Abstract #2072

Investigation of Non-Contrast Enhanced Peripheral Artery MR Angiography using AccASL with Double Labeling and Dual AENC Scheme for Realizing Consistent Visualization in Various Blood Flow Conditions

Obara Makoto¹, Takuya Hino², Yasuo Yamashita³, Takeshi Kamitani², Shuhei Shibukawa⁴, Natsuo Konta⁴, Osamu Togao², Masami Yoneyama¹, Yuta Akamine¹, Yu Ueda¹, and Marc Van Cauteren⁵

¹Philips Japan, Ltd., Tokyo, Japan, ²Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Kyushu University, Fukuoka, Japan, ³Division of Radiology, Department of Medical Technology, Kyushu University, Fukuoka, Japan, ⁴Department of Radiology, Tokai University Hospital, Kanagawa, Japan, ⁵Asia Pacific, Philips Healthcare, Tokyo, Japan

Acceleration-Selective Arterial Spin Labeling (AccASL) with double labeling and dual acceleration encoding (AENC) scheme (AccDD) was developed for consistent non-triggered peripheral non-contrast enhanced MR angiography. AccDD requires only 50% longer scan time than conventional single labeling and single AENC scheme and can provide better artery visualization. In addition, veins, with an expected flow slower than arteries, were more visualized using lower AENC acquisition of AccDD, indicating AccDD is sensitive to a wide flow velocity range. Consistent flow visualization in various flow conditions with patients can be expected.

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