VALIDATION OF VOLUME FLOW MEASUREMENTS WITH CINE PHASE-CONTRAST MR-IMAGING FOR PERIPHERAL ARTERIAL WAVE-FORMS

A now phantom was used to study MR volume now measurements for monopha sic and triphasic waveforms over the now range expected in peripheral arteries at rest and with exercise (2-24 mL/sec, n = 50). The improvem ent in accuracy with phase-correction image processing to eliminate er rors caused by eddy currents was measured, Volume now estimates with D oppler sonography were also measured, MR volume now measurements corre lated with volume collection with r = .996 and mean error = 4.6%, Phas e-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 provide s accurate estimates of volume blood now for waveforms and now ranges expected in peripheral arteries.