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Abstract #1867

Pre-Operative Localization of the Artery of Adamkiewicz Using Time-Resolved Magnetic Resonance Angiography at 3.0T

Cory Christopher Duffek1, Thorsten A. Bley1,2, Christopher J. Francois1, Mark L. Schiebler1, Matthew Mell3, Thomas Grist1,4, Scott B. Reeder1

1Radiology, University of Wisconsin, Madison, WI, USA; 2Radiology, University of Freiburg, Freiburg, Germany; 3Surgery, University of Wisconsin, Madison, WI, USA; 4Medical Physics, University of Wisconsin, Madison, WI, USA

Increasingly, data suggest that preservation of the artery of Adamkiewicz (AKA) through reimplantation of intercostal/lumbar arteries at the time of thoracoabdominal and thoracic aortic aneurysm repair plays a key role in the prevention of spinal cord ischemia and paralysis. The purpose of this work is to use time-resolved contrast-enhanced magnetic resonance angiography (TR-MRA) to localize the AKA prior to surgical reimplantation. A retrospective study was performed in 60 patients who underwent pre-operative TR-MRA at 3.0T. The AKA was accurately localized in 88% of cases. TR-MRA at 3.0T is an effective method for presurgical localization of the AKA.