Fig. 12
From: Cardiovascular magnetic resonance phase contrast imaging
Fourier-velocity-encoded M-mode pulse sequence and pulse wave velocity data. a Scout image with position of M-mode pencil denoted as line. b ECG-gated M-mode pulse sequence, with pencil excitation (box) and Fourier velocity encoding is acquired typically over 64 heartbeats. c Three out of 256 velocity-vs-time waveforms generated along the length of the pencil. Green lines denote best fits to the foot of each waveform. The time of the foot (yellow arrow) is plotted against position in (d). The inverse slope of the best-fit line to the point yields the pulse wave velocity (provided by Dr. Chris Hardy, GE Global Research Center, Niskayuna, NY)