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BioNano Monographs

Ultrasonic Methods for Measurement of Small Motion and Deformation of Biological Tissues for Assessment of Viscoelasticity

Editor
H. Hasegawa
H. Hasegawa
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H. Kanai
H. Kanai
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ISBN:
9780791860311
No. of Pages:
50
Publisher:
ASME Press
Publication date:
2014

The ultrasonic beam scans I (= 46 in this study) positions of tissue, e.g., along the longitudinal direction of the artery. As shown in Figure 1, with respect to each beam position i (= 1, 2, ..., I), RF pulses are transmitted with a time interval T from an ultrasonic probe, and the echo reflected by the arterial wall is received by the same probe. By referring to a B-mode or M-mode image constructed by the received RF echoes at each beam position, the depths, x1(0) and xMT(0) (corresponding to the distances from the probe), of the lumen-intima and media-adventitia boundaries of the posterior wall are manually assigned in the initial frame, where MT is the number of sampled points between these assigned boundaries.

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