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Abstract #4454

4D Flow MRI Assessment of Cerebral Blood Flow After Extracranial-Intracranial Bypass

Tetsuro Sekine1, Yasuo Amano1, Ryo Takagi1, Yasuo Murai2, Yuriko Suzuki3, Shinichiro Kumita1

1Radiology, Nippon Medical School, Tokyo, Japan; 2Neurosurgery, Nippon Medical School, Tokyo, Japan; 3Philips Electronics Japan, Tokyo, Japan

4D Flow assessment was examined in 19 patients after extracranial-intracranial bypass. Analysis: 1, Blood flow volume (BFV). 2, Direction of blood flow. 3, Pressure gradient at the M1. The flow direction correlates with the type of bypass. The pressure gradient at M1 correlates with the BFV difference between BFV of contralateral ICA plus BA and BFV of bypass.