颅底脊索瘤的CT和核磁共振成像影像分析

发布时间：2018-08-30 14:20

【摘要】：目的:将CT与核磁共振成像应用于颅底脊索瘤诊断当中,分析其影响特点及诊断价值。方法:对我院收治的38例颅底脊索瘤患者进行研究,选择同期收治的21例侵犯颅底鼻咽癌者与16例垂体瘤者为参照组,两组均进行CT与MR检查,其中17例颅底脊索瘤患者实施核磁共振多层面重建,观察其CT与MR影像表现。结果:经CT扫描可见5例患者瘤内有分散、点状钙化。29例患者肿块边界模糊,9例患者肿块边界清晰,周边可见肿瘤包膜。经MR检查肿块边界清晰,轮廓为叶状,T1WI可见均匀低强度信号与混杂信号,T2WI可见高强度信号,且信号越强使肿瘤强化更为显著。研究组T2WI信号与参照组相比,明显更高(P0.05),两组T1WI信号强度差异不明显(P0.05)。结论:T2WI高强度信号为颅底脊索瘤的重要MR征象,MR在诊断颅底脊索瘤方面价值较高,可为临床手术治疗提供有效参考。
[Abstract]:Objective: to apply CT and MRI in the diagnosis of chordoma of skull base. Methods: 38 patients with chordoma of skull base were studied. 21 cases of nasopharyngeal carcinoma of skull base and 16 cases of pituitary adenoma were selected as control group. CT and MR were performed in both groups. Seventeen patients with chordoma of the skull base were reconstructed with MRI and their CT and MR images were observed. Results: by CT scan, 5 cases were found to be dispersed in tumor, 29 cases were calcified, 9 cases had clear margin of tumor, and tumor capsule was seen around them. The boundary of the tumor was clear by MR. The contour of the tumor was even low intensity signal on T1WI and high intensity signal on mixed signal T2WI. The stronger the signal was, the more obvious the enhancement of tumor was. The T2WI signal of the study group was significantly higher than that of the control group (P0.05), and the T1WI signal intensity of the two groups was not significantly different (P0.05). Conclusion the high intensity signal on T2WI is an important MR sign of chordoma of the skull base. Mr imaging has a high value in the diagnosis of chordoma of the skull base, and it can provide an effective reference for the clinical treatment of chordoma.
【作者单位】：山东省临沂蒙阴县人民医院
【分类号】：R445.2;R730.44;R739.4

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