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Abstract #1354

Depicting ability of 7 Tesla MRA for lenticulostriate arteries: practical assessment based on intraoperative video of aneurysm neck clipping

Wataru Yanagihara1, Takahiro Koji1, Yoshitaka Kubo1, Yosuke Akamatsu1, Makoto Sasaki2, Tsukasa Wada1, Shunrou Fujiwara1, and Kuniaki Ogasawara1
1Department of Neurosurgery, Iwate Medical University School of Medicine, Shiwa, Japan, 2Division of Ultrahigh Field MRI, Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Shiwa, Japan

Synopsis

Keywords: Blood Vessels, Neuro

Motivation: To clear the depicting ability for the lenticulostriate arteries at 7 Tesla in patients with unruptured the middle cerebral artery aneurysm.

Goal(s): MRA at 7 Tesla can depict the lenticulostriate arteries more than that at 3 Tesla in assessment using the intraoperative video.

Approach: Comparison of accuracy of identification of LSAs at standard 3D TOF imaging at 3T, standard 3D TOF imaging at 7Tand high-resolution 3D TOF at 7T, using the findings of intraoperative video as the reference.

Results: LSAs were identified more accurately by HR7T 3D TOF than by S3T 3D TOF.

Impact: In patients with an unruptured MCA aneurysm, LSAs were identified more accurately by HR7T 3D TOF than by S3T 3D TOF; however, the ability to depict the vessels could depend on the resolution rather than the signal-to-noise ratio.

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