Patents:
- Translucent ultrasound transducers for photoacoustic imaging. US patent PCT/US20/17793.
- Compact Photoacoustic Sensor with Coaxial Light Delivery. US Patent Application 18/069,901.
- Ultrathin Photoacoustic Sensor based on Surface Acoustic Waves. US Patent Application 63/476,346.
- Miniaturized Transparent Photoacoustic Sensor Module. US Patent Application 18/340,821.
- Multielement receiver array photoacoustic plethysmography sensor enables integration into a wearable device. US Patent application 18/323,021.
- Photoacoustic devices and Systems including Surface wave sensing. US Patent application 18/319,414.
- Multispectral Photoacoustic Devices: 18/461,387; 18/361/394; 18/461,397; 18/461,402.
- Sensors and systems for determining a physiological parameters using external pressure. US Patent application 18/480,831.
- Motion based feedback for a photoacoustic sensor. US Patent application 18/461,429.
- Photoacoustic sensor with light-steering system. US Patent application 18/461,423.
- Non-invasive continuous blood pressure assessment in radial artery using miniaturized, wearable ultrasound imaging device (Provisional).
- A modular approach for photoacoustic imaging of neonatal brain. (Provisional).
- Portable Thermoacoustic Sensor and Imager. (Provisional).
- Applying DC Bias to Ultrasound Transducers for Enhanced Receive Sensitivity. (Provisional).
Book Chapter:
- Agrawal, S. et al. "Functional and Molecular Photoacoustic Computed Tomography Using Light Emitting Diodes." Book: LED-Based Photoacoustic Imaging, Publisher: Springer, Singapore. (2020).
Selected Journals:
- Agrawal, S., Gaddale, P., Karri, S.P.K. and Kothapalli, S.R., 2021. Learning Optical Scattering Through Symmetrical Orthogonality Enforced Independent Components for Unmixing Deep Tissue Photoacoustic Signals. IEEE Sensors Letters, 5(5), pp.1-4.
- Yazdani, A., Agrawal, S., Johnstonbaugh, K., Kothapalli, S.R. and Monga, V., 2021. Simultaneous Denoising and Localization Network for Photoacoustic Target Localization. IEEE Transactions on Medical Imaging.
- Agrawal, S., Dangi, A. and Kothapalli, S.R., 2020. Modeling Combined Ultrasound and Photoacoustic Imaging: Simulations aiding Device Development and Artificial Intelligence. Photoacoustics 24 (2021): 100304.
- Agrawal, S., Sankhe, C., et al. Development of a Multi-Modal Imaging Platform combining Ultrasound, Photoacoustic, Doppler and Elastography for Prostate Cancer Diagnosis. IEEE Transactions on Medical Imaging (In review).
- Agrawal, S., Kuniyil Ajith Singh, M., Johnstonbaugh, K., C Han, D., R Pameijer, C. and Kothapalli, S.R., 2021. Photoacoustic Imaging of Human Vasculature Using LED versus Laser Illumination: A Comparison Study on Tissue Phantoms and In Vivo Humans. Sensors, 21(2), p.424.
- Agrawal, S., Johnstonbaugh, K., Clark, J.Y., Raman, J.D., Wang, X. and Kothapalli, S.R., 2020. Design, Development, and Multi-Characterization of an Integrated Clinical Transrectal Ultrasound and Photoacoustic Device for Human Prostate Imaging. Diagnostics, 10(8), p.566.
- Johnstonbaugh, K.*, Agrawal, S.*, Durairaj, D.A., Fadden, C., Dangi, A., Karri, S.P.K. and Kothapalli, S.R., 2020. A deep learning approach to photoacoustic wavefront localization in deep-tissue medium. IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 67(12), pp.2649-2659. (* = co-first authors)
- Chen, H., Agrawal, S., Dangi, A., Wible, C., Osman, M., Abune, L., Jia, H., Rossi, R., Wang, Y. and Kothapalli, S.R., 2019. Optical-resolution photoacoustic microscopy using transparent ultrasound transducer. Sensors, 19(24), p.5470.
- Dangi, A., Cheng, C.Y., Agrawal, S., Tiwari, S., Datta, G.R., Benoit, R.R., Pratap, R., Trolier-Mckinstry, S. and Kothapalli, S.R., 2019. A photoacoustic imaging device using piezoelectric micromachined ultrasound transducers (PMUTs). IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 67(4), pp.801-809.
- Agrawal, S., Fadden, C., Dangi, A., Yang, X., Albahrani, H., Frings, N., Heidari Zadi, S. and Kothapalli, S.R., 2019. Light-emitting-diode-based multispectral photoacoustic computed tomography system. Sensors, 19(22), p.4861.
- Dangi, A., Agrawal, S. and Kothapalli, S.R., 2019. Lithium niobate-based transparent ultrasound transducers for photoacoustic imaging. Optics letters, 44(21), pp.5326-5329.
- Dangi, A., Agrawal, S., Datta, G.R., Srinivasan, V. and Kothapalli, S.R., 2019. Towards a low-cost and portable photoacoustic microscope for point-of-care and wearable applications. IEEE Sensors Journal, 20(13), pp.6881-6888.
- Cheng, C.Y., Dangi, A., Ren, L., Tiwari, S., Benoit, R.R., Qiu, Y., Lay, H.S., Agrawal, S., Pratap, R., Kothapalli, S.R. and Mallouk, T.E., 2019. Thin film PZT-based PMUT arrays for deterministic particle manipulation. IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 66(10), pp.1606-1615.
Selected Conferences:
- Agrawal, S., Johnstonbaugh, K., Suresh, T., Garikipati, A., Singh, M.K.A., Karri, S.P.K. and Kothapalli, S.R., 2021, March. In vivo demonstration of reflection artifact reduction in LED-based photoacoustic imaging using deep learning. In Photons Plus Ultrasound: Imaging and Sensing 2021 (Vol. 11642, p. 116421K). International Society for Optics and Photonics.
- Chen, H., Osman, M., Mirg, S., Agrawal, S., Cai, J., Dangi, A. and Kothapalli, S.R., 2021, March. Transparent ultrasound transducers for multiscale photoacoustic imaging. In Photons Plus Ultrasound: Imaging and Sensing 2021 (Vol. 11642, p. 1164220). International Society for Optics and Photonics.
- Roy, K., Agrawal, S., Dangi, A., Liu, T., Chen, H., Jackson, T.N., Pratap, R. and Kothapalli, S.R., 2020, September. Body conformal linear ultrasound array for combined ultrasound and photoacoustic imaging. In 2020 IEEE International Ultrasonics Symposium (IUS) (pp. 1-4). IEEE.
- Agrawal, S., Yang, X., Albahrani, H., Fadden, C., Dangi, A., Singh, M.K.A. and Kothapalli, S.R., 2020, February. Low-cost photoacoustic computed tomography system using light-emitting-diodes. In Photons Plus Ultrasound: Imaging and Sensing 2020 (Vol. 11240, p. 1124058). International Society for Optics and Photonics.
- Agrawal, S., Singh, M.K.A., Yang, X., Albahrani, H., Dangi, A. and Kothapalli, S.R., 2020, February. Functional, molecular and structural imaging using LED-based photoacoustic and ultrasound imaging system. In Photons Plus Ultrasound: Imaging and Sensing 2020 (Vol. 11240, p. 112405A). International Society for Optics and Photonics.
- Dangi, A., Roy, K., Agrawal, S., Chen, H., Ashok, A., Wible, C., Osman, M., Pratap, R. and Kothapalli, S.R., 2020, February. A modular approach to neonatal whole-brain photoacoustic imaging. In Photons Plus Ultrasound: Imaging and Sensing 2020 (Vol. 11240, p. 1124057). International Society for Optics and Photonics.
- Durairaj, D.A., Agrawal, S., Johnstonbaugh, K., Chen, H., Karri, S.P.K. and Kothapalli, S.R., 2020, February. Unsupervised deep learning approach for photoacoustic spectral unmixing. In Photons Plus Ultrasound: Imaging and Sensing 2020 (Vol. 11240, p. 112403H). International Society for Optics and Photonics.
- Agrawal, S., Singh, M.K.A., Yang, X., Albahrani, H., Dangi, A. and Kothapalli, S.R., 2020, February. Photoacoustic imaging capabilities of light emitting diodes (LED) and laser sources: a comparison study. In Photons Plus Ultrasound: Imaging and Sensing 2020 (Vol. 11240, p. 1124059). International Society for Optics and Photonics.
- Agrawal, S., Dangi, A., Frings, N., Albahrani, H., Ghouth, S.B. and Kothapalli, S.R., 2019, February. Optimal design of combined ultrasound and multispectral photoacoustic deep tissue imaging devices using hybrid simulation platform. In Photons Plus Ultrasound: Imaging and Sensing 2019 (Vol. 10878, p. 108782L). International Society for Optics and Photonics.
- Johnstonbaugh, K., Agrawal, S., Abhishek, D., Homewood, M., Karri, S.P.K. and Kothapalli, S.R., 2019, February. Novel deep learning architecture for optical fluence dependent photoacoustic target localization. In Photons Plus Ultrasound: Imaging and Sensing 2019 (Vol. 10878, p. 108781L). International Society for Optics and Photonics.
- Dangi, A., Agrawal, S., Tiwari, S., Jadhav, S., Cheng, C., Datta, G.R., Trolier-McKinstry, S., Pratap, R. and Kothapalli, S.R., 2019, February. Ring PMUT array based miniaturized photoacoustic endoscopy device. In Photons Plus Ultrasound: Imaging and Sensing 2019 (Vol. 10878, p. 1087811). International Society for Optics and Photonics.
- Zhang, J., Agrawal, S., Dangi, A., Frings, N. and Kothapalli, S.R., 2019, February. Computer assisted photoacoustic imaging guided device for safer percutaneous needle operations. In Photons Plus Ultrasound: Imaging and Sensing 2019 (Vol. 10878, p. 1087866). International Society for Optics and Photonics.
- Dangi, A., Agrawal, S., Tiwari, S., Jadhav, S., Cheng, C., Trolier-McKinstry, S., Pratap, R. and Kothapalli, S.R., 2018, October. Evaluation of high frequency piezoelectric micromachined ultrasound transducers for photoacoustic imaging. In 2018 IEEE SENSORS (pp. 1-4). IEEE.
- Dangi, A., Agrawal, S., Lieberknecht, J., Zhang, J. and Kothapalli, S.R., 2018, October. Ring ultrasound transducer based miniaturized photoacoustic imaging system. In 2018 IEEE SENSORS (pp. 1-4). IEEE.
- Kothapalli, S., Dangi, A., Agrawal, S., Datta, G., Rahman, A. and Rahman, A., 2018, August. Terahertz vibrational mode imaging of molecules in real-time. In ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY (Vol. 256). 1155 16TH ST, NW, WASHINGTON, DC 20036 USA: AMER CHEMICAL SOC.
- Bhattacharyya, S., Agrawal, S., Jeevani, A. and Sengupta, S., 2014. Burstiness minimized rate control for high resolution H. 264 video conferencing. In 2014 Twentieth National Conference on Communications (NCC) (pp. 1-6). IEEE.