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Purpose
Two‐dimensional selective excitation (2DRF) allows shortening 4D flow scan times by reducing the FOV, but the longer 2DRF pulse duration decreases the temporal resolution, yielding underestimated peak flow values. Multiple k‐space lines per cardiac phase, nl ≥ 2, are commonly applied in 4D flow MRI to shorten the inherent long scan times. We demonstrate that 2DRF 4D flow with nl ≥ 2 can be...
Purpose
4D flow MRI permits to quantify non‐invasively time‐dependent velocity vector fields, but it demands long acquisition times. 2D‐selective excitation allows to accelerate the acquisition by reducing the FOV in both phase encoding directions. In this study, we investigate 2D‐selective excitation with reduced FOV imaging for fast 4D flow imaging while obtaining correct velocity quantification...
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