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

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.