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Background Two-dimensional (2D) spatially selective radiofrequency (RF) pulses may be used to excite a restricted volume of tissue. By incorporating a “pencil beam” 2D pulse into a T2-Prep module, one may create a “2D-T2-Prep” that combines T2-weighting with outer volume suppression. This may be of particular benefit to parallel imaging techniques, where artefacts typically originate from residual foldover signal. By suppressing signal from outside the targeted region of interest (ROI), image quality may thus improve. We present numerical simulations, phantom validation, and in vivo MRA of the right coronary artery to test this hypothesis.

Improved image quality in GRAPPA-accelerated coronary MRA using an outer volume suppressing 2D-T2-Prep