| MR扩散加权成像在脑实质结核中的应用价值 |
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| 引用本文： | 过丽芳,周新华,李宏军,吕岩,谢汝明,贺伟,宁锋钢,.MR扩散加权成像在脑实质结核中的应用价值[J].放射学实践,2011,0(9):918-922. |
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| 作者姓名： | 过丽芳 周新华 李宏军 吕岩 谢汝明 贺伟 宁锋钢 |
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| 作者单位： | 1. 首都医科大学附属北京胸科医院医学影像中心, 北京,101149
2. 首都医科大学附属北京佑安医院放射科, 北京,100069 |
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| 摘 要： | 目的：探讨MR扩散加权成像（DWI）在脑实质结核中的应用价值。方法：搜集脑实质结核病例48例,回顾性分析其DWI表现特点,并测量脑实质结核表观扩散系数（ADC）值。结果：脑实质结核的DWI表现复杂,病灶中心约1/2表现为等信号,余表现为高、低或混杂信号。测得在T1增强扫描上呈均匀强化、环形强化伴实性中心及环形强化伴液性中心的病灶中心平均ADC值分别为（0.92±0.14）×10-3mm2/s、（0.99±0.17）×10-3mm2/s和（2.00±0.55）×10-3mm2/s,环形强化病灶的壁平均ADC值为（1.05±0.19）×10-3mm2/s,病灶周围水肿平均ADC值为（1.18±0.24）×10-3mm2/s,均大于正常脑实质ADC值（0.83±0.09）×10-3mm2/s],差异均具统计学意义（P〈0.05）。结论：脑实质结核病灶扩散不受限,DWI检查及ADC值的测量对脑实质结核的诊断及鉴别诊断具有一定的价值。
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| 关 键 词： | 结核 中枢神经系统 磁共振成像 诊断 鉴别 |
Value of diffusion weighted MRI in diagnosis of tuberculosis within brain parenchyma |
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| GUO Li-fang,ZHOU Xin-hua,LI Hong-jun,et al..Value of diffusion weighted MRI in diagnosis of tuberculosis within brain parenchyma[J].Radiologic Practice,2011,0(9):918-922. |
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| Authors: | GUO Li-fang ZHOU Xin-hua LI Hong-jun |
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| Institution: | GUO Li-fang,ZHOU Xin-hua,LI Hong-jun,et al.Department of Radiology,Beijing chest Hospital affiliated to Capital University of Medical Sciences,101149 Beijing,P.R.China |
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| Abstract: | Objective:To investigate the apllication value of DWI in the diagnosis of tuberculosis within brain parenchyma.Methods:The DWI data of 48 cases with tuberculosis within brain parenchyma proved by pathology or clinical data between 2009 and 2011 were retrospectively studied and their average ADC values were measured.Results:Parenchymal tuberculosis presented some complicated features on DWI.The center of lesion demonstrated isointense signal in half of all cases,hypointense,hyperintense signal or various inh... |
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| Keywords: | Tuberculosis central nervous system Magnetic resonance imaging Diagnosis differential |
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