Geng-Shi Jeng

Geng-Shi Jeng (鄭耿璽)

Associate Professor, Institute of Electronics, National Yang Ming Chiao Tung University. 2021/8-present

Assistant Professor, Institute of Electronics, National Yang Ming Chiao Tung University. 2020/2-2021/7

EDUCATION

National Taiwan University

Ph.D., Graduate Institute of Communication Engineering, Dept. of Electrical Engineering

National Taiwan University

M.S., Dept. of Electrical Engineering        

National Chiao Tung University

B.S., Dept. of Electronics Engineering

WORK EXPERIENCE 

Visiting Scientist, Bioengineering, University of Washington, Seattle. 2017-2019

Chief Technology Officer, S-Sharp. 2011-2017

Director, Coretronic Display Solution Corporation. 2009-2011

Engineer, Industrial Technology Research Institute (ITRI). 2006-2009

HONORS & AWARDS

21st National Innovation Award, 2024

Honorable Mention Award, SEMBA 2022, Taiwan

Best Paper Award, TSBME 2021 & ISET 2021, Taiwan.

Cum Laude Poster Award, 2005 Proceeding of SPIE Medical Imaging, San Diego, CA.

SPECIALIZATION & SKILLS

Medical ultrasound systems (beamforming, signal processing, and circuits)

Signal processing

Biomedical circuit design

Medical imaging systems

Parallel computing on medical imaging

PUBLICATION

Journal paper

1. B.-Y. Hsieh, M.-H. Lin, C.-Y. Lu, P.-S. Chen, Y.-C. J. Kao, W.-H. Chan, S.-Y. Chu, and G.-S. Jeng*, “Confidence-enhanced flow trajectory imaging using speckle tracking with multi-angle plane waves,” Ultrasonics, accepted for publication.

2. G.-S. Jeng*, S. Chen, L.-T. Hsieh, and M.-T. Lo, “Contactless respiratory waveform estimation using ultrasound planar array,” IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control, vol. 5, pp. 23–32, March. 2025.

3. G.-S. Jeng*, P.-S. Chen, M.-Y. Hsieh, Z. Liu, J. Langdon, S. Ahn, L. H. Staib, et al., “Coordinate-Independent 3-D Ultrasound Principal Stretch and Direction Imaging,” IEEE Trans. on Biomedical Engineering, vol. 71, pp. 3312 – 3323, Nov 2024. (Front cover in November)

4. K.-C. Huang, D. S.-H. Lin, G.-S. Jeng, T.-T. Lin, L.-Y. Lin, C.-K. Lee, and L.-C. Lin, "Left Ventricular Segmentation, Warping, and Myocardial Registration for Automated Strain Measurement," Journal of Imaging Informatics in Medicine, vol.37, pp. 2274–2286, 2024.

5. G.-S. Jeng, C.-L. Yeh, C.-L. Lee, Y.-S. Yang, L.-Y. Tseng and P.-C. Li, “Ultrasound Shear-Wave Computed Tomography for Elasticity Imaging,” Applied Physics Letters, 121, 043702, Jul., 2022.

6. G.-S. Jeng, Y.-A. Wang, P.-Y Liu, and P.-C. Li, “Laser-generated leaky acoustic wave imaging for interventional guidewire guidance,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control. vol. 68, pp. 2496 – 2506, Jul., 2021.

7. A. Lu, S. S. Ahn, K. Ta, N. Parajuli, J. C. Stendahl, Z. Liu, N. E. Boutagy, G.-S. Jeng, L. H. Staib, M. O’Donnell, A. J. Sinusas, and J. S. Duncan, “Learning-based Regularization for Cardiac Strain Analysis via Domain Adaptation,” IEEE Trans. Med. Imag., vol. 40, pp. 2233 – 2245, Sep., 2021.

8. G.-S. Jeng, M.-L. Li, M. Kim, S.J. Yoon, J.J. Pitre, D.S. Li, I. Pelivanov, and M. O’Donnell, " Real-time interleaved spectroscopic photoacoustic and ultrasound (PAUS) scanning with simultaneous fluence compensation and motion correction," Nature Communications, 12(1), 716, 2021.

9. D. S. Li, G.-S. Jeng, J, J. Pitre Jr., M. Kim, L. D. Pozzo, and M. O’Donnell, "Spatially localized sono-photoacoustic activation of phase-change contrast agents," Photoacoustics, vol. 20, 100202, Dec., 2020.

10. M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell,” Deep-learning image reconstruction for real-time photoacoustic system,” IEEE Trans. Med. Imag. vol. 39, pp. 3379-3390, Nov., 2020.

11. M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell,” Correction of wavelength-dependent laser fluence in swept-beam spectroscopic photoacoustic imaging with a hand-held probe,” Photoacoustics, vol. 19, 100192, Sep., 2020.

12. Y.-T Lee, D. S. Li, J. Ilavsky, I. Kuzmenko, G.-S. Jeng, M. O'Donnell, and L. D. Pozzo. "Ultrasound-based formation of nano-Pickering emulsions investigated via in-situ SAXS." Journal of colloid and interface science 536, pp. 281-290, 2019.

13. N. Parajuli, A. Lu, K. Ta, J. Stendahl, N. Boutagy, I. Alkhalil, M. Eberle, G.-S. Jeng, M. Zontak, M. O’Donnell, A. J. Sinusas, “Flow network tracking for spatiotemporal and periodic point matching: applied to cardiac motion analysis,” Medical Image Analysis, Vol. 55, pp. 116-135, Jul., 2019.

14. G.-S. Jeng, M. Zontak, N.  Parajuli, A. Lu, K. Ta, A. J. Sinusas, J. S. Duncan, and M. O’Donnell, “Efficient two-pass 3-D speckle tracking for ultrasound imaging,” IEEE Access, Vol. 6, pp. 17415-17428, Mar., 2018.

15. C. C. Shen, Y. Q. Xing, and G. Jeng, “Autocorrelation-based generalized coherence factor for low-complexity adaptive beamforming,” Ultrasonics, 72, pp.177-183, 2016.

16. E. Merčep, G. Jeng, S. Morscher, P.-C. Li, and D. Razansky, “Hybrid optoacoustic tomography and pulse-echo ultrasonography using concave arrays,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 62, No. 9, pp. 1651-1661, Sep., 2015.

17. J.-H. Liu, G.-S. Jeng, T.-K. Wu, and P.-C. Li, “ECG gating and triggering technologies for ultrasonic small animal imaging,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 53, No. 9, pp. 1590-1596, Sep., 2006.

18. G.-S. Jeng and P.-C. Li, “Vector-velocity estimation in swept-scan using a k-space approach,” IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 53, No. 5, pp. 947-958, May, 2006.

19. G.-S. Jeng and P.-C. Li, “Effects of swept scanning on velocity estimation,” Ultrasonic Imaging, Vol. 27, No.1, pp.1-20, Jan., 2005.

Conference paper

1. S.-K. Lu, C.-Y. Lu, G.-S. Jeng, “Wall and Flow Tracking for Simultaneous Blood Pressure and Volume Flow Rate Measurement,” 2024 IEEE UFFC-JS, Taipei, Taiwan, 22-26 Sep., 2024.

2. Y.-F. Chiang and G.-S. Jeng, “Optimizing Sound Quality with a Compact Linear-Amplifier-Based Parametric Speaker: Harmonics Reduction and Bass Enhancement,” 2024 IEEE UFFC-JS, Taipei, Taiwan, 22-26 Sep., 2024.

3. C.-Y. Chen, T.-H. Sang, and G.-S. Jeng, “Deep-Learning Imaging Enhancement of Amplitude Steered Array Beamforming,” 2024 IEEE UFFC-JS, Taipei, Taiwan, 22-26 Sep., 2024.

4. G.-S. Jeng, P.-S. Chen, J.-Z. Li, B.-C. Shih, and W.-C. Tian, “Real-Time Edge Computing Empowered Airborne Ultrasound Imaging System with Cost-Effective Single Chip Integration,” 2024 IEEE UFFC-JS, Taipei, Taiwan, 22-26 Sep., 2024.

5. C.-W. Liao, Y.-T. Liu, and G.-S. Jeng, “Direct Ultrasound Cardiac Strain Imaging via Optical Flow Deep Learning,” 2024 IEEE UFFC-JS, Taipei, Taiwan, 22-26 Sep., 2024.

6. G.-S. Jeng, S. Chen, and L.-T. Hsieh, “Contactless Respiratory Waveform Estimation Using Acoustic Planar Array,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, 3-8 Sep., 2023.

7. P.-S Chen, M.-Y. Hsieh, M. de Villiers, and G.-S. Jeng, “Coordinate-Independent Myocardial Strain Imaging Using 3D Ultrasound Principal Stretch and Axis Estimation,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, 3-8 Sep., 2023.

8. L.-F. Lee, P.-S Chen, and G.-S. Jeng, “Enhancing 3D Speckle Tracking with High-Speed Phase-Sensitive Randomized Search,” 2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, 3-8 Sep., 2023.

9. G.-S. Jeng, M.-H. Lin, and P.-S. Chen, “Vector Flow Imaging Using Speckle-tracking-based Correlation-weighted Least Squares,” 2022 IEEE International Ultrasonics Symposium (IUS), Venice, Italy, 10-13 Oct., 2022.

10. G.-S. Jeng, C.-L. Yeh, L.-Y. Tseng, and P.-C. Li, “Imaging Optimization on Ultrasound Shear Wave Computed Tomography,” 2022 IEEE International Ultrasonics Symposium (IUS), Venice, Italy, 10-13 Oct., 2022.

11. Z. A. Coutant, O. Adelegan, A. O. Biliroglu, G.-S. Jeng, et al.,”Wideband Air-Coupled CMUT Arrays for Acoustic Micro-Tapping,” 2020 IEEE International Ultrasonics Symposium, Las Vegas, USA, 6-11 Sep., pp. 1-3, 2020.

12. G.-S. Jeng et al, “Real-Time, Swept-Beam Spectroscopic Photoacoustic/Ultrasound Imaging -Pre-Clinical System,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, 6-9 Oct., 2019. (Oral Presentation)

13. D. S. Li, J. J. Pitre, G.-S. Jeng, I. Pelivanov, T. Matula, M. O’Donnell, and L. D. Pozzo, “Sono-Photoacoustic Activation of Polypyrrole Coated Nanodroplets for Thrombolysis,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, 6-9 Oct., 2019. (Oral Presentation)

14. C.-Y. Chien, G.-S. Jeng, D. S. Li, and M. O’Donnell “Parameters Affecting the Accuracy of Pulse Wave Velocity Estimates: A Comprehensive Comparison between Different Imaging Methods,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, 6-9 Oct., 2019. (Poster Presentation)

15. M. Kim, G.-S. Jeng, I. Pelivanov, and M. O'Donnell, “Deep Learning Image Reconstruction for Real-Time Photoacoustic System,” 2019 IEEE International Ultrasonics Symposium, Glasgow, Scotland, 6-9 Oct., 2019. (Poster Presentation)

16. G.-S. Jeng et al, “Real-time, swept-beam compact photoacoustic/ultrasound imaging system,”　SPIE Photonics West BIOS 2019, California, 2-7 Feb., 2019. (Oral Presentation)

17. G.-S. Jeng et al, “3-D Speckle Tracking with Two-Pass Searching and Phase-Rotated Correlation Filtering,”　2018 IEEE International Ultrasonics Symposium, Kobe, Japan, 22-25 Oct., 2018. (Oral Presentation)

18. C.-C. Shen, H.-C. Yang, G. Jeng, “Sound speed optimization for ultrasound beamforming using differential phase gradient between sub-apertures,” 2016 IEEE International Ultrasonics Symposium, Tours, France, 18-21 Sep., pp.1-4, 2016.

19. C.-C. Shen, J.-G. Yul, G. Jeng, “Implementation and evaluation of slow-time Golay decoding for pre-clinical high-frequency color Doppler imaging in mice,”　2015 IEEE International Ultrasonics Symposium, Taipei, Taiwan, 21-24 Oct., pp.1-4, 2015.

20. Y.-Q. Xing, S.-H. Jiang, G. Jeng, C.-C. Shen,” Low-complexity adaptive beamforming using autocorrelation-based generalized coherence factor,” 2015 IEEE International Ultrasonics Symposium, Taipei, Taiwan, 21-24, Oct., pp.1-4, 2015.

21. C.-L. Hu, G.-S. Jeng, Y.-H. Wang, P.-C. Li, M.-L. Li, “Improved plane-wave high frame rate imaging using retrospective transmit focusing and filter-derived coherence-index weighting,” 2010 IEEE International Ultrasonics Symposium, San Diego, California, 2010, pp. 1916-1919. 2013 World Molecular Imaging Congress (WMIC 2013)2013 World Molecular Imaging Congress (WMIC 201

22. C.-L. Hu, G.-S. Jeng, Y.-H. Wang, P.-C. Li and M.-L. Li, “Improved Plane-wave High Frame Rate Imaging Using Filter-based Retrospective Focusing and Coherent Weighting”, Symposium of Annual Conference of the Biomedical Engineering Society, Kaohsiung, Taiwan, R.O.C., December 10-11, 2010. 

23. G.-S. Jeng and P.-C. Li, “Error Analysis of Autocorrelation-Based Velocity Vector in the Aperture Domain,” in Proc. IEEE Ultrason. Symp., 2007, pp. 2421-2424.

24. G.-S. Jeng and P.-C. Li, “Vector velocity estimation in swept-scan mode using a K-space approach,” Proc. of SPIE, Medical Imaging 2005, vol. 5750, pp. 468–477, 2005. (Cum Laude Award)

25. J.-H.  Liu, G.-S. Jeng, T.-K. Wu, and P.-C. Li, “ECG Gated Ultrasonic Small Animal Imaging,” 27th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), pp. 1762-1765, 2005.

26. J.-H. Liu, G.-S. Jeng, T.-K. Wu and P.-C. Li, “ECG gating and triggering technologies for ultrasonic small animal imaging,” Symposium of Annual Conference of the Biomedical Engineering Society, Taoyuan, Taiwan, Dec. 17-18, 2005. (Best paper award)

27. G.-S. Jeng and S.-W. Huang, “SNR-Dependent Filter Design for Improving Depth of Field Using Modified Least Squares,” in Proc. IEEE Ultrason. Symp., 2003, pp. 1235–1238.

28. G.-S. Jeng, S.-W. Huang, P.-C. Li, and J. Tsao, “A Novel Pulse Compression Technique Using Inverse Filtering in Frequency Domain,” in Proc. IEEE Ultrason. Symp., 2001, pp. 1535–1538.

Patent

1. C. Wiest, D. Razansky, E. Nasonova, P.-C. Li, G.-S Jeng,” "Device and method for hybrid optoacoustic tomography and ultrasonography." U.S. Patent No. 10,881,299. 5 Jan. 2021.

2.  G.-S. Jeng, “An ultrasonic imaging equipment and method,” Taiwan Patent TW97144498A, Dec., 2012.