The Application of Multiple Magnetic Resonance Scanning Techniques in Evaluating the Stability of Intracranial Aneurysms

Pengcheng Ma,1 Yadi Li,2 Yusen Feng,1 Gang Wu,3 Bin Li,4 Haiyan Wu5 1Department of Radiology, Kunming Yan ‘an Hospital, Kunming, 650000, People’s Republic of China; 2Department of Ophthalmology, Affiliated Hospital of Yunnan University, Kunming, 650000, People’s Republic of China; 3Department of Neurology, Kunming Yan ‘an Hospital, Kunming, 650000, People’s Republic of China; 4Department of Neurosurgery, Kunming Yan ‘an Hospital, Kunming, 650000, People’s Republic of China; 5Department of Cardiovascular, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650000, People’s Republic of ChinaCorrespondence: Gang Wu, Tel/Fax +86 0871 632111408, Email yngangwu1126@126.comPurpose: To evaluate the stability of unruptured intracranial aneurysm (UIA) with high-resolution magnetic resonance imaging of the vessel wall (HR-VWI).Materials and Methods: A total of 92 UIA patients were enrolled. After MRA, HR-VWI imaging, the reconstruction of volume rendering (VR) and maximum intensity projection (MIP) were performed to observe the location and size of aneurysms, AR value (ratio of aneurysm height to aneurysmal diameter), SR value (ratio of maximum tumor depth to proximal parent artery diameter), and signal intensity were measured.Results: There were 7 aneurysms with UIA located in the anterior cerebral artery, 31 aneurysms with UIA in the middle cerebral artery, 1 aneurysm with UIA in the posterior cerebral artery, 18 aneurysms with UIA in the anterior communication, 5 aneurysms with UIA in the posterior communication, 34 aneurysms with UIA in the intracranial segment of the internal carotid artery and 3 aneurysms with UIA in the vertebral artery. Among them, 8 patients had more than two multiple aneurysms. The lesion size was 2– 38mm (6.3 ± 5.09). There are 46 aneurysms with wall enhancement: the maximum SR value was 7.03 and the minimum 1.2, and the maximum AR value was 7.5 and the minimum 1.0. Fifty-five aneurysms showed no enhancem