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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 21:1457-1459 (8 2000)
© 2000 American Society of Neuroradiology

ARTICLE

Intraoperative Sonographic Assessment of Graft Patency during Extracranial-intracranial Bypass

Behnam Badie^,a, Fred T. Lee Jr.^a, Myron A. Pozniak^a and Charles M. Strother^a

^a From the Departments of Neurological Surgery (B.B.) and Radiology (F.T.L., M.A.P., C.M.S.), University of Wisconsin School of Medicine, Madison, WI.

Summary: Extracranial-intracranial (EC-IC) bypass may be necessary to facilitate treatment of unclippable posterior circulation fusiform aneurysms. Although intraoperative digital subtraction angiography (DSA) allows assessment of graft patency, this technique, because of difficulties inherent in performing selective catheterization and angiography in the operating room, has limitations. Duplex sonography, in contrast, is easily performed, and provides information regarding graft patency and blood flow direction during EC-IC bypass procedures. This latter information proved useful in determining the time of parent artery occlusion after two EC-IC bypass procedures performed for treatment of a fusiform midbasilar artery aneurysm.

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