Protocol for Performing Extracranial Cerebrovascular ...

Acquire three additional 2D measurements in . mid-systole. to include the . aortic root, sinotubular junction, and ascending aorta (for these measurements, the aortic root should be positioned perpendicular to the beam and Zoom or RES modes should be implemented). The . left atrium . will be measured in . end-systole ................
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