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

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.