Delineation of Draining Veins in Arteriovenous Malformations on Susceptibility Weighted Imaging: Impact of Magnitude Images

Toshiteru Miyasaka¹, Toshiaki Taoka¹, Toshiaki Akashi¹, Kaoru Myouchin¹, Masahiko Sakamoto¹, Katsutoshi Takayama¹, Horoyuki Nakagawa¹, Kimihiko Kichikawa¹

The magnitude image, which is one of the sources of SWI, seems useful to assess the draining vein of AVM, especially on follow-up. This is because, while draining veins of AVM depicted as low signal structure on SWI, the magnitude image depicts draining veins of AVM as high signal, due to higher concentration of oxy-Hb and higher flow speed within draining vein of AVM.