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Fig. 7 | Journal of Cardiovascular Magnetic Resonance

Fig. 7

From: Dynamic quantitative nonenhanced magnetic resonance angiography of the abdominal aorta and lower extremities using cine fast interrupted steady-state in combination with arterial spin labeling: a feasibility study

Fig. 7

69-year-old male with right leg claudication secondary to occlusion of the proximal right superficial femoral artery. a CTA demonstrates heavily calcified atherosclerotic disease. b QISS MRA. Red arrow = incidental moderate stenosis of the left common iliac artery (CIA). c Axial slice from CTA (top) and QISS MRA (bottom) shows the left CIA stenosis. d Coronal cFASL shows a similar rate of progression of the labeled bolus on the two sides despite the presence of the left-sided stenosis (red arrows). This finding is suggestive that the stenosis is not hemodynamically significant. The left CIA plaque is visible as a partial filling defect in the labeled bolus of arterial blood. e Thin-slice (3-mm) axial cFASL at the level of the stenosis shows the arterial lumen (white) in high contrast to the plaque (dark). f Axial 2DPC at the level of the stenosis shows flow velocity (top) and bulk flow (bottom) for the right (red) and left (green) vessels. 2DPC confirms that the stenosis is not hemodynamically significant since bulk flow is approximately equal between the two sides during the systolic phase of the cardiac cycle, despite the increased peak flow velocity within the stenosis

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