IEICE TRANSACTIONS on Information
Effects of Nonuniform Acoustic Fields in Vessels and Blood Velocity Profiles on Doppler Power Spectrum and Mean Blood Velocity
Summary :
This paper presents a detailed simulation method to estimate Doppler power spectrum and mean blood velocity using real CW Doppler transducers with twin-crystal arrangement. The method is based on dividing the sample volume into small cells and using the statistics of the Doppler power spectrum with the same Doppler shift frequency, which predicts the mean blood velocity. The acoustic fields of semicircular transducers across blood vessels were calculated and the effects of acoustical and physiological factors on Doppler power spectrum and mean blood velocity were analyzed. Results show that nonuniformity of the acoustic field of the ultrasonic beam in the blood vessel and blood velocity profiles significantly affect Doppler power spectrum and mean blood velocity. However, Doppler angle, vessel depth, and sample volume length are not sensitive functions. Comparisons between simulation and experimental results illustrated a good agreement for parabolic flow profile. These results will contribute to a better understanding of Doppler power spectrum and mean blood velocity in medical ultrasound diagnostics.
- Publication
- IEICE TRANSACTIONS on Information Vol.E85-D No.9 pp.1443-1451
- Publication Date
- 2002/09/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Medical Engineering
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Dali ZHANG, Yoji HIRAO, Yohsuke KINOUCHI, Hisao YAMAGUCHI, Kazuo YOSHIZAKI, "Effects of Nonuniform Acoustic Fields in Vessels and Blood Velocity Profiles on Doppler Power Spectrum and Mean Blood Velocity" in IEICE TRANSACTIONS on Information,
vol. E85-D, no. 9, pp. 1443-1451, September 2002, doi: .
Abstract: This paper presents a detailed simulation method to estimate Doppler power spectrum and mean blood velocity using real CW Doppler transducers with twin-crystal arrangement. The method is based on dividing the sample volume into small cells and using the statistics of the Doppler power spectrum with the same Doppler shift frequency, which predicts the mean blood velocity. The acoustic fields of semicircular transducers across blood vessels were calculated and the effects of acoustical and physiological factors on Doppler power spectrum and mean blood velocity were analyzed. Results show that nonuniformity of the acoustic field of the ultrasonic beam in the blood vessel and blood velocity profiles significantly affect Doppler power spectrum and mean blood velocity. However, Doppler angle, vessel depth, and sample volume length are not sensitive functions. Comparisons between simulation and experimental results illustrated a good agreement for parabolic flow profile. These results will contribute to a better understanding of Doppler power spectrum and mean blood velocity in medical ultrasound diagnostics.
URL: https://global.ieice.org/en_transactions/information/10.1587/e85-d_9_1443/_p
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@ARTICLE{e85-d_9_1443,
author={Dali ZHANG, Yoji HIRAO, Yohsuke KINOUCHI, Hisao YAMAGUCHI, Kazuo YOSHIZAKI, },
journal={IEICE TRANSACTIONS on Information},
title={Effects of Nonuniform Acoustic Fields in Vessels and Blood Velocity Profiles on Doppler Power Spectrum and Mean Blood Velocity},
year={2002},
volume={E85-D},
number={9},
pages={1443-1451},
abstract={This paper presents a detailed simulation method to estimate Doppler power spectrum and mean blood velocity using real CW Doppler transducers with twin-crystal arrangement. The method is based on dividing the sample volume into small cells and using the statistics of the Doppler power spectrum with the same Doppler shift frequency, which predicts the mean blood velocity. The acoustic fields of semicircular transducers across blood vessels were calculated and the effects of acoustical and physiological factors on Doppler power spectrum and mean blood velocity were analyzed. Results show that nonuniformity of the acoustic field of the ultrasonic beam in the blood vessel and blood velocity profiles significantly affect Doppler power spectrum and mean blood velocity. However, Doppler angle, vessel depth, and sample volume length are not sensitive functions. Comparisons between simulation and experimental results illustrated a good agreement for parabolic flow profile. These results will contribute to a better understanding of Doppler power spectrum and mean blood velocity in medical ultrasound diagnostics.},
keywords={},
doi={},
ISSN={},
month={September},}
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TY - JOUR
TI - Effects of Nonuniform Acoustic Fields in Vessels and Blood Velocity Profiles on Doppler Power Spectrum and Mean Blood Velocity
T2 - IEICE TRANSACTIONS on Information
SP - 1443
EP - 1451
AU - Dali ZHANG
AU - Yoji HIRAO
AU - Yohsuke KINOUCHI
AU - Hisao YAMAGUCHI
AU - Kazuo YOSHIZAKI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E85-D
IS - 9
JA - IEICE TRANSACTIONS on Information
Y1 - September 2002
AB - This paper presents a detailed simulation method to estimate Doppler power spectrum and mean blood velocity using real CW Doppler transducers with twin-crystal arrangement. The method is based on dividing the sample volume into small cells and using the statistics of the Doppler power spectrum with the same Doppler shift frequency, which predicts the mean blood velocity. The acoustic fields of semicircular transducers across blood vessels were calculated and the effects of acoustical and physiological factors on Doppler power spectrum and mean blood velocity were analyzed. Results show that nonuniformity of the acoustic field of the ultrasonic beam in the blood vessel and blood velocity profiles significantly affect Doppler power spectrum and mean blood velocity. However, Doppler angle, vessel depth, and sample volume length are not sensitive functions. Comparisons between simulation and experimental results illustrated a good agreement for parabolic flow profile. These results will contribute to a better understanding of Doppler power spectrum and mean blood velocity in medical ultrasound diagnostics.
ER -
English
