ultrasound

Pulse Arrival Time Segmentation into Cardiac and Vascular Intervals – Implications for Pulse Wave Velocity and Blood Pressure Estimation

Author(s): Fabian Beutel, Chris Van Hoof, Xavier Rottenberg, Koen Reesink, Evelien Hermeling
Pulse Arrival Time Segmentation into Cardiac and Vascular Intervals – Implications for Pulse Wave Velocity and Blood Pressure Estimation 461 480 IEEE Transactions on Biomedical Engineering (TBME)
Pulse wave velocity (PWV) is a pressure-dependent marker of arterial stiffness, wherefore pulse arrival time (PAT) has been widely investigated for cuff-less blood pressure (BP) estimation. However, PAT is typically biased by a cardiac delay and peripheral vasculature. Therefore, we demonstrate an ultrasound-based method for central PAT segmentation into cardiac isovolumic contraction (IVC) and vascular pulse transit time (PTT). Contrasting peripheral PAT, central PTT-based PWV explained more than twice as much variability in the reference PWV and yielded significantly lower BP estimation errors. Thereby this unilateral arterial stiffness assessment bears the potential to improve cardiovascular risk assessment in clinical routines. read more

Video Magnification Applied in Ultrasound

Author(s): Vincent Perrot, Sébastien Salles, Didier Vray, Hervé Liebgott
Video Magnification Applied in Ultrasound 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Biological tissues such as the myocardium or the artery walls are subject to fast and complex phenomena which are related to their physical properties (geometry, composition, stiffness, etc.) as well…

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Real-Time Blood Pressure Estimation From Force-Measured Ultrasound

Real-Time Blood Pressure Estimation From Force-Measured Ultrasound

Author(s): Aaron M. Zakrzewski, Athena Y. Huang, Rebecca Zubajlo, Brian W. Anthony
Real-Time Blood Pressure Estimation From Force-Measured Ultrasound 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Common techniques to measure blood pressure include an arterial catheter, an oscillometric pressure cuff, or an auscultatory pressure cuff. Oscillometric and auscultatory cuffs have an associated error, cannot be used…

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Automated In Vivo Sub-Hertz Analysis of Viscoelasticity (SAVE) for Evaluation of Breast Lesions

Author(s): Mahdi Bayat, Alireza Nabavizadeh, Viksit Kumar, Adriana Gregory, Michael Insana, Azra Alizad, Mostafa Fatemi
Automated In Vivo Sub-Hertz Analysis of Viscoelasticity (SAVE) for Evaluation of Breast Lesions 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Many breast tumors found by palpation manifest as stiff masses. The stiffness of tumor is related to a mechanical property known as elasticity. Elastography methods use tissue elasticity as a…

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Automated Compression Device for Viscoelasticity Imaging

Automated Compression Device for Viscoelasticity Imaging

Author(s): Alireza Nabavizadeh, Randall R. Kinnick, Mahdi Bayat, carolinaamador, Matthew W. Urban, Azra Alizad, Mostafa Fatemi
Automated Compression Device for Viscoelasticity Imaging 170 177 IEEE Transactions on Biomedical Engineering (TBME)

Such a device should be lightweight, portable and easy to use for patient studies to capture tissue dynamics under external stress. We present the design of an automated compression device…

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Small-Animal Whole-Body Photoacoustic Tomography: A Review

Small-Animal Whole-Body Photoacoustic Tomography: A Review 556 235 IEEE Transactions on Biomedical Engineering (TBME)

Jun Xia, Lihong V. Wang, Optical Imaging Lab, Washington University in St. Louis Volume 61, Issue 5, Page:1380-1389 Small animals, especially mice, are widely used in biomedical research for studying and…

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