磁敏感加权成像相位图病灶周围极晕鉴别单纯出血或钙化的价值研究 The Application Value of Indirect Method of Peri-lesion Polar-halo Sign on SWI Phase Image in Differentiating Simple Calcification from Hemorrhage: A Retrospective Study
目的 比较SWI相位图病灶本身信号强度（传统直观）法与病灶周围征象即极晕（间接）法对单纯出血或单纯钙化的诊断效能。 方法 本研究纳入以随访CT为“金标准”（单次病灶CT或复查CT值变化）的单纯钙化灶和单纯出血灶。针对每个病灶分别采用SWI相位图病灶本身信号强度（传统直观）法和病灶周围极晕（间接）法评估。SWI相位图全部转换为右手图后再进行评估。SWI相位图病灶本身信号强度（传统直观）法评估标准：病灶本身呈低、高信号分别代表出血及钙化。病灶周围极晕（间接）法评估标准：低信号两极征或高信号反晕征，认定病变为出血；高信号两极征或低信号反晕征，认定病变为钙化。用科恩Kappa值评估两名观察者评判相位图...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Chinese Journal of Stroke
2022-09-01
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| Series: | Zhongguo cuzhong zazhi |
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| Online Access: | http://www.chinastroke.org.cn/CN/article/openArticlePDF.jsp?id=3635 |