Tianle Wang1,2, Li Zhu2, Chunhong Hu1, Shenchu Gong2, Hongbiao Jiang2, Haitao Chen2, Jia Li3. 1. Department of Radiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China. 2. Department of Radiology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China. 3. Department of Neurology, The Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.
Abstract
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.
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.