Abstract #2988

Preoperative Evaluation of the Origins of the Perforating Arteries Using 7T MRI in Patients with Unruptured Aneurysms

Takahiro Koji¹, Yoshitaka Kubo¹, Toshiyuki Murakami¹, Takamasa Nanba¹, Makoto Sasaki², Akira Ogawa¹, Kuniaki Ogasawara¹

¹Department of Neurosurgery, Iwate Medical University, Morioka, Iwate, Japan; ²Division of Ultrahigh Field MRI, Institute for Biomedical Sciences, Iwate Medical University, Morioka, Iwate, Japan

This study investigated preoperative evaluation of the origins of the perforating arteries using 7-Tesla magnetic resonance image (7T MRI) in patients with unruptured aneurysms. Six patients underwent 3D time-of-flight spoiled gradient echo MRA (3D-TOF MRA) at 7T MR imager before surgery. In three of these 6 patients, relationship of the origins of the perforating arteries to the aneurysms was clearly displayed on the MRA. The relationship on the MRA corresponded with findings of intraoperative view through microscope. 3D-TOF MRA on 7T MR imager can evaluate relationship of the origins of the perforating arteries to the aneurysms.