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Abstract #1765

Accelerated Territorial ASL Based on Shared Rotating Control Acquisition: Validation Observer Study

Hironori Kamano1, Takashi Yoshiura1, Ivan Zimine2, Akio Hiwatashi1, Koji Yamashita1, Yukihisa Takayama1, Eiki Nagao1, Hiroshi Honda1

1Department of Clinical Radiology, Kyushu University, Fukuoka, Japan; 2Philips Electronics Japan

Use of shared rotating control acquisition has been reported to substantially shorten total acquisition time in territorial ASL, while it may result in inaccurate estimate of M from each feeding vessels due to incomplete compensation of magnetization transfer effects. In order to validate this technique in actual clinical interpretation, we performed an observer test. Results indicated an excellent over all agreement between the shared rotating control and normal control acquisitions. There was a tendency that, in the shared rotating control method, the territorial information may be less reliable in the territories of the posterior cerebral artery.