Abstract #3258

Non-Contrast Enhanced Three-Dimensional MR Digital Subtraction Angiography at a Temporal Resolution of 100 Msec.

Masaaki Hori^1,2, Nobuyuki Shiraga², Yasushi Watanabe³, Shigeki Aoki⁴, Sachiko Isono⁵, Masao Yui⁶, Tsutomu Araki¹

¹University of Yamanashi, Chuou, Yamanashi, Japan; ²Radiology, Toho University Omori Medical Center, Ota, Tokyo, Japan; ³University of Tokyo, Japan; ⁴Radiology, School of Medicine, Juntendo University, Japan; ⁵Toshiba Medical Systems, Japan; ⁶MRI Development dept, Toshiba Medical Systems, Japan

Purpose of this study is to estimate the value of Time-Spatial Labeling Inversion Pulse (Time-SLIP) magnetic resonance digital subtraction angiography (MRDSA) in evaluation of intracranial arteries at 1.5T for clinical use. As results, time-resolved 3D MRDSA without contrast material were clearly visualized the branches of the cranial arteries (P<0.01), compared with 3D TOF-MRA. Moreover, MRA containing hemodynamic information from only selected internal carotid artery was able to be obtained. Time-SLIP 3D MRDSA provides hemodynamic information of the circle of Willis, and it may play an important role in assessing cranial arteries in clinical use.