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MRI coronary angiography |
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MRI coronary angiography MRCA Imaging A form of MR angiography used to ID clinically important coronary artery stenoses; with standard MRI spin-echo and gradient-echo techniques, coronary arterial visualization is suboptimal and limited
to the proximal segments, apparently related to respiratory and cardiac movements; in MRCA, the image is obtained while holding the breath, reducing the respiratory 'noise'; cardiac movement is minimized by obtaining the image during
mid-diastole–a point of the cardiac cycle with relative diastasis; the temporal resolution is minimized by using
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