Matsumura K, Matsuda M, Handa J, Todo G
Department of Neurosurgery, Shiga University of Medical Science, Ohtsu, Japan.
Surg Neurol. 1990 Aug;34(2):71-8. doi: 10.1016/0090-3019(90)90100-4.
Magnetic resonance studies of 27 consecutive preoperative and 33 postoperative patients with cerebral aneurysm and subarachnoid hemorrhage were reviewed. Magnetic resonance imaging using a 0.5- or 0.22-Tesla unit was at least as accurate as computed tomography scan for detection of acute subarachnoid hemorrhage. Magnetic resonance imaging was superior to computed tomography scan for demonstrating blood in the ventricles or posterior fossa subarachnoid space, transependymal migration of the cerebrospinal fluid, and several kinds of iatrogenic intracranial pathologies in postoperative patients. Ischemic lesions, particularly fresh lesions caused by delayed cerebral vasospasm, were much better shown on magnetic resonance imaging than on computed tomography scan. Nonferromagnetic Sugita clips caused significant artifacts, but the area of artifacts was consistently smaller, and a reasonable evaluation of structures relatively closer to the clip was possible with magnetic resonance imaging rather than computed tomography scan.
回顾了27例连续的术前和33例术后脑动脉瘤和蛛网膜下腔出血患者的磁共振研究。使用0.5或0.22特斯拉装置的磁共振成像在检测急性蛛网膜下腔出血方面至少与计算机断层扫描一样准确。在显示脑室或后颅窝蛛网膜下腔的血液、脑脊液的跨室管膜迁移以及术后患者的几种医源性颅内病变方面，磁共振成像优于计算机断层扫描。缺血性病变，尤其是由延迟性脑血管痉挛引起的新鲜病变，在磁共振成像上比在计算机断层扫描上显示得要好得多。非铁磁性的杉田夹会产生明显的伪影，但伪影区域始终较小，与计算机断层扫描相比，磁共振成像能够对相对靠近夹子的结构进行合理评估。
