TY - JOUR

T1 - Spectral doppler flow velocity and doppler angle estimations for small vessel by large sample volume

AU - Pan, Ton Tai

AU - Chiang, Huihua Kenny

AU - Lee, Bor Ray

AU - Chou, Yi Hong

AU - Kuo, Cheng Deng

PY - 2001/10

Y1 - 2001/10

N2 - In this paper, we present a Doppler angle and flow velocity estimation method for small vessels by using a large sample volume length. We use the mode frequency, fd, and the -3dB maximum frequency, fmax, to calculate the Doppler angle and flow velocity while keeping the sample volume length larger than the beam path length across the blood vessel. We have successfully implemented this approach in a clinical ultrasound system for measuring a constant and pulsatile flow generated by a UHDC flow phantom in a 4 mm polyethylene tube between 50° and 80° Doppler angle. The standard deviation of the estimated flow velocity is 3.4 cm/s (about 11%) for a constant flow with 23.8 cm/s flow velocity, and is 6 cm/s (about 15%) for a pulsatile flow with 35.8 cm/s peak flow velocity.

AB - In this paper, we present a Doppler angle and flow velocity estimation method for small vessels by using a large sample volume length. We use the mode frequency, fd, and the -3dB maximum frequency, fmax, to calculate the Doppler angle and flow velocity while keeping the sample volume length larger than the beam path length across the blood vessel. We have successfully implemented this approach in a clinical ultrasound system for measuring a constant and pulsatile flow generated by a UHDC flow phantom in a 4 mm polyethylene tube between 50° and 80° Doppler angle. The standard deviation of the estimated flow velocity is 3.4 cm/s (about 11%) for a constant flow with 23.8 cm/s flow velocity, and is 6 cm/s (about 15%) for a pulsatile flow with 35.8 cm/s peak flow velocity.

UR - http://www.scopus.com/inward/record.url?scp=0035729063&partnerID=8YFLogxK

U2 - 10.1109/ULTSYM.2001.991983

DO - 10.1109/ULTSYM.2001.991983

M3 - Conference article

AN - SCOPUS:0035729063

VL - 2

SP - 1401

EP - 1404

JO - Proceedings of the IEEE Ultrasonics Symposium

JF - Proceedings of the IEEE Ultrasonics Symposium

SN - 1051-0117

Y2 - 6 October 2001 through 10 October 2001

ER -