Diffusion-weighted magnetic resonance imaging in patients with subarachnoid hemorrhage
Diffusion-weighted magnetic resonance imaging in patients with subarachnoid hemorrhage
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DOI：
10.1097/00006123-200204000-00010
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发表时间：
2002-04-01
期刊：
影响因子：
4.8
通讯作者：
Shimosegawa, E
中科院分区：
文献类型：
--
作者：
Hadeishi, H;Suzuki, A;Shimosegawa, E
目的：目的：探讨急性蛛网膜下腔出血（SAN）所致直接脑损伤的发生及分布规律。方法：对32例SAH患者采用1.5T全身MRI及平面回波成像系统进行CT及磁共振成像（DWI）检查。在所有的情况下，计算机断层扫描和磁共振成像扫描，获得在入院时，血管造影和手术intervention.Results：DWI显示在任何低级别SAH患者无异常。然而，诊断为低级别SAH（世界神经外科学会联合会4级和5级）的7例患者中有5例（71%）在DWI上显示多发性斑片状局灶性异常。入院时获得的计算机断层扫描未能清楚地显示DWI显示的所有脑损伤区域。这些病变位于幕上脑实质，而不是在丘脑，基底节，或小脑半球。这些多个广泛的病变表现出层状参与的大脑皮层与网站的破裂aneurysm.CONCLUSION：DWI显示广泛的多灶性病变在大脑皮层的急性分级较差SAH患者。DWI提供了直接归因于SAH的所有脑损伤区域的准确图像。
OBJECTIVE: To evaluate the occurrence and distribution of direct brain injury caused by acute subarachnoid hemorrhage (SAN) by the use of magnetic resonance imaging.METHODS: Computed tomography and magnetic resonance imaging, including diffusion-weighted imaging (DWI), were performed in 32 patients with SAH by use of a 1.5-T whole-body superconductive scanner equipped with an echo planar imaging system. In all cases, computed tomographic and magnetic resonance imaging scans were obtained at the time of admission, before angiography and surgical intervention.RESULTS: No abnormalities were revealed by DWI in any of the low-grade SAH patients. However, five (71%) of seven patients diagnosed as having poor-grade SAH (World Federation of Neurosurgical Societies Grades 4 and 5) displayed multiple, patchy focal abnormalities on DWI. Computed tomographic scans obtained at admission failed to clearly demonstrate all of the damaged areas of the brain that were visualized by DWI. These lesions were located in supratentorial cerebral parenchyma, but not in the thalamus, basal ganglia, or cerebellar hemisphere. These multiple widespread lesions exhibiting laminar involvement of the cerebral cortex were not associated with the site of the ruptured aneurysm.CONCLUSION: DWI revealed widespread multifocal lesions in the cerebral cortex of acute poor-grade SAH patients. DWI provides accurate images of all areas of brain damage directly attributable to SAH.