Keywords: Flow, Flow, Velocity encoding
Motivation: The optimal velocity encoding limit (VENC) in phase contrast MRI is subject-specific and is currently manually set by the technologist in a time-consuming process.
Goal(s): We propose an inline automatic velocity encoding calibration for 2D phase-contrast flow MRI, which automatically computes and sets the optimal VENC.
Approach: We designed a calibration module to automatically estimate the optimal VENC inline and set it in the subsequent flow measurement. Sixteen healthy volunteers were imaged at 0.55T.
Results: Deployed inline, the calibration module calculated correctly the optimal VENC, mean of 97% of the maximum velocity in the ascending aorta, and automatically applied for subsequent flow sequence.
Impact: Inline automatic velocity encoding calibration ensures the optimal precision in flow measurements and simplifies the acquisition workflow.
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