Conference Presentations

2024

187th Meeting of the Acoustical Society of America, 18-22 November 2024

Shekhar, H., Trivedi, V., Wallach., E. , Basterrechea, K. F., Bader, K. B., “Evaluation of nonlinear imaging strategies for histotripsy monitoring,” (lecture presentation).

International Tissue Elasticity Conference (ITEC), Lyon, France, October 2024.

Bisht, S.R., Marri, B.P., and Mercado-Shekhar, K.P., “Elucidating the effect of fluid content on model-free elastography estimates using viscoelastic phantoms,” (lecture presentation).

2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium (UFFC-JS), Taipei, Taiwan, 22nd-26th Sept. 2024.

Singh, A.K., Shekhar, H. “Accelerating Total Focusing Method Using Sparse Arrays with Modified Coherence Factor Weighting for Non destructive Testing” (lecture presentation)
Chandra, A., and Mercado-Shekhar, K.P. “Evaluation of a Mechanical Vibration System with Two End-Effectors for Longitudinal Shear Wave Viscoelastography: Simulations and In Vitro Studies Using Anisotropic Phantoms,” (poster presentation).
Patil, J.M., Rao, S., Vazhayil, V., Pandya, H.J., Mahadevan, A., and Mercado-Shekhar, K.P. “Differentiating glioblastoma and normal tissue using Nakagami and Burr distribution analyses of the echo envelope: An ex-vivo study.” (poster presentation).

23rd Annual International Symposium on Therapeutic Ultrasound, Taipei, Taiwan, 19th-22nd Sept. 2024

Jain, S., Agarwal, M., Dhawan, R., Mistry, N., and Shekhar, H. “Suppressing Streak Artifacts in Ultrasound Images during Therapy Guidance by a Hybrid U-Net and Enhanced Masked Autoencoder,” (poster presentation).
Dhawan, R., Agarwal, M., Jain, S., Ruparel, H.V., and Shekhar, H. “Reconstruction of Ultrasound Super-Resolution Images using a Hybrid Attention-based U-Net Architecture applied to sparse data.” (poster presentation).
Singh, A.K. and Shekhar, H. “Effect of therapy pulse duration on passive cavitation imaging performance in silico”, (poster presentation)

186th Meeting of the Acoustical Society of America, Ottawa, Quebec, Canada, 8th-12th May 2024.

Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Gold Nanoparticle-Coating Reduces Acoustic Pressure Threshold for Nanodroplet Vaporization,” (lecture presentation).
Khan, A., Bisht, S., Mistry, N., Mercado-Shekhar, K.P., and Dalvi, S. “Ultrasound Responsive Multi-Layered Emulsions for Drug Delivery,” (lecture presentation).
Mercado-Shekhar, K.P. “Learnings from developing a Scientific Writing Certification program at IIT Gandhinagar,” (lecture presentation).

2024 IEEE Latin American Ultrasonics Symposium (LAUS), Montevideo, Uruguay, 8th-10th May 2024.

Nair, H., and Mercado-Shekhar, K.P. “Ultrafast Doppler ultrasound for assessing blood perfusion in the foot: A feasibility study,” (lecture presentation).

2024 IEEE South Asian Ultrasonics Symposium (SAUS), Gandhinagar, India, 27th-29th March 2024.

Bisht, S.R., Marri, B.P., and Mercado-Shekhar, K.P., “Characterizing the shear wave attenuation of viscoelastic phantoms,” (lecture presentation).
Chandra, A. and Mercado-Shekhar, K.P., “Effect of fiber orientation on shear wave elastography estimates: In silico and experimental studies using a novel muscle phantom,” (poster presentation).
Karmakar, J., Dhawan, R., and Mercado-Shekhar, K.P., “Assessing the confounding effect of vascularity on viscoelastic parameters using shear wave visco-elastography – A phantom study.”
Khan, A., Bisht, S.R., Mistry, N., Mercado-Shekhar K.P., and Dalvi S.V., “Ultrasound responsive multi-layered emulsions for drug delivery,” (lecture presentation).
Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Gold nanoparticle-coating reduces acoustic pressure threshold for nanodroplet vaporization,” (lecture presentation).
KS, M., Bisht, S.R., and Mercado-Shekhar, K.P., “Design and development of a portable, low cost and pure sinusoidal external mechanical vibration system for ultrasound shear wave elastography,” (1st Place, Best Poster Award).
Oza, S.H., Patil, J.M., Raval, V., and Mercado-Shekhar, K.P. “Differentiation of intraocular tumors using Nakagami envelope statistics,” (Best Poster Award Finalist).
Patil, J.M., Nair, H., Joshi, P., Murudkar, S., Shekhar, H., and Mercado-Shekhar, K.P. “Characterizing male baldness and female pattern hair loss via scalp and hair testing, and ultrasound envelope statistics: A pilot study,” (3rd Place, Best Poster Award).
Paul, A., and Mercado-Shekhar, K.P., “Quantifying the effect of transducer F-number, focal depth, and tissue viscosity on Scholte wave-induced bias in shear wave elastography: A numerical study,” (poster presentation).
Singh, A.K., Patil, J.M., and Shekhar, H. “The pth standard deviation factor-weighted delay-and-sum beamforming for needle visualization in B-mode ultrasound images,” (Best Poster Award Finalist).
Shekhar, H., Singh, A.K. “Effect of the therapy pulse duration on the performance of passive cavitation imaging: A simulation study” (poster presentation)
Das, S., Singh, A. K. and Shekhar, H., “Sparse array implementation of synthetic aperture focusing technique with pth-root beamforming for non destructive testing applications” (poster presentation)

2023

2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, 3rd-8th Sept. 2023.

Bisht, S.R., Patel, P., Thareja, P., and Mercado-Shekhar, K.P., “Benchmarking Linear and Viscoelastic Shear Wave elastography against rheometry: a phantom study,” (poster presentation).
Marri, B., Karmakar, J., Bisht, S.R., and Mercado-Shekhar, K.P. “Shear Wave viscoelastography of Phantoms with Tunable Viscoelastic Properties Fabricated Using a Combination of Low and High Viscosity Polyvinyl Alcohol,” (poster presentation).
Patil, J.M., Trivedi, V., Yadav, A., Pandya, H.J., Vazhayil, V., Rao, S., Mahadevan, A., and Mercado-Shekhar, K.P. “Differentiating normal brain tissue and glioblastoma using the integrated backscatter coefficient: An ex vivo study,” (poster presentation).
Singh, A.K., Basterrechea, K. F., Bader, K. B., Shekhar, H. “Passive Cavitation Imaging Using Pth Root Delay Add Sum beamforming: in vitro and in Vivo Feasibility Assessment for histotripsy Guidance” (poster presentation).

184th Meeting of the Acoustical Society of America, Chicago, Illinois, U.S.A, 8th-12th May 2023.

Kakkar, M., Patil, J.M., Trivedi, V., Yadav, A., Rao, S., Vazhayil, V., Mahadevan, A., Shekhar, H., and Mercado-Shekhar, K.P. “Evaluating the feasibility of differentiating glioblastoma and normal brain tissue using H-scan imaging: An ex vivo study,” (lecture presentation).
Kaushik, A., Menon, S., and Shekhar, H. “Delayed subharmonic response of a phospholipid-shelled ultrasound contrast agent: Effect of temperature, protein concentration and ambient pressure,” (lecture presentation).
Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Contrast- specific imaging of histotripsy: Chirp-coded subharmonic imaging combined with Volterra Filtering,” (lecture presentation).

Association for Research in Vision and Ophthalmology (ARVO) 2023, New Orleans, LA, U.S.A., 21st-27th April 2023.

Raval, V., J. Karmakar, Mercado-Shekhar, K.P., Shekhar, H., and Singh, A. “Quantitative perfusion analysis using contrast-enhanced ultrasound for benign and malignant choroidal tumor,” (poster presentation).

3rd International Conference on Nanomaterials in Biology (2023). IIT Gandhinagar, India

Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Ultrasound-Responsive Gold Nanoparticle-Coated Perfluorocarbon Lipid Nanodroplets as a Potential Carrier for Drug Delivery,” (lecture presentation).

2022

Symposium cum Hands-on Workshop on Medical Imaging, IISER Thruvananthapuram, 20th-22nd October 2022.

Bisht, S.R. and Mercado-Shekhar, K.P. “Ultrasound shear wave elastography of viscoelastic tissue-mimicking polyvinyl alcohol phantoms: Comparison with rheometry,” **Won 3rd place best poster (tie).
Paul, A. and Mercado-Shekhar, K.P. “A numerical model for acoustic radiation force-induced ultrasound shear wave elastography,” **Won 3rd place best poster (tie).
Kakkar, M., Patil, J.M., Vazhayil, V., Rao, S., Mahadevan, A., Shekhar, H., and Mercado-Shekhar, K.P. “Evaluation of H-Scan Imaging for differentiating normal brain tissue and glioblastoma brain samples,” (poster presentation).
Patil, J.M., Vazhayil, V., Rao, S., Mahadevan, A., and Mercado-Shekhar, K.P.* “Differentiating normal brain tissue and glioblastoma using the integrated backscatter coefficient in ultrasound imaging,” (poster presentation).
Nair, H.S. and Mercado-Shekhar, K.P.*. “Ultrafast Doppler ultrasound assessment of perfusion in the foot: A feasibility study in healthy volunteers,” (poster presentation).
Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Histotripsy image guidance using subharmonic imaging with chirp-coded excitation and Volterra Filtering,” (poster presentation).
Singh, A.K., Shekhar, H. “P-th Root Compression Delay Add Sum Beamforming for Cavitation Imaging: In Vitro Evaluation” (poster presentation).

IEEE International Ultrasound Symposium, Venice, Italy, October 10-13, 2022.

Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Contrast-Enhanced Imaging of Histotripsy Bubble Clouds using Chirp Coded Excitation and Volterra Filtering,” (poster presentation).

21st Annual International Society on Therapeutic Ultrasound, Toronto, Canada, June 7 – 10, 2022.

Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Histotripsy bubble cloud contrast using chirp coded excitation and Volterra filtering,” (poster presentation).

2021

180th Meeting of the Acoustical Society of America – Acoustics in Focus, Virtual, 8th-10th June 2021.

Sharma, A., Marapureddy, S.G., Bisht, S. R., Thareja, P., and Mercado-Shekhar, K.P.. “Viscoelastic polyvinyl alcohol (PVA) phantoms for ultrasound elastography, “ (lecture presentation).
Yadav, A., Trivedi, V., and Mercado-Shekhar, K.P. “Evaluation of H-scan imaging in phantoms and ex vivo tissue,” (lecture presentation).

International Symposium on Ultrasound Imaging and Tissue Characterization (UITC), Virtual, 2nd – 4th June 2021.

Sharma, A., Marapureddy, S.G., Thareja, P., and Mercado-Shekhar, K.P.* “Characterization of the viscoelastic properties of polyvinyl alcohol (PVA) phantoms for ultrasound elastography,” (lecture presentation).

International Conference on Formulations in Food and Healthcare (ICFFH), Virtual, 8th-11th March 2021.

Sharma, A., Marapureddy, S.G., Thareja, P., and Mercado-Shekhar, K.P.* “Fabrication and characterization of tissue-mimicking viscoelastic polyvinyl alcohol (PVA) phantoms for ultrasound elastography,” (lecture presentation).

Conference Presentations

2024

Shekhar, H., Trivedi, V., Wallach., E. , Basterrechea, K. F., Bader, K. B., “Evaluation of nonlinear imaging strategies for histotripsy monitoring,” (lecture presentation).

International Tissue Elasticity Conference (ITEC), Lyon, France, October 2024.

Bisht, S.R., Marri, B.P., and Mercado-Shekhar, K.P., “Elucidating the effect of fluid content on model-free elastography estimates using viscoelastic phantoms,” (lecture presentation).

2024 IEEE Ultrasonics, Ferroelectrics, and Frequency Control Joint Symposium (UFFC-JS), Taipei, Taiwan, 22nd-26th Sept. 2024.

Singh, A.K., Shekhar, H. “Accelerating Total Focusing Method Using Sparse Arrays with Modified Coherence Factor Weighting for Non destructive Testing” (lecture presentation)

Chandra, A., and Mercado-Shekhar, K.P. “Evaluation of a Mechanical Vibration System with Two End-Effectors for Longitudinal Shear Wave Viscoelastography: Simulations and In Vitro Studies Using Anisotropic Phantoms,” (poster presentation).

Patil, J.M., Rao, S., Vazhayil, V., Pandya, H.J., Mahadevan, A., and Mercado-Shekhar, K.P. “Differentiating glioblastoma and normal tissue using Nakagami and Burr distribution analyses of the echo envelope: An ex-vivo study.” (poster presentation).

23rd Annual International Symposium on Therapeutic Ultrasound, Taipei, Taiwan, 19th-22nd Sept. 2024

Jain, S., Agarwal, M., Dhawan, R., Mistry, N., and Shekhar, H. “Suppressing Streak Artifacts in Ultrasound Images during Therapy Guidance by a Hybrid U-Net and Enhanced Masked Autoencoder,” (poster presentation).

Dhawan, R., Agarwal, M., Jain, S., Ruparel, H.V., and Shekhar, H. “Reconstruction of Ultrasound Super-Resolution Images using a Hybrid Attention-based U-Net Architecture applied to sparse data.” (poster presentation).

186th Meeting of the Acoustical Society of America, Ottawa, Quebec, Canada, 8th-12th May 2024.

Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Gold Nanoparticle-Coating Reduces Acoustic Pressure Threshold for Nanodroplet Vaporization,” (lecture presentation).

Khan, A., Bisht, S., Mistry, N., Mercado-Shekhar, K.P., and Dalvi, S. “Ultrasound Responsive Multi-Layered Emulsions for Drug Delivery,” (lecture presentation).

Mercado-Shekhar, K.P. “Learnings from developing a Scientific Writing Certification program at IIT Gandhinagar,” (lecture presentation).

2024 IEEE Latin American Ultrasonics Symposium (LAUS), Montevideo, Uruguay, 8th-10th May 2024.

Nair, H., and Mercado-Shekhar, K.P. “Ultrafast Doppler ultrasound for assessing blood perfusion in the foot: A feasibility study,” (lecture presentation).

2024 IEEE South Asian Ultrasonics Symposium (SAUS), Gandhinagar, India, 27th-29th March 2024.

Bisht, S.R., Marri, B.P., and Mercado-Shekhar, K.P., “Characterizing the shear wave attenuation of viscoelastic phantoms,” (lecture presentation).

Chandra, A. and Mercado-Shekhar, K.P., “Effect of fiber orientation on shear wave elastography estimates: In silico and experimental studies using a novel muscle phantom,” (poster presentation).

Karmakar, J., Dhawan, R., and Mercado-Shekhar, K.P., “Assessing the confounding effect of vascularity on viscoelastic parameters using shear wave visco-elastography – A phantom study.”

Khan, A., Bisht, S.R., Mistry, N., Mercado-Shekhar K.P., and Dalvi S.V., “Ultrasound responsive multi-layered emulsions for drug delivery,” (lecture presentation).

Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Gold nanoparticle-coating reduces acoustic pressure threshold for nanodroplet vaporization,” (lecture presentation).

KS, M., Bisht, S.R., and Mercado-Shekhar, K.P., “Design and development of a portable, low cost and pure sinusoidal external mechanical vibration system for ultrasound shear wave elastography,” (1st Place, Best Poster Award).

Oza, S.H., Patil, J.M., Raval, V., and Mercado-Shekhar, K.P. “Differentiation of intraocular tumors using Nakagami envelope statistics,” (Best Poster Award Finalist).

Patil, J.M., Nair, H., Joshi, P., Murudkar, S., Shekhar, H., and Mercado-Shekhar, K.P. “Characterizing male baldness and female pattern hair loss via scalp and hair testing, and ultrasound envelope statistics: A pilot study,” (3rd Place, Best Poster Award).

Paul, A., and Mercado-Shekhar, K.P., “Quantifying the effect of transducer F-number, focal depth, and tissue viscosity on Scholte wave-induced bias in shear wave elastography: A numerical study,” (poster presentation).

Singh, A.K., Patil, J.M., and Shekhar, H. “The pth standard deviation factor-weighted delay-and-sum beamforming for needle visualization in B-mode ultrasound images,” (Best Poster Award Finalist).

2023

2023 IEEE International Ultrasonics Symposium (IUS), Montreal, Canada, 3rd-8th Sept. 2023.

Bisht, S.R., Patel, P., Thareja, P., and Mercado-Shekhar, K.P., “Benchmarking Linear and Viscoelastic Shear Wave elastography against rheometry: a phantom study,” (poster presentation).

Marri, B., Karmakar, J., Bisht, S.R., and Mercado-Shekhar, K.P. “Shear Wave viscoelastography of Phantoms with Tunable Viscoelastic Properties Fabricated Using a Combination of Low and High Viscosity Polyvinyl Alcohol,” (poster presentation).

Patil, J.M., Trivedi, V., Yadav, A., Pandya, H.J., Vazhayil, V., Rao, S., Mahadevan, A., and Mercado-Shekhar, K.P. “Differentiating normal brain tissue and glioblastoma using the integrated backscatter coefficient: An ex vivo study,” (poster presentation).

Singh, A.K., Basterrechea, K. F., Bader, K. B., Shekhar, H. “Passive Cavitation Imaging Using Pth Root Delay Add Sum beamforming: in vitro and in Vivo Feasibility Assessment for histotripsy Guidance” (poster presentation).

184th Meeting of the Acoustical Society of America, Chicago, Illinois, U.S.A, 8th-12th May 2023.

Kakkar, M., Patil, J.M., Trivedi, V., Yadav, A., Rao, S., Vazhayil, V., Mahadevan, A., Shekhar, H., and Mercado-Shekhar, K.P. “Evaluating the feasibility of differentiating glioblastoma and normal brain tissue using H-scan imaging: An ex vivo study,” (lecture presentation).

Kaushik, A., Menon, S., and Shekhar, H. “Delayed subharmonic response of a phospholipid-shelled ultrasound contrast agent: Effect of temperature, protein concentration and ambient pressure,” (lecture presentation).

Association for Research in Vision and Ophthalmology (ARVO) 2023, New Orleans, LA, U.S.A., 21st-27th April 2023.

Raval, V., J. Karmakar, Mercado-Shekhar, K.P., Shekhar, H., and Singh, A. “Quantitative perfusion analysis using contrast-enhanced ultrasound for benign and malignant choroidal tumor,” (poster presentation).

3rd International Conference on Nanomaterials in Biology (2023). IIT Gandhinagar, India

Mistry, N., Dhawan, R., and Mercado-Shekhar, K.P. “Ultrasound-Responsive Gold Nanoparticle-Coated Perfluorocarbon Lipid Nanodroplets as a Potential Carrier for Drug Delivery,” (lecture presentation).

2022

Symposium cum Hands-on Workshop on Medical Imaging, IISER Thruvananthapuram, 20th-22nd October 2022.

Bisht, S.R. and Mercado-Shekhar, K.P. “Ultrasound shear wave elastography of viscoelastic tissue-mimicking polyvinyl alcohol phantoms: Comparison with rheometry,” **Won 3rd place best poster (tie).

Paul, A. and Mercado-Shekhar, K.P. “A numerical model for acoustic radiation force-induced ultrasound shear wave elastography,” **Won 3rd place best poster (tie).

Kakkar, M., Patil, J.M., Vazhayil, V., Rao, S., Mahadevan, A., Shekhar, H., and Mercado-Shekhar, K.P. “Evaluation of H-Scan Imaging for differentiating normal brain tissue and glioblastoma brain samples,” (poster presentation).

Patil, J.M., Vazhayil, V., Rao, S., Mahadevan, A., and Mercado-Shekhar, K.P.* “Differentiating normal brain tissue and glioblastoma using the integrated backscatter coefficient in ultrasound imaging,” (poster presentation).

Nair, H.S. and Mercado-Shekhar, K.P.*. “Ultrafast Doppler ultrasound assessment of perfusion in the foot: A feasibility study in healthy volunteers,” (poster presentation).

IEEE International Ultrasound Symposium, Venice, Italy, October 10-13, 2022.

Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Contrast-Enhanced Imaging of Histotripsy Bubble Clouds using Chirp Coded Excitation and Volterra Filtering,” (poster presentation).

21st Annual International Society on Therapeutic Ultrasound, Toronto, Canada, June 7 – 10, 2022.

Trivedi, V., Wallach, E., Bader, K. B., Shekhar, H. “Histotripsy bubble cloud contrast using chirp coded excitation and Volterra filtering,” (poster presentation).

2021

180th Meeting of the Acoustical Society of America – Acoustics in Focus, Virtual, 8th-10th June 2021.

Sharma, A., Marapureddy, S.G., Bisht, S. R., Thareja, P., and Mercado-Shekhar, K.P.. “Viscoelastic polyvinyl alcohol (PVA) phantoms for ultrasound elastography, “ (lecture presentation).

Yadav, A., Trivedi, V., and Mercado-Shekhar, K.P. “Evaluation of H-scan imaging in phantoms and ex vivo tissue,” (lecture presentation).

International Symposium on Ultrasound Imaging and Tissue Characterization (UITC), Virtual, 2nd – 4th June 2021.

Sharma, A., Marapureddy, S.G., Thareja, P., and Mercado-Shekhar, K.P.* “Characterization of the viscoelastic properties of polyvinyl alcohol (PVA) phantoms for ultrasound elastography,” (lecture presentation).

International Conference on Formulations in Food and Healthcare (ICFFH), Virtual, 8th-11th March 2021.

Sharma, A., Marapureddy, S.G., Thareja, P., and Mercado-Shekhar, K.P.* “Fabrication and characterization of tissue-mimicking viscoelastic polyvinyl alcohol (PVA) phantoms for ultrasound elastography,” (lecture presentation).

Nair, H.S. and **Mercado-Shekhar, K.P.*.** “Ultrafast Doppler ultrasound assessment of perfusion in the foot: A feasibility study in healthy volunteers,” (poster presentation).