Validation of volume flow measurements with cine phase-contrast MR imaging for peripheral arterial waveforms.
J Magn Reson Imaging
; 5(6): 663-8, 1995.
Article
em En
| MEDLINE
| ID: mdl-8748483
ABSTRACT
A flow phantom was used to study MR volume flow measurements for monophasic and triphasic waveforms over the flow range expected in peripheral arteries at rest and with exercise (2-24 mL/sec, n = 50). The improvement in accuracy with phase-correction image processing to eliminate errors caused by eddy currents was measured. Volume flow estimates with Doppler sonography were also measured. MR volume flow measurements correlated with volume collection with r = .996 and mean error = 4.6%. Phase-correction processing decreased mean error from 12.6% to 4.6% (P < .001, paired t-test). Doppler sonography had a higher mean error of 10.3% (P < .001, unpaired t-test). Cine phase-contrast MR imaging provides accurate estimates of volume blood flow for waveforms and flow ranges expected in peripheral arteries.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Ano de publicação:
1995
Tipo de documento:
Article