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Abstract #4666

Intracranial Dural Arteriovenous Fistula: Which MR Angiography is the Best for Diagnosis?

Masaaki Hori1, Shigeki Aoki2, Koji Kamagata2, Atsushi Nakanishi2, Keigo Shimoji2, Koichi Asahi2, Haruyoshi Houshito2, Ryohei Kuwatsuru2, Keisuke Sasai2

1Radiology, School of Medicine, Juntendo University, Tokyo, Japan; 2Radiology, School of Medicine, Juntendo University, Tokyo, Japan

The purpose of this exhibit is to present the MR angiography (MRA), including time-of flight MRA, contrast-enhanced time-resolved MRA and non-contrast MR digital subtraction angiography characteristics of dural arterio-venous fistula (DAVF), to illustrate cases where MRAs is valuable in diagnosis, and to understand the limitation and pitfalls of each MRA method. Moreover, we will also discuss the suggestive sequence parameters and imaging option for each MRA in clinical use. In occlusion, complementary combination use of two or more MRA techniques will be helpful for diagnosis of DAVF.