Phase contrast MRI: how it measures flow
A sequence that tells you direction and speed of flow, not just that there is flow. The velocity setting decides everything.
Phase contrast
Signal depends on velocity along the encoded direction; stationary tissue is cancelled.
Venography, CSF flow, and measurement of flow and velocity in cardiac imaging.
The VENC must be just above the highest expected velocity: too low causes aliasing, too high loses sensitivity.
This page is one entry from the MRI Technologist Reference
The full reference has 31 protocols, 9 dynamic study timelines, 19 artifacts, 16 scanner problems and 15 safety topics, as a PDF in English and Arabic plus an interactive tool.
Educational reference. It does not replace your site protocols, the radiologist's instructions, the MR safety officer, or the manufacturer's instructions for any implant, device or contrast agent. Parameter values are typical starting points at 1.5 T and must be adapted to the scanner, coil and patient.