Keita Yokoyama

College of Engineering

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Works (3)

Updated: April 5th, 2024 15:49

2022 article

Quantitative Estimation of Shear Elastic Heterogeneity and Anisotropy in Excised Canine Kidneys using Double Profile Intersection (DoPIo) Ultrasound

2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS).

By: K. Yokoyamaⁿ, T. Nichols ^* & C. Gallippiⁿ

author keywords: ARFI; Elastography; DoPIo; Beamforming; Heterogeneity; Anisotropy; Kidney

10.1109/IUS54386.2022.9957981

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UN Sustainable Development Goal Categories

3. Good Health and Well-being (Web of Science)

Source: Web Of Science

Added: February 6, 2023

2022 article

in vivo VisR Measurements of Viscoelasticity and Viscoelastic Anisotropy in Human Allografted Kidneys Differentiate Interstitial Fibrosis and Graft Rejection

2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS).

By: K. Yokoyamaⁿ, M. Hossainⁿ, M. Caughey ⁿ, M. Fisher^*, R. Detweiler^*, E. Chang^*, C. Gallippiⁿ

author keywords: ARFI; Elastography; VisR; Beamforming; Anisotropy; Viscoelasticity; Fibrosis; Inflammation

TL;DR: Viscoelastic Response imaging is relevant to early detection of transplant kidney fibrosis and rejection, which could enable timely interventions that extend graft life, and noninvasive VisR RE-based RR had similar performance but also differentiated rejected from fibrotic kidney. (via Semantic Scholar)

10.1109/IUS54386.2022.9958358

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3. Good Health and Well-being (Web of Science)

10. Reduced Inequalities (OpenAlex)

Source: Web Of Science

Added: February 6, 2023

2021 article

Assessing the Impact of ARF Excitation Beam Width and Tracking Beam Concurrency on DoPIo Imaging Performance in a Calibrated Phantom

INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS 2021).

By: K. Yokoyamaⁿ, K. Anandⁿ & C. Gallippiⁿ

author keywords: ARFI; Elastography; DoPIo; Speckle Tracking; PSF; Beamforming; Displacement Underestimation

TL;DR: In silico experiments suggested that DoPIo acquisitions performed using a wide ARF push beam and simultaneous tracking provided the most accurate and precise elasticity estimates, while all four combinations of parameters enabled the differentiation of a soft inclusion within a stiff background in vitro. (via Semantic Scholar)

10.1109/IUS52206.2021.9593658

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3. Good Health and Well-being (Web of Science)

Source: Web Of Science

Added: August 15, 2022

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