Technologist Track Session 02: CMR How To (2018)-Vessel and valve flow imaging

Video Transcription

Video Summary

The speaker, a radiographer, explains phase contrast MRI flow imaging for technologists. It measures blood velocity and volume using bipolar gradients, producing phase and magnitude images. Key applications include valve stenosis/regurgitation, ventricular outflow obstruction, congenital defects, shunts, and aortic coarctation. The talk covers planning planes for through-plane and in-plane flow, choosing the correct VENC to avoid aliasing, and positioning scans perpendicular to flow. It also discusses shimming, mixed lesions, prosthetic valves, arrhythmia, motion, and the importance of documenting technical issues during scanning.

Keywords

phase contrast MRI

flow imaging

blood velocity

VENC aliasing

cardiac shunts