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ASL

ASL (Arterial Spin Labeling) is an MR technique using the water in arterial blood as an endogenous contrast agent to evaluate perfusion non-invasively. ASL is available as a 2D EPI sequence (ASL 2D) and as a 3D GRASE sequence (ASL 3D). ASL 2D includes inline calculation of relCBF maps for a quantitative evaluation of perfusion. ASL 3D includes inline calculation of perfusion-weighted maps for a qualitative evaluation of perfusion.

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