Figure 28

Demonstrates assessment of pulse wave velocity. Phase velocity acquisition across a vessel is undertaken at points 1 and 2 and the distance between them is measured. Slice prescription for the proximal pulmonary arteries and the aorta are both demonstrated. The descending and ascending aortic locations are obtained within a single slice. Transit time is defined by the difference in arrival time of the flow wave at points 1 and 2 and divided by the distance to give pulse wave velocity. (MPA main pulmonary artery; LPA left pulmonary artery; RPA right pulmonary artery). Reproduced with permission from Cardiovascular Magnetic Resonance, Second edition, Manning WJ and Pennell DJ.