Evaluation of the effect of machine settings on quantitative three‐dimensional power Doppler angiography: an <i>in‐vitro</i> flow phantom experiment

Abstract

The VI, FI and VFI are all affected significantly by variations in power Doppler settings and by the speed of acquisition. The gain and signal power have the greatest effect on the power Doppler signal, followed closely by the PRF. The other settings and speed of acquisition also influence the signal, but to a much lesser degree. It is essential to maintain Doppler settings if any meaningful comparisons are to be made within and between subjects.