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

Ton Tai Pan*, Huihua Kenny Chiang, Bor Ray Lee, Yi Hong Chou, Cheng Deng Kuo

*此作品的通信作者

研究成果: Conference article同行評審

摘要

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.

原文English
頁(從 - 到)1401-1404
頁數4
期刊Proceedings of the IEEE Ultrasonics Symposium
2
DOIs
出版狀態Published - 10月 2001
事件2001 Ultrasonics Symposium - Atlanta, GA, United States
持續時間: 6 10月 200110 10月 2001

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