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Abstract #4068

Selective Arterial Spin Labeling After Extra-Intracranial Bypass Surgery

Simon Konstandin1, Patrick Michael Heiler1, Johann Scharf2, Lothar Rudi Schad1

1Computer Assisted Clinical Medicine, Heidelberg University, Mannheim, Germany; 2Department of Neuroradiology, Heidelberg University, Mannheim, Germany

Perfusion originating from the summed supply of all brain feeding arteries is commonly assessed. In this study, a slice selective inversion was compared to a multidimensional RF pulse to label only the artery of interest. By tagging the bypass of a patient, perfusion signal only exists in the according hemisphere of the brain. The perfusion measured by these SASL methods is consistent with a standard angiography. Therefore, these presented MR techniques may in part replace the assessment of revascularization success by conventional angiography.