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Joint estimation and correction of motion and geometric distortion in segmented arterial spin labeling
Magnetic Resonance in Medicine
Arterial spin labeling allows noninvasive measurement of cerebral blood flow by magnetically labeling inflowing blood, using it as endogenous tracer. Unfortunately, sensitivity to subject motion is high due to the subtractive nature of arterial spin labeling, which is especially problematic if Cartesian segmented 3D gradient and spin echo (GRASE) is applied. Using a 3D GRASE PROPELLER (3DGP) segmentation, retrospective correction of in-plane rigid body motion is possible before finaldoi:10.1002/mrm.29083 pmid:34775637 fatcat:w2a6nm2yfjcevbugaq6654ve44