong Jung, Kyung-Bae Lee, Daegun Kim, Youngjin Lee, Performance Comparison of Knowledge Sources Types and Embedding Models in a RAG-based Educational Chatbots for Radiation Therapy, Journal of Radiological Science and Technology, vol. 48, pp. 405-416, 2025. 08. 31.
Jae-Hong Jung, Daegun Kim, Youngjin Lee, Kyung-Bae Lee, Development of a YOLO-based Object Detection System for Prior Identification of Immobilization Devices in Radiation Therapy Simulation, Journal of Radiological Science and Technology, vol. 48, pp. 279-291, 2025. 06. 30.
Dae-Gun Kim, Jae-Hong Jung, Kyung-Bae Lee, Youngjin Lee, Analysis of Learning Effects of Radiological Science Students Based on Clinical Practicum Environment in Radiation Therapy, Journal of Radiological Science and Technology, vol. 48, pp. 223-231, 2025. 06. 30.
Kyeongsoo Jeon, Jiwon Song, Jiwon Hur, Chaeeon Lee, Kang-Hyeon Seo, Youngjin Lee, Usefulness Evaluation of Laplacian Filter and Fast Non-Local Means Algorithm in Coronary Angiographic Images, Journal of Radiological Science and Technology, vol. 48, pp. 93-103, 2025. 02. 28.
2024 publications
Bo-Min Park, Yoo-Jin Seo, Seong-Hyeon Kang, Jina Shim, Hajin Kim, Sewon Lim, Youngjin Lee, Evaluation of Performance and No-reference-based Quality for CT Image with ADMIRE Iterative Reconstruction Parameters: A Pilot Study, Journal of Radiological Science and Technology, vol. 47, pp. 175-182, 2024. 06. 30.
Ha-Seon Jeong, Ie-Jun Kim, Su-Bin Park, Suyeon Park, Yunji Oh, Woo-Seok Lee, Kang-Hyeon Seo, Youngjin Lee, Optimization of Non-Local Means Algorithm in Low-Dose Computed Tomographic Image Based on Noise Level and Similarity Evaluations, Journal of Radiological Science and Technology, vol. 47, pp. 39-48, 2024. 02. 29.
2023 publications
Seong-Hyeon Kang, Youngjin Lee, Optimization of the number of iterations of total variation algorithm according to Rician noise level of magnetic resonance images, Journal of Korean Society of MR Technology, vol. 33, pp. 13-21, 2023. 12. 31.
Hajin Kim, Youngjin Lee, Comparative evaluation of filters for speckle noise reduction in clinical liver ultrasound image, Journal of Radiological Science and Technology, vol. 46, pp. 475-484, 2023. 12. 31.
Seung Yeon Kim, Soo Min Kang, Youngjin Lee, Usefulness of Median Modified Wiener Filter Algorithm for Noise Reduction in Liver Cirrhosis Ultrasound Image, Journal of the Korean Society of Radiology, vol. 17, pp. 911-917, 2023. 11. 30.
Hyun-Woo Jeong, Youngjin Lee, Application feasibility study of non-local means algorithm in a miniaturized vein near-infrared imaging system, Journal of the Korean Society of Radiology, vol. 17, pp. 679-684, 2023. 10. 31.
Sewon Lim, Youngjin Lee, Substitutability of noise reduction algorithm based conventional thresholding technique to U-Net model for pancreas segmentation, Journal of the Korean Society of Radiology, vol. 17, pp. 663-670, 2023. 10. 31.
Youngjin Lee, Simulation and experimental studies of super resolution convolutional neural network algorithm in ultrasound image, Journal of the Korean Society of Radiology, vol. 17, pp. 693-699, 2023. 10. 31.
Kyuseok Kim, Youngjin Lee, A Systematic Review of Trends for Image Quality Improvement in Light Microscopy, Journal of Radiological Science and Technology, vol. 46, pp. 207-217, 2023. 06. 30.
2022 publications
Minji Park, Seong-Hyeon Kang, Youngjin Lee, The study on the optimization of noise power spectrum density of block-matching and 3D filtering algorithm in simulated magnetic resonance image using MRiLab, Journal of Korean Society of MR Technology, vol. 32, pp. 35-44, 2022. 09. 30.
Jina Shim, Seong-Hyeon Kang, Youngjin Lee, Evaluation of Noise Level and Blind Quality in CT Images using Advanced Modeled Iterative Reconstruction (ADMIRE), Journal of the Korean Society of Radiology, vol. 16, pp. 203-209, 2022. 06. 30.
Chanrok Park, Youngjin Lee, Evaluation of PET image quality based on the UTE MR pulse sequence according to injected material in MR/PET phantom, Journal of Korean Society of MR Technology, vol. 32, pp. 47-53, 2022. 06. 30.
2021 publications
Woo-Young Kim, Hyun-Soo Seo, Bong-Ju Han, Myeong-Seong Yoon, Youngjin Lee, A Study on the Usefulness of Copper Filters Made with 3D Printers in Longbone Examination Using Long Length Detector, Journal of Radiological Science and Technology, vol. 44, pp. 607-613, 2021. 12. 31.
Dohwa Lee, Minji Park, Seong-Hyeon Kang, Youngjin Lee, Analysis of Signal and Noise Characteristics of Brain T2-Weighted Image with Gradient-Echo Pulse Sequence by Changing Echo Time Based on MRiLab Simulation: Pilot Study, Journal of Korean Society of MR Technology, vol. 31, pp. 49-56, 2021. 12. 31.
Inki Hong, Minji Park, Seong-Hyeon Kang, Youngjin Lee, Noise level evaluation according to slice thickness change in magnetic resonance T2 weighted image of multiple sclerosis disease, Journal of Radiological Science and Technology, vol. 44, pp. 327-333, 2021. 08. 31.
Jina Shim, Youngjin Lee, Evaluation of Distortion in Measuring the Stability of Distal Radio-ulnar Joint in Wrist PA-Grip View, Journal of the Korean Society of Radiology, vol. 15, pp. 321-327, 2021. 06. 30.
Jina Shim, Youngjin Lee, Comparison of CT image performance with or without tin filter based on blind image quality evaluation method, Journal of the Korean Society of Radiology, vol. 15, pp. 301-306, 2021. 06. 30.
Young Hyun Cho, Se Jeong Lee, Youngjin Lee, Chan Rok Park, Efficiency of Median Modified Wiener Filter Algorithm for Noise Reduction in PET/MR Images: A Phantom Study, Journal of Radiological Science and Technology, vol. 44, pp. 225-229, 2021. 06. 30.
Jina Shim, Youngjin Lee, Investigation of Tube Voltage Range using Dose Comparison based on Effective Detector Exposure Index in Chest Radiography, Journal of the Korean Society of Radiology, vol. 15, pp. 139-145, 2021. 04. 30.
Jina Shim, Youngjin Lee, Correlation Analysis of between Patient and Equipment Factors and Radiation Dose in Chest Low Dose and Abdominal Non-contrast CT, Journal of the Korean Society of Radiology, vol. 15, pp. 117-123, 2021. 04. 30.
Sunguk Ju, Byungheon An, Seong-Hyeon Kang, Youngjin Lee, Median modified Wiener filter for noise reduction in computed tomographic image using simulated male adult human phantom, Journal of the Korean Society of Radiology, vol. 15, pp. 21-28, 2021. 02. 28.
Nam Young Kim, Ju Hui Kim, Jun Lim, Seong-Hyeon Kang, Youngjin Lee, Evaluation of Tendency for Characteristics of MRI Brain T2 Weighted Images according to Changing NEX: MRiLab Simulation Study, Journal of the Korean Society of Radiology, vol. 15, pp. 9-14, 2021. 02. 28.
2019 publications
Taeil Park, Sujong Jang, Youngjin Lee, Application of Total Variation Algorithm in X-ray Phantom Image with Various Added Filter Thickness : GATE Simulation Study, Journal of the Korean Society of Radiology, vol. 13, pp. 773-778, 2019. 10. 31.
Sung-Woo Park, Jong-In Lee, Youngjin Lee, A Study on Feasibility of Total Variation Algorithm in Skull Image using Various X-ray Exposure Parameters, Journal of the Korean Society of Radiology, vol. 13, pp. 765-771, 2019. 10. 31.
Youngjin Lee, Ji-Youn Kim, Feasibility Study of Non Local Means Noise Reduction Algorithm with Improved Time Resolution in Light Microscopic Image, Journal of the Korean Society of Radiology, vol. 13, pp. 623-628, 2019. 08. 31.
Donghyeok Choi, Jinhong Kim, Jongho Choi, Seong-Hyeon Kang, Youngjin Lee, Image Optimization of Fast Non Local Means Noise Reduction Algorithm using Various Filtering Factors with Human Anthropomorphic Phantom : a Simulation Study, Journal of the Korean Society of Radiology, vol. 13, pp. 453-458, 2019. 06. 30.
Minju Oh, Joo-Wan Hong, Youngjin Lee, Comparison Evaluation of Image Quality with Different Thickness of Aluminum added Filter using GATE Simulation in Digital Radiography, Journal of the Korean Society of Radiology, vol. 13, pp. 81-86, 2019. 02. 28.