Zobrazeno 1 - 8 of 8 pro vyhledávání: '"Keita A. Yokoyama"'
2
Assessing the Impact of ARF Excitation Beam Width and Tracking Beam Concurrency on DoPIo Imaging Performance in a Calibrated Phantom
Autor: Keita A. Yokoyama, Keerthi Anand, Caterina M. Gallippi
Publikováno v: 2021 IEEE International Ultrasonics Symposium (IUS).
Double-profile intersection (DoPIo) ultrasound combines two displacement profiles capturing identical tissue motion following an acoustic radiation force (ARF) push to estimate shear elastic modulus via an empirically derived model. However, the disp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e4811afc9d44cda325b98afc7e2cd0f
https://doi.org/10.1109/ius52206.2021.9593658
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3
Elastically Anisotropic Phantoms Constructed from 3D-printed PLA Fibers
Autor: Gabriela Torres, Kristyna Herman, Keita A. Yokoyama, Caterina M. Gallippi
Publikováno v: 2020 IEEE International Ultrasonics Symposium (IUS).
Many tissues, such as muscle, kidney, and breast, are mechanically anisotropic. Appropriately exploited, mechanical anisotropy can be a clinically relevant target for noninvasive imaging. An imaging method's potential for interrogating mechanical ani
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ad35b17506cc4763acd4db3131bf7b1
https://doi.org/10.1109/ius46767.2020.9251564
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4
Viscoelastic Response Ultrasound: Methods, Validation, and In Vivo Clinical Applications of a New Approach to Viscoelastic Property Assessment
Autor: Christopher J. Moore, Gabriela Torres, Murad Hossain, Joseph B. Richardson, Caterina M. Gallippi, Keita A. Yokoyama
Publikováno v: 2020 IEEE International Ultrasonics Symposium (IUS).
Viscoelastic Response (VisR) ultrasound is a noninvasive method for interrogating the viscoelastic properties of tissue by observing, in the region of excitation, tissue displacement in response to successive acoustic radiation force impulses. Recent
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84d72dbd7cbe31712ee18b6febc9fe0c
https://doi.org/10.1109/ius46767.2020.9251846
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5
Blind Source Separation-Based Displacement Tracking Improves Quantitative, On-Axis Shear Elastic Modulus Estimation from DoPIo Ultrasound
Autor: Keita A. Yokoyama, Caterina M. Gallippi
Publikováno v: 2020 IEEE International Ultrasonics Symposium (IUS).
While SWEI methods require shear wave propagation to be sampled across a measurement kernel, the recently-introduced double-profile intersection (DoPIo) ultrasound can estimate shear moduli locally and on-axis by exploiting ARF-induced displacement u
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1cc44edfa71d0a84064a6cb992191ec
https://doi.org/10.1109/ius46767.2020.9251471
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6
Machine Learning-Based Double-Profile Intersection for Pointwise Prediction of Shear Elastic Modulus through Support Vector Regression
Autor: Keita A. Yokoyama, Caterina M. Gallippi, Nada Rahmouni
Publikováno v: 2020 IEEE International Ultrasonics Symposium (IUS).
Double-profile intersection (DoPIo) ultrasound is a new acoustic radiation force (ARF) imaging technique that exploits scatterer shearing under two different tracking point spread functions to estimate shear elastic moduli. Previous versions of DoPIo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d33805f53b719e46117136c812880ea
https://doi.org/10.1109/ius46767.2020.9251765
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7
Machine Learning Approaches for Quantitative Viscoelastic Response (QVisR) Ultrasound
Autor: Keita A. Yokoyama, Caterina M. Gallippi, Joseph B. Richardson, Christopher J. Moore, Keerthi Anand
Publikováno v: 2020 IEEE International Ultrasonics Symposium (IUS).
We present a quantitative extension of Viscoelastic Response (VisR) ultrasound that estimates shear elastic and viscous moduli from on-axis VisR displacement profiles in silico. Isotropic, homogeneous, linearly viscoelastic materials ranging from 1.5
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::acb8ec8f00855655f2e9f984c93978c2
https://doi.org/10.1109/ius46767.2020.9251830
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8
Double-profile intersection (DoPIo) elastography: a new approach to quantifying tissue elasticity
Autor: Caterina M. Gallippi, Murad Hossain, Keita A. Yokoyama
Publikováno v: 2019 IEEE International Ultrasonics Symposium (IUS).
Tissue elasticity can be measured by applying an acoustic radiation force (ARF) excitation and tracking mechanical responses like deformation or shear wave propagation via displacement tracking. However, tissue displacements tracked by ultrasound is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28a624477eebe4fa22765bd20d6f527c
https://doi.org/10.1109/ultsym.2019.8925667
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