胼胝体非出血性挫伤的MRI诊断(附四例报告)
作者：全冠民 胡昭兰 叶录安 任延玉
单位：230011 安徽省合肥市第二人民医院
关键词：脑；胼胝体；挫伤；磁共振成像
医学影像学杂志000103摘 要：目的报告4例胼胝体非出血性挫伤的MRI表现。材料与方法回顾性分析4例胼胝体非出血性挫伤的MRI资料；3例为车祸伤，1例为坠落伤，都进行了CT和MR非增强检查。结果4例胼胝体挫伤灶2例位于压部、1例位于干部、1例累及胼胝体大部。CT扫描胼胝体区未见异常密度。MR图像上均表现为等或略低T1WI信号与明显高T2WI信号，未见出血信号。SE或FSET2WI(轴位或矢状位)对病变显示清楚，而FLAIR序列则能抑制脑脊液的高信号、使病变显示更加突出。1例4个月后MR检查显示挫伤灶演变为类似脑脊液信号的软化灶。4例中3例还合并颅内多处脑挫伤和血肿。结论胼胝体非出血性挫伤较少见，CT检查难以发现病灶MR是其最佳的影像学检查手段，轴位与矢状位SE或FSET2WI是显示挫伤灶的主要序列，FLAIR序列对病灶的显示更佳。本病典型的MRI表现是胼胝体区T1WI等或略低信号、T2WI高信号，无出血信号；胼胝体非出血性挫伤可合并颅内多发性外伤性改变。 MRI of Non hemorrhagic contusion of corpus callosum(report of 4 cases)
, http://www.100md.com
Quan Guanmin ,Hu Zhaolan ,Hu Zhaolan
(Imaging center,The second haspital of HeFei, HeFei 230011)
Abstract：Purpose To describe MRI findings of 4 cases of non-hemorrhagic contusion of corpus callosum. Materials and methods The MR imagings of 4 patients were reviewed retrospectively. 3eases were victims of vehicle accident. 1 patient was injuried by falling. All patients were examined with precontrast CT and MR imaging. Results The lesions were located at splenium(2 cases) and stem(1 eases) in three patients. The othe case, corpus callosum was affected nearly completely. There was no abnormal signs of corpus callosum on their CT imagings. MR study of all 4 cases demonstrated isointense or slight hypointense signal with gray matter on T1WI and obvious hyperintense signal lesious on T2WI oncorpus callosum. There was no hemorrhagic signal of densith detected on MR and CT imagings at corpus eallosum. These contusion lesions were demonstrated nicely on SE or FSE T2WI imagings. On FLAIR sequence, these lesions were revealed more clearly or the signal of CSF was suppressed. On the MR examination of one case four months later, the contusion lesion become malacia which signal similar to that of CSF. Several other multiple contusion and hemorrhage lesions were detected in three cases. Conclusions The non-hemorrhagic contusion of corpus callosum is a relatively rare speeies.These lessions can't he found on CT imagings,while MRI is the best tool of dtecting. SE or FSE T2WI is the main sequence for demonstrating. These lesions could he seen more clearly on FLAIR sequence. The isointense or slight hypointeuse T1WI signal and hyperintense T2WI signal of corpus callosum after head injury is the typical MR imaging signs.
, http://www.100md.com
Keywords：Brain Corpus callosum Contusion Magnetic resonance
参考文献：
[1]刘明铎，主编.实用颅脑损伤学.北京：人民军医出版社，1995，86-87.
[2]胡小吾，赵孟尧，过宗南，等.弥漫性轴索损伤的病理和CT研究.中华放射学杂志，1993，27(8)，528-531.
[3]陈世勇，郭天德，赖清泉，等.脑弥漫性轴索损伤的CT诊断.中华放射学杂志，1994，28(6):415-416.
[4]武忠弼，主编.病理学.北京：人民卫生出版社，1998，447.
[5]隋邦森，吴恩惠，陈雁冰，主编.磁共振诊断学.北京：人民卫生出版社，1994，143.
[6]Suzuki Y，Yamadori A，Endo K，et al.Dissociation of letter and picture naming resulting from callosal disconnection.Neurology，1998，51(5)：1390-1394.
[7]全冠民，叶录安，胡昭兰.颅脑MR成像中FLAIR技术及应用.国外医学临床放射学分册，1999，22(1)：13-18.
收稿日期：1999-06-07
修稿日期：1999-10-18, http://www.100md.com
单位：230011 安徽省合肥市第二人民医院
关键词：脑；胼胝体；挫伤；磁共振成像
医学影像学杂志000103摘 要：目的报告4例胼胝体非出血性挫伤的MRI表现。材料与方法回顾性分析4例胼胝体非出血性挫伤的MRI资料；3例为车祸伤，1例为坠落伤，都进行了CT和MR非增强检查。结果4例胼胝体挫伤灶2例位于压部、1例位于干部、1例累及胼胝体大部。CT扫描胼胝体区未见异常密度。MR图像上均表现为等或略低T1WI信号与明显高T2WI信号，未见出血信号。SE或FSET2WI(轴位或矢状位)对病变显示清楚，而FLAIR序列则能抑制脑脊液的高信号、使病变显示更加突出。1例4个月后MR检查显示挫伤灶演变为类似脑脊液信号的软化灶。4例中3例还合并颅内多处脑挫伤和血肿。结论胼胝体非出血性挫伤较少见，CT检查难以发现病灶MR是其最佳的影像学检查手段，轴位与矢状位SE或FSET2WI是显示挫伤灶的主要序列，FLAIR序列对病灶的显示更佳。本病典型的MRI表现是胼胝体区T1WI等或略低信号、T2WI高信号，无出血信号；胼胝体非出血性挫伤可合并颅内多发性外伤性改变。 MRI of Non hemorrhagic contusion of corpus callosum(report of 4 cases)
, http://www.100md.com
Quan Guanmin ,Hu Zhaolan ,Hu Zhaolan
(Imaging center,The second haspital of HeFei, HeFei 230011)
Abstract：Purpose To describe MRI findings of 4 cases of non-hemorrhagic contusion of corpus callosum. Materials and methods The MR imagings of 4 patients were reviewed retrospectively. 3eases were victims of vehicle accident. 1 patient was injuried by falling. All patients were examined with precontrast CT and MR imaging. Results The lesions were located at splenium(2 cases) and stem(1 eases) in three patients. The othe case, corpus callosum was affected nearly completely. There was no abnormal signs of corpus callosum on their CT imagings. MR study of all 4 cases demonstrated isointense or slight hypointense signal with gray matter on T1WI and obvious hyperintense signal lesious on T2WI oncorpus callosum. There was no hemorrhagic signal of densith detected on MR and CT imagings at corpus eallosum. These contusion lesions were demonstrated nicely on SE or FSE T2WI imagings. On FLAIR sequence, these lesions were revealed more clearly or the signal of CSF was suppressed. On the MR examination of one case four months later, the contusion lesion become malacia which signal similar to that of CSF. Several other multiple contusion and hemorrhage lesions were detected in three cases. Conclusions The non-hemorrhagic contusion of corpus callosum is a relatively rare speeies.These lessions can't he found on CT imagings,while MRI is the best tool of dtecting. SE or FSE T2WI is the main sequence for demonstrating. These lesions could he seen more clearly on FLAIR sequence. The isointense or slight hypointeuse T1WI signal and hyperintense T2WI signal of corpus callosum after head injury is the typical MR imaging signs.
, http://www.100md.com
Keywords：Brain Corpus callosum Contusion Magnetic resonance
参考文献：
[1]刘明铎，主编.实用颅脑损伤学.北京：人民军医出版社，1995，86-87.
[2]胡小吾，赵孟尧，过宗南，等.弥漫性轴索损伤的病理和CT研究.中华放射学杂志，1993，27(8)，528-531.
[3]陈世勇，郭天德，赖清泉，等.脑弥漫性轴索损伤的CT诊断.中华放射学杂志，1994，28(6):415-416.
[4]武忠弼，主编.病理学.北京：人民卫生出版社，1998，447.
[5]隋邦森，吴恩惠，陈雁冰，主编.磁共振诊断学.北京：人民卫生出版社，1994，143.
[6]Suzuki Y，Yamadori A，Endo K，et al.Dissociation of letter and picture naming resulting from callosal disconnection.Neurology，1998，51(5)：1390-1394.
[7]全冠民，叶录安，胡昭兰.颅脑MR成像中FLAIR技术及应用.国外医学临床放射学分册，1999，22(1)：13-18.
收稿日期：1999-06-07
修稿日期：1999-10-18, http://www.100md.com