Validation of volume flow measurements with cine phase-contrast MR imaging for peripheral arterial waveforms.
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.
McCauley
T R
TR
Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, CT, USA.
Peña
C S
CS
Holland
C K
CK
Price
T B
TB
Gore
J C
JC
D000328:Adult; D001783:Blood Flow Velocity / Q000502:physiology*; D001810:Blood Volume / Q000502:physiology*; D005263:Femoral Artery / Q000502:physiology; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted; D019028:Magnetic Resonance Imaging, Cine / Q000295:instrumentation*; D008297:Male; D008955:Models, Cardiovascular; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D012016:Reference Values; D018616:Ultrasonography, Doppler, Duplex; D014655:Vascular Resistance / Q000502:physiology