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On the spectral properties of Doppler thread phantoms
Journal article   Peer reviewed

On the spectral properties of Doppler thread phantoms

D. Cathignol, K. Dickerson, V.L. Newhouse, P. Faure and J.-Y. Chapelon
Ultrasound in medicine & biology, v 20(7), pp 601-610
1994
PMID: 7810020

Abstract

Acoustic Backscattering Blood flow Doppler Doppler phantom Doppler spectrum Doppler transverse String phantom Thread phantom Ultrasound Ultrasound Doppler bandwidth Velocity measurement
It is shown that some of the threads used in Doppler phantoms have a repetitive structure which leads to peaks in the angular distribution of the backscattered power at beam axis-to-flow angles of θ = 90° and approximately θ = 70°. This nonuniform scattering does not significantly interfere with modelling the Doppler spectrum peak as a function of velocity and beam-to-thread angle, but makes it impossible to model the spectral width as a function of these parameters. A new plaited structure is described which has a periodicity too small to lead to subsidiary reflection peaks, and which has a more uniform backscattering profile than the other threads studied.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Acoustics
Radiology, Nuclear Medicine & Medical Imaging
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