Dr. Ashwin B. Parthasarathy
Associate Professor at Univ of South Florida
SPIE Involvement:
Conference Program Committee | Editorial Board Member: Biophotonics Discovery | Author
Area of Expertise:
Biomedical Optics , Microscopy , Tissue Optics
Profile Summary

I am a biomedical optics researcher specializing in the development of optical techniques for measuring and imaging physiological parameters. My primary interest is in prototyping instruments for non-invasive diagnosis and measurement of disease markers like tissue morphology or physiological states like blood flow and oxygenation, with an overall goal of tying microscopic and macroscopic measurements to develop better models of normal and diseased physiology.
Publications (23)

Proceedings Article | 17 March 2023 Presentation
Sang Hoon Chong, Vadim Markel, Ashwin Parthasarathy, Yi Hong Ong, Kenneth Abramson, Frank Moscatelli, Arjun Yodh
Proceedings Volume PC12361, PC1236109 (2023) https://doi.org/10.1117/12.2647303
KEYWORDS: Luminescence, Reconstruction algorithms, Diffuse optical imaging, 3D image processing, Tissues, Surgery, Image-guided intervention, Diffuse optical tomography, Detection and tracking algorithms

SPIE Journal Paper | 28 November 2022 Open Access
Sang Hoon Chong, Yihong Ong, Mirna El Khatib, Srinivasa Rao Allu, Ashwin Parthasarathy, Joel Greenberg, Arjun Yodh, Sergei Vinogradov
NPh, Vol. 9, Issue 04, 045006, (November 2022) https://doi.org/10.1117/12.10.1117/1.NPh.9.4.045006
KEYWORDS: Oxygen, Brain, Picosecond phenomena, Phosphorescence, Tissues, Blood circulation, Laser speckle contrast imaging, Blood, Neurophotonics, Capillaries

SPIE Journal Paper | 8 November 2022 Open Access
Sang Hoon Chong, Vadim Markel, Ashwin Parthasarathy, Yihong Ong, Kenneth Abramson, Frank A. Moscatelli, Arjun Yodh
JBO, Vol. 27, Issue 11, 116002, (November 2022) https://doi.org/10.1117/12.10.1117/1.JBO.27.11.116002
KEYWORDS: Luminescence, Tumors, Detection and tracking algorithms, Modulation, Tissues, Natural surfaces, Error analysis, Surgery, Reconstruction algorithms, Tissue optics

Proceedings Article | 4 March 2022 Presentation + Paper
Sadhu Moka, Abdul Mohaimen Safi, Penaz Parveen Sultana Mohammad, Ann Eddins, Ashwin Parthasarathy
Proceedings Volume 11944, 1194409 (2022) https://doi.org/10.1117/12.2610115
KEYWORDS: Tissue optics, Optical properties, Modulation, Diffusion, Tissues, Blood circulation, Spectroscopy, Scattering

SPIE Journal Paper | 15 December 2021 Open Access
Penaz Parveen Sultana Mohammad, Sittiprapa Isarangura, Ann Eddins, Ashwin Parthasarathy
NPh, Vol. 8, Issue 04, 045004, (December 2021) https://doi.org/10.1117/12.10.1117/1.NPh.8.4.045004
KEYWORDS: Sensors, Auditory cortex, Hemodynamics, Tissue optics, Near infrared spectroscopy, Statistical analysis, Neurophotonics, Scattering, Error analysis, Tissues

Proceedings Article | 5 March 2021 Presentation
Sang Hoon Chong, Yi Hong Ong, Mirna El Khatib, Srinivasa Rao Allu, Ashwin Parthasarathy, Joel Greenberg, Arjun Yodh, Sergei Vinogradov
Proceedings Volume 11629, 116291Z (2021) https://doi.org/10.1117/12.2579418
KEYWORDS: Brain, Oxygen, Positron emission tomography, Near infrared spectroscopy, Tissue optics, Temporal resolution, Somatosensory cortex, Neurovascular coupling, Neuroimaging, Mode conditioning cables

Proceedings Article | 21 February 2020 Paper
Proceedings Volume 11253, 112530W (2020) https://doi.org/10.1117/12.2546581
KEYWORDS: Blood circulation, Speckle, Sensors, Tissue optics, Photodiodes, Spectroscopy, Laser speckle contrast imaging

SPIE Journal Paper | 19 June 2018 Open Access
David Busch, James Davis, Angela Kogler, Robert Galler, Ashwin Parthasarathy, Arjun Yodh, Thomas Floyd
JBO, Vol. 23, Issue 06, 065003, (June 2018) https://doi.org/10.1117/12.10.1117/1.JBO.23.6.065003
KEYWORDS: Spinal cord, Tissue optics, Tissues, Laser safety, Injuries, Fiber optics, Skin, Laser tissue interaction, Safety, Hemodynamics

Proceedings Article | 28 July 2017 Paper
Detian Wang, Wesley Baker, Ashwin Parthasarathy, Liguo Zhu, Zeren Li, Arjun Yodh
Proceedings Volume 10411, 104110I (2017) https://doi.org/10.1117/12.2285447
KEYWORDS: Blood circulation, Optical testing, Spectroscopy, Tissues

Proceedings Article | 3 May 2017 Presentation
Sang Hoon Chong, Ashwin Parthasarathy, Venkaiah Kavuri, Frank Moscatelli, Sunil Singhal, Arjun Yodh
Proceedings Volume 10117, 101170D (2017) https://doi.org/10.1117/12.2253264
KEYWORDS: Tumors, Diffuse optical tomography, Imaging systems, Near infrared, Modulation, Digital micromirror devices, Luminescence, Micromirrors, Image-guided intervention, Surgery

Proceedings Article | 19 April 2017 Presentation
Sang Hoon Chong, Ashwin Parthasarathy, Venkaiah Kavuri, Frank Moscatelli, Sunil Singhal, Arjun Yodh
Proceedings Volume 10049, 1004904 (2017) https://doi.org/10.1117/12.2250470
KEYWORDS: Tumors, Stereoscopy, Diffuse optical imaging, Luminescence, Surgery, Imaging systems, Diffuse optical tomography, Image-guided intervention, 3D image processing, Solids

Proceedings Article | 17 February 2017 Paper
Ashwin Parthasarathy, Wesley Baker, Kimberly Gannon, Michael Mullen, John Detre, Arjun Yodh
Proceedings Volume 10059, 1005905 (2017) https://doi.org/10.1117/12.2253488
KEYWORDS: Blood circulation, Blood pressure, Spectroscopes, Tissue optics, Cerebral blood flow, Speckle, Brain, Arteries, Resistance, Spectroscopy, Tissues, Doppler effect

Proceedings Article | 17 March 2016 Paper
Ashwin Parthasarathy, Kimberly Gannon, Wesley Baker, Venki Kavuri, Michael Mullen, John Detre, Arjun Yodh
Proceedings Volume 9707, 97070H (2016) https://doi.org/10.1117/12.2225250
KEYWORDS: Optical correlators, Blood circulation, Blood pressure, Correlation function, Solids, Tissues, Cerebral blood flow, Photon counting, Data acquisition, Avalanche photodetectors

SPIE Journal Paper | 23 December 2015 Open Access
Zhe Li, Wesley Baker, Ashwin Parthasarathy, Tiffany Ko, Detian Wang, Steven Schenkel, Turgut Durduran, Gang Li, Arjun Yodh
JBO, Vol. 20, Issue 12, 125005, (December 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.12.125005
KEYWORDS: Calibration, Blood circulation, Tissue optics, Tissues, Ischemia, Spectroscopy, Optical properties, Diffuse optical spectroscopy, Optical testing, Blood

SPIE Journal Paper | 4 August 2015 Open Access
Wesley Baker, Ashwin Parthasarathy, Tiffany Ko, David Busch, Kenneth Abramson, Shih-Yu Tzeng, Rickson Mesquita, Turgut Durduran, Joel Greenberg, David Kung, Arjun Yodh
NPh, Vol. 2, Issue 03, 035004, (August 2015) https://doi.org/10.1117/12.10.1117/1.NPh.2.3.035004
KEYWORDS: Tissues, Modulation, Absorption, Blood circulation, Cerebral blood flow, Calibration, Head, Hemodynamics, Scattering, Optical properties

SPIE Journal Paper | 9 July 2015 Open Access
David Holt, Ashwin Parthasarathy, Olugbenga Okusanya, Jane Keating, Ollin Venegas, Charuhas Deshpande, Giorgos Karakousis, Brian Madajewski, Amy Durham, Shuming Nie, Arjun Yodh, Sunil Singhal
JBO, Vol. 20, Issue 07, 076002, (July 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.7.076002
KEYWORDS: Tumors, Luminescence, Imaging spectroscopy, Near infrared, Tissues, Fluorescence spectroscopy, Spectroscopy, Surgery, Near infrared spectroscopy, Tissue optics

Proceedings Article | 5 March 2015 Paper
Wesley Baker, Ashwin Parthasarathy, David Busch, Rickson Mesquita, Joel Greenberg, A. Yodh
Proceedings Volume 9319, 931919 (2015) https://doi.org/10.1117/12.2080185
KEYWORDS: Blood circulation, Tissues, Tissue optics, Diffusion, Cerebral blood flow, Absorption, Absorbance, Optical properties, Blood, Optical fibers

Proceedings Article | 4 March 2015 Paper
Ashwin Parthasarathy, Sang Hoon Chong, Frank Moscatelli, Sunil Singhal, Arjun Yodh
Proceedings Volume 9311, 93110X (2015) https://doi.org/10.1117/12.2080298
KEYWORDS: Luminescence, Tumors, Endoscopes, Surgery, Cameras, Tissues, Near infrared, Prototyping, Solids, Optical imaging

SPIE Journal Paper | 20 June 2014 Open Access
NPh, Vol. 1, Issue 01, 011009, (June 2014) https://doi.org/10.1117/12.10.1117/1.NPh.1.1.011009
KEYWORDS: Near infrared, Cerebral blood flow, Brain, Spectroscopy, Oxygen, Tissue optics, Tissues, Blood circulation, Signal to noise ratio, Magnetic resonance imaging

Proceedings Article | 9 February 2012 Paper
Lisa Richards, Erica Weber, Ashwin Parthasarathy, Kaelyn Kappeler, Douglas Fox, Andrew Dunn
Proceedings Volume 8207, 82074L (2012) https://doi.org/10.1117/12.909078
KEYWORDS: Laser speckle contrast imaging, Electrocardiography, Blood circulation, Microscopes, Cameras, Tissues, Image registration, Speckle, Surgery, Image filtering

SPIE Journal Paper | 1 November 2010 Open Access
Ashwin Parthasarathy, Erica Weber, Lisa Richards, Douglas Fox, Andrew Dunn
JBO, Vol. 15, Issue 06, 066030, (November 2010) https://doi.org/10.1117/12.10.1117/1.3526368
KEYWORDS: Blood circulation, Laser speckle contrast imaging, Microscopes, Surgery, Speckle, Electrocardiography, Brain, Cameras, Tumors, Cerebral blood flow

Proceedings Article | 20 February 2008 Paper
Proceedings Volume 6854, 68541F (2008) https://doi.org/10.1117/12.763241
KEYWORDS: Skin, Speckle, Blood circulation, Blood vessels, Arteries, Veins, Tissue optics, Doppler tomography, Blood, Capillaries

Proceedings Article | 15 February 2007 Paper
Proceedings Volume 6446, 644604 (2007) https://doi.org/10.1117/12.700572
KEYWORDS: Speckle, Microfluidics, Laser speckle contrast imaging, Speckle imaging, Tissues, Brain, Blood circulation, Modulation, Liquids, Capillaries

Showing 5 of 23 publications
Conference Committee Involvement (1)
Clinical and Translational Neurophotonics 2025
25 January 2025 | San Francisco, California, United States
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