TY - JOUR
T1 - Evaluation of error factors depending on ultrasonic transmitted beamwidth in measurement of myocardial minute velocity
AU - Sugahara, Kana
AU - Mori, Shohei
AU - Arakawa, Mototaka
AU - Kanai, Hiroshi
N1 - Funding Information:
This work was supported in part by JSPS KAKENHI 19K22943.
Publisher Copyright:
© 2021 The Japan Society of Applied Physics.
PY - 2021/7
Y1 - 2021/7
N2 - A measurement by transmitting ultrasonic non-focusing beams increases the temporal resolution but causes an error in the velocity measurements because of the lower signal-to-noise ratio (SNR) caused by the lower transmitted power and the lower spatial resolution. In the present study, we evaluated the relationship between the SNR and the transmitted beamwidth by the phantom experiment. The SNR decreased as the beamwidth became wider, and the measurement error increased when SNR was lower than 10 dB. Furthermore, the error factor due to the low spatial resolution more affected the measurement error than that due to the low transmitted power.
AB - A measurement by transmitting ultrasonic non-focusing beams increases the temporal resolution but causes an error in the velocity measurements because of the lower signal-to-noise ratio (SNR) caused by the lower transmitted power and the lower spatial resolution. In the present study, we evaluated the relationship between the SNR and the transmitted beamwidth by the phantom experiment. The SNR decreased as the beamwidth became wider, and the measurement error increased when SNR was lower than 10 dB. Furthermore, the error factor due to the low spatial resolution more affected the measurement error than that due to the low transmitted power.
UR - http://www.scopus.com/inward/record.url?scp=85103833325&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85103833325&partnerID=8YFLogxK
U2 - 10.35848/1347-4065/abef0e
DO - 10.35848/1347-4065/abef0e
M3 - Article
AN - SCOPUS:85103833325
VL - 60
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - SD
M1 - SDDE05
ER -