Department of Radiology, School of Medicine, Dicle University, Diyarbakir, Turkey.
Swiss Med Wkly. 2010 Jun 12;140(23-24):335-40. doi: 10.4414/smw.2010.12867.
QUESATIONS UNDER STUDY / PRINCIPLES: This study was designed to compare CT and MR appearances of chronic subdural haematomas as well as CT- and MR-guided measurements of haematoma thicknesses.
CT and MR images of 48 chronic subdural haematomas of 34 patients were reviewed retrospectively. The thickness measurements and imaging characteristics of haematomas were compared.
Levelling was observed in 25% of haematomas, and most of them (60%) had intrahaematomal membranes. All membranes could be delineated by MR imaging, whereas only 27% were defined by CT. Mixed density (52%) and T1 hyperintensity (59%) were commonly observed in membraned haematomas, but the difference was not statistically significant. Haematomas were measured significantly thicker on MR images. All patients had been treated with burr-hole cranio-tomy and irrigation.
MR imaging is more sensitive than CT in determining the size and internal structures of chronic subdural haematomas.
本研究旨在比较慢性硬膜下血肿的 CT 和 MRI 表现，以及 CT 和 MRI 引导的血肿厚度测量。
回顾性分析 34 例 48 例慢性硬膜下血肿患者的 CT 和 MRI 图像。比较血肿的厚度测量值和影像学特征。
25%的血肿呈水平状，其中大多数（60%）有血肿内膜。所有的膜都可以通过 MRI 成像来描绘，而 CT 只能确定 27%的膜。膜内血肿常见混合密度（52%）和 T1 高信号（59%），但差异无统计学意义。MR 图像上测量的血肿厚度明显更大。所有患者均接受颅骨钻孔冲洗术治疗。
MR 成像在确定慢性硬膜下血肿的大小和内部结构方面比 CT 更敏感。
