急性缺血性脑卒中患者中，磁敏感加权成像对缺血半暗带的诊断价值。
The diagnostic value of susceptibility-weighted imaging for ischemic penumbra in patients with acute ischemic stroke.
作者信息
Wang Tianle, Zhu Li, Hu Chunhong, Gong Shenchu, Jiang Hongbiao, Chen Haitao, Li Jia
机构信息
Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.
Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.
出版信息
Technol Health Care. 2017 Jul 20;25(S1):449-457. doi: 10.3233/THC-171348.
BACKGROUND
The ischemia penumbra area is not easy to be detected accurately using noninvasive imaging methods.
OBJECTIVE
We aim to assess the diagnostic value of susceptibility-weighted imaging (SWI) for ischemic penumbra in patients with acute ischemic stroke.
METHODS
A retrospective analysis was carried out in 47 patients with ischemic stroke involving the middle cerebral artery. Mean transit time (MTT), time to peak, relative cerebral blood flow, and relative cerebral blood volume maps were created after image processing.
RESULTS
No significant difference was found in the mismatch between the SWI and diffusion-weighted imaging (SWI-DWI) or in the MTT-DWI mismatch scores (P= 0.056, Kappa = 0.864).
CONCLUSIONS
SWI provides information comparable to PWI and, thus, could serve as a reliable magnetic resonance technique for assessing ischemic penumbrae.
背景
使用非侵入性成像方法难以准确检测缺血半暗带区域。
目的
我们旨在评估磁敏感加权成像（SWI）对急性缺血性脑卒中患者缺血半暗带的诊断价值。
方法
对47例累及大脑中动脉的缺血性脑卒中患者进行回顾性分析。图像处理后生成平均通过时间（MTT）、达峰时间、相对脑血流量和相对脑血容量图。
结果
SWI与弥散加权成像（SWI-DWI）之间的不匹配或MTT-DWI不匹配评分无显著差异（P = 0.056，Kappa = 0.864）。
结论
SWI提供的信息与灌注加权成像相当，因此可作为评估缺血半暗带的可靠磁共振技术。
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