Publications

Journals:

[1]  H. Tai, L. Basavarajappa, and K. Hoyt, "3-D H-scan ultrasound imaging of relative scatterer size using a matrix array transducer and sparse random aperture compounding", Computers in Biology and Medicine, p.106316. https://doi.org/10.1016/j.compbiomed.2022.106316

[2] L. Basavarajappa and K. Hoyt, “Photoacoustic graphic equalization and application in characterization of red blood cell aggregates", Photoacoustics, Vol. 26, p 100365, June 2022, https://doi.org/10.1016/j.pacs.2022.100365

[3]    J. Baek, L. Basavarajappa, K. Hoyt, and K. J. Parker, “Disease-specific imaging utilizing support vector machine classification of h-scan parameters: assessment of steatosis in a rat model,” IEEE Trans. Ultrason. Ferroelectr. Freq. Control, vol. 69, no. 2, pp. 720–731, Feb. 2022, doi: 10.1109/TUFFC.2021.3137644.

[4]    J. Baek et al., “Clusters of ultrasound scattering parameters for the classification of steatotic and normal livers,” Ultrasound Med. Biol., vol. 47, no. 10, pp. 3014–3027, Oct. 2021, doi: 10.1016/j.ultrasmedbio.2021.06.010.

[5]    L. Basavarajappa et al., “Multiparametric ultrasound imaging for the assessment of normal versus steatotic livers,” Sci. Rep., vol. 11, no. 1, p. 2655, Dec. 2021, doi: 10.1038/s41598-021-82153-z.

[6]    J. B. de la Peña et al., “Intercellular Arc Signaling Regulates Vasodilation,” J. Neurosci., vol. 41, no. 37, pp. 7712–7726, Sep. 2021, doi: 10.1523/JNEUROSCI.0440-21.2021.

[7]    L. Basavarajappa, G. Rijal, and K. Hoyt, “Multifocused ultrasound therapy for controlled microvascular permeabilization and improved drug delivery,” IEEE Trans. Ultrason. Ferroelectr. Freq. Control, vol. 68, no. 4, pp. 961–968, Apr. 2021, doi: 10.1109/TUFFC.2020.3026697.

[8]    B. Lokesh and A. K. Thittai, “Diverging beam transmit through limited aperture: A method to reduce ultrasound system complexity and yet obtain better image quality at higher frame rates,” Ultrasonics, vol. 91, pp. 150–160, Jan. 2019, doi: 10.1016/j.ultras.2018.08.016.

[9]    B. Lokesh and A. K. Thittai, “Diverging beam with synthetic aperture technique for rotation elastography: preliminary experimental results,” Phys. Med. Biol., vol. 63, no. 20, p. 20LT01, Oct. 2018, doi: 10.1088/1361-6560/aae1c6.

[10]  B. Lokesh, A. M. ten Dam, C. L. de Korte, and A. K. Thittai, “Understanding the contrast mechanism in rotation elastogram: a parametric study,” Ultrasound Med. Biol., vol. 44, no. 8, pp. 1860–1872, Aug. 2018, doi: 10.1016/j.ultrasmedbio.2018.05.001.

[11]  B. Lokesh, B. R. Chintada, and A. K. Thittai, “Rotation elastogram estimation using synthetic transmit-aperture technique: a feasibility study,” Ultrason. Imaging, vol. 39, no. 3, pp. 189–204, May 2017, doi: 10.1177/0161734616686746.

Conferences Proceedings:

[1]    L. Basavarajappa and K. Hoyt, “2-D mapping of optical absorber size using photoacoustic graphic equalization imaging,” in 2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS), Gainesville, FL, USA, Oct. 2021, pp. 1–4. doi: 10.1109/LAUS53676.2021.9639136.

[2]    Lokesh B and A. K. Thittai, “Design of a low cost ultrasound system using diverging beams and synthetic aperture approach: Preliminary study,” in 2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017), Melbourne, Australia, Apr. 2017, pp. 1108–1111. doi: 10.1109/ISBI.2017.7950710.

[3]    L. Basavarajappa and K. Hoyt, “High-Frequency Quantitative Photoacoustic Imaging and Pixel-Level Tissue Classification,” in 2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI), Iowa City, IA, USA, Apr. 2020, pp. 308–311. doi: 10.1109/ISBI45749.2020.9098585.

[4]    Lokesh B and A. K. Thittai, “Spatial resolution improvement in Plane Wave Imaging using adaptive Sign Coherence Factor weighting,” in 2016 IEEE International Ultrasonics Symposium (IUS), Tours, France, Sep. 2016, pp. 1–4. doi: 10.1109/ULTSYM.2016.7728900.

[5]    A. M. Stiller, L. Basavarajappa, K. Brown, W. Voit, J. J. Pancrazio, and K. Hoyt, “Elastrographic assessment of micromotion-induced strain in tissue adjacent to intracortical implants in rat,” in 2019 IEEE International Ultrasonics Symposium (IUS), Glasgow, United Kingdom, Oct. 2019, pp. 435–438. doi: 10.1109/ULTSYM.2019.8925593.

[6]    L. Basavarajappa, G. Rijal, and K. Hoyt, “Image-guided focused ultrasound therapy system and method for improved anticancer drug delivery,” in 2019 IEEE International Ultrasonics Symposium (IUS), Oct. 2019, pp. 2428–2431. doi: 10.1109/ULTSYM.2019.8925705.

[7]    L. Basavarajappa et al., “Early assessment of nonalcoholic fatty liver disease using multiparametric ultrasound imaging,” in 2020 IEEE International Ultrasonics Symposium (IUS), Las Vegas, NV, USA, Sep. 2020, pp. 1–4. doi: 10.1109/IUS46767.2020.9251437.

[8]    L. Basavarajappa, J. Li, H. Tai, J. Song, K. J. Parker, and K. Hoyt, “Early Detection of Liver Steatosis using Multiparametric Ultrasound Imaging,” in 2021 IEEE International Ultrasonics Symposium (IUS), Xi’an, China, Sep. 2021, pp. 1–4. doi: 10.1109/IUS52206.2021.9593500.

[9]    L. Basavarajappa and K. Hoyt, “Photoacoustic Imaging the Relative Size of Optical Absorbing Aggregates,” in 2021 IEEE International Ultrasonics Symposium (IUS), Xi’an, China, Sep. 2021, pp. 1–4. doi: 10.1109/IUS52206.2021.9593680.

[10]  M. H. Jahanandish, L. Basavarajappa, and K. Hoyt, “Information theoretical measures from ultrasound data for human motion understanding,” in 2021 IEEE UFFC Latin America Ultrasonics Symposium (LAUS), Gainesville, FL, USA, Oct. 2021, pp. 1–4. doi: 10.1109/LAUS53676.2021.9639217.

[11]  H. Tai, L. Basavarajappa, M. Khairalseed, and K. Hoyt, “3-D Voxel-level Tissue Classification of Ultrasound Scattering using a Sparse Matrix Array Transducer,” in 2021 IEEE International Ultrasonics Symposium (IUS), Xi’an, China, Sep. 2021, pp. 1–4. doi: 10.1109/IUS52206.2021.9593918.

[12]  R. Margolis, L. Basavarajappa, J. Li, and K. Hoyt, “Ultrasound Image-Guided Drug Delivery using a Spherically Focused Phased Array Transducer,” in 2021 IEEE International Ultrasonics Symposium (IUS), Xi’an, China, Sep. 2021, pp. 1–4. doi: 10.1109/IUS52206.2021.9593806.

Patent:

Thittai, A. K., & Lokesh, B. (2024). Method and system for ultrasound beamforming using limited number of active transducer elements and diverging beams. (Patent No. 543189). Intellectual Property India.