Abstract #0361

Robust Visualization of MCA Main Trunk by Improved Acceleration-Selective Arterial Spin Labeling (iAccASL) for Intracranial MR Angiography

Yuta Akamine¹, Makoto Obara¹, Osamu Togao², Shuhei Shibukawa³, Masami Yoneyama¹, Tomoyuki Okuaki⁴, and Marc Van Cauteren⁴

¹Philips Electronics Japan, Shinagawa, Tokyo, Japan, ²Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan, ³Department of Radiology, Tokai University Hospital, Japan, ⁴Asia Pacific, Philips Healthcare, Shinagawa, Tokyo, Japan

Improved acceleration-selective arterial spin labelling (iAccASL) was implemented for Intracranial MR angiography and images were acquired in six healthy volunteers. Additional 180゜refocusing pulses in control module will efficiently suppress spin dispersion and flow voids in strongly accelerating middle cerebral artery (MCA) main arteries. The vessel visualizations of MCA main trunk and peripheral vessels were compared with our previously reported AccASL and conventional time-of-flight (TOF) approach. We demonstrated iAccASL could produce better MCA main trunk visualization (without venous signal) compared with conventional AccASL technique with better peripheral visualization than TOF.

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