TY - JOUR
T1 - Investigation on effect of transmit condition on ultrasonic measurement of 2D motion velocity
AU - Yano, Tatsuya
AU - Mozumi, Michiya
AU - Omura, Masaaki
AU - Nagaoka, Ryo
AU - Hasegawa, Hideyuki
N1 - Publisher Copyright:
© 2022 The Japan Society of Applied Physics.
PY - 2022/7/1
Y1 - 2022/7/1
N2 - A phase-sensitive 2D motion estimator is useful for measurement of minute tissue motion. However, the effect of conditions for emission of ultrasonic waves on the accuracy of such an estimator has not been investigated thoroughly. In the present study, the accuracy of the phase-sensitive 2D motion estimator was evaluated under a variety of transmission conditions. Although plane wave imaging with a single emission per frame achieved an extremely high temporal resolution of 10417 Hz, the accuracy in estimation of lateral velocities was worse than compound-based method or focused-beam method. By contrast, the accuracy in estimation of axial velocities hardly depended on the transmission conditions. Also, the phase-sensitive 2D motion estimator was combined with the block matching method to estimate displacements larger than the ultrasonic wavelength. Furthermore, the results show that the correlation coefficient in block matching has potential to be used for evaluation of the reliability of the estimated velocity.
AB - A phase-sensitive 2D motion estimator is useful for measurement of minute tissue motion. However, the effect of conditions for emission of ultrasonic waves on the accuracy of such an estimator has not been investigated thoroughly. In the present study, the accuracy of the phase-sensitive 2D motion estimator was evaluated under a variety of transmission conditions. Although plane wave imaging with a single emission per frame achieved an extremely high temporal resolution of 10417 Hz, the accuracy in estimation of lateral velocities was worse than compound-based method or focused-beam method. By contrast, the accuracy in estimation of axial velocities hardly depended on the transmission conditions. Also, the phase-sensitive 2D motion estimator was combined with the block matching method to estimate displacements larger than the ultrasonic wavelength. Furthermore, the results show that the correlation coefficient in block matching has potential to be used for evaluation of the reliability of the estimated velocity.
KW - block matching method
KW - high-frame-rate ultrasound
KW - phase-sensitive motion estimator
KW - wall motion velocity
UR - http://www.scopus.com/inward/record.url?scp=85131674544&partnerID=8YFLogxK
U2 - 10.35848/1347-4065/ac49fd
DO - 10.35848/1347-4065/ac49fd
M3 - 学術論文
AN - SCOPUS:85131674544
SN - 0021-4922
VL - 61
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - SG
M1 - SG1053
ER -