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• W2434606319 abstract "Abstract This study sought to determine whether the permeability related parameter K trans , derived from computed tomography perfusion (CTP) imaging, can predict hemorrhagic transformation (HT) in patients with acute ischemic stroke who receive intra-arterial thrombolysis. Data from patients meeting the criterion were examined. CTP was performed and K trans maps were used to assess the permeability values in HT and non-HT regions. A receiver operating characteristic (ROC) curve was calculated, showing the sensitivity and specificity of K trans for predicting HT risk. Composite images were produced to illustrate the spatial correlations among perfusion, permeability changes and HT. This study examined 41 patients. Twenty-six patients had hemorrhagic infarction and 15 had parenchymal hemorrhage. The mean K trans value in HT regions was significantly lower than that in the non-HT regions (0.26 ± 0.21/min vs. 0.78 ± 0.64/min; P < 0.001). The ROC curve analysis identified an optimal cutoff value of 0.334/min for K trans to predict HT risk. Composite images suggested ischemic regions with low permeability, or the mismatch area of low perfusion and high permeability, more likely have HT. HT regions after intra-arterial thrombolysis had lower permeability values on K trans maps. The mismatch area of lower perfusion and higher permeability are more likely to develop HT." @default.
• W2434606319 created "2016-06-24" @default.
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• W2434606319 date "2016-06-15" @default.
• W2434606319 modified "2023-09-27" @default.
• W2434606319 title "Mismatch of Low Perfusion and High Permeability Predicts Hemorrhagic Transformation Region in Acute Ischemic Stroke Patients Treated with Intra-arterial Thrombolysis" @default.
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• W2434606319 doi "https://doi.org/10.1038/srep27950" @default.
• W2434606319 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4908417" @default.
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