The purpose of the study was to evaluate the accuracy of velocity encoded cine MR imaging for the determination of blood flow in patients with coronary artery stenoses. Flow measurements were performed in 18 coronary arteries in 15 patients. We used velocity-encoded k-space segmented gradient echo sequences with a temporal resolution of 110-125 ms. The mean coronary flow in correlation to aortic flow was significantly reduced in patients with severely stenosed arteries. Velocity-encoded MR imaging enables determination of flow in coronary arteries and in correlation of the aortic flow the detection of coronary artery stenoses. Future developments should aim at the improvement of spatial and temporal resolution of the method.
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