Moyamoya Disease: Evaluation of Postoperative Revascularization Using Multiphase Selective Arterial Spin Labeling MRI

作者：Saida Tsukasa^*; Masumoto Tomohiko; Nakai Yasunobu; Shiigai Masanari; Matsumura Akira; Minami Manabu

来源：Journal of Computer Assisted Tomography, 2012, 36(1): 143-149.

DOI：10.1097/RCT.0b013e31824150dd

• arterial spin labeling
• Moyamoya
• magnetic resonance imaging
• regional perfusion imaging
• bypass surgery

Purpose: The purpose of this study was to evaluate cerebral blood flow through the bypass in operated patients with Moyamoya disease using multiphase selective arterial spin labeling (ASL) technique. %26lt;br%26gt;Materials and Methods: Fifteen surgically treated cerebral hemispheres from 11 patients with Moyamoya disease were included. Selective ASL examinations were performed during the early postoperative period (mean, 5.5 days) on 4 hemispheres and late postoperative period (mean, 332.7 days) on 15 hemispheres. The labeling slab was positioned at the bypassed external carotid artery and 5 slices in each of the 10 sequential phases were acquired using a 3-T scanner. %26lt;br%26gt;Results: Two of 4 early postoperative ASL examinations and all late postoperative ASL examinations demonstrated blood flow through the bypass. The remaining 2 early postoperative ASL examinations showed absence of blood flow; however, blood flow improved on follow-up examinations. %26lt;br%26gt;Conclusion: Multiphase selective ASL technique can provide information about the dynamics of postoperative blood flow through the bypass in Moyamoya disease.

• 出版日期2012-2