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Validation of volume flow measurements with cine phase‐contrast MR imaging for peripheral arterial waveforms
Author(s) -
McCauley Thomas R.,
Pena Constantino S.,
Holland Christy K.,
Price Thomas B.,
Gore John C.
Publication year - 1995
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880050608
Subject(s) - peripheral , imaging phantom , volume (thermodynamics) , nuclear medicine , blood flow , waveform , medicine , doppler effect , flow (mathematics) , biomedical engineering , radiology , physics , mechanics , quantum mechanics , voltage , astronomy
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 = 0.996 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.