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Abstract #2256

Utility of Susceptibility Weighted Imaging for the Detection of Arteriovenous Shunting in Vascular Malformations of the Brain

Bharathi Dasan Jagadeesan1, Josser E. Delgado Almandoz2, Tammie Benzinger2, Christopher Moran2

1Neuroradiology, Washington University School of Medicine , St Louis, MO, United States; 2Neuroradiology, Washington University School of Medicine, St Louis, MO, United States

We retrospectively evaluated the utility of susceptibility weighted imaging (SWI) in the detection of arterio-venous shunting (AVS) in 47 patients with 66 brain vascular malformations (BVM) identified on digital subtraction angiography (DSA). AVS was considered to be present if there was hyperintensity in a vein adjacent to the BVM. Overall, SWI had a sensitivity of 93%, specificity of 100% and accuracy of 97% for the detection of AVS. In the 13 BVMs associated with hemorrhage, SWI had sensitivity and specificity of 100%. In the 53 BVMs not associated with hemorrhage, SWI had a sensitivity of 92% and specificity of 100%.