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Abstract #2444

Acceleration-selective Arterial Spin Labeling (AccASL) MR Angiography of Brain Arteriovenous Malformation

Osamu Togao1, Akio Hiwatashi1, Makoto Obara2, Koji Yamashita1, Ryotaro Kamei1, and Hiroshi Honda1

1Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, 2Philips Electronics Japan, Tokyo, Japan

In the present study, we demonstrated the clinical utility of acceleration-selective arterial spin labeling (AccASL) MR angiography (MRA) in brain arteriovenous malformations (AVMs). AccASL-MRA significantly improved the visualization of AVM in comparison with time-of-flight (TOF)-MRA. AccASL-MRA could detect the nidus and draining veins in all patients. In particular, the detection of deep venous drainage by AccASL-MRA led to the accurate Spetzler-Martin grading. AccASL-MRA could serve as a noninvasive tool to evaluate brain AVMs without the use of contrast agents.

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