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Phase‐contrast pulsatility measurements: Preliminary results in normal and arteriosclerotic iliofemoral arteries work in progress
Author(s) -
Krug Barbara,
Kugel Harald,
Harnischmacher Urs,
Heindel Walter,
Schmidt Rainer,
Krings Friedrich
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.1880050216
Subject(s) - phase contrast microscopy , medicine , pulsatile flow , stenosis , arteriosclerotic heart disease , cardiac cycle , pulse (music) , cardiology , coronary arteries , flow (mathematics) , biomedical engineering , radiology , artery , mathematics , physics , geometry , detector , optics
Magnetic resonance (MR) flow measurements were obtained in six healthy volunteers and 30 patients with arteriosclerotic disease with a 1.5‐T imager and a pulse sequence for flow quantification based on flow‐induced phase shifts. The iliac arteries were investigated in eight and the femoral arteries in 28 subjects. A trigger pulse, followed by the acquisition of 30 evenly distributed data sets, was applied every second heartbeat, thus eliminating any acquisition gap in a full heart cycle. For quantitative analysis, flow velocity was plotted as a function of time. Systolic acceleration, postsystolic deceleration, and pulsatility of flow were calculated and compared with stenosis grades determined from recent intraarterial digital subtraction angiograms. The flattening of the temporal flow patterns correlated with local severity of vascular occlusive disease.