["低信号区"征在脑脓肿包膜期诊断中的价值]
[Value of "low-signal zone" sign in the diagnosis of brain abscess in the capsule period].
作者信息
Chen Chang-Yong, Peng Guang-Chun, Yang Ang
机构信息
Department of Radiology, Xiangya Hospital, Central South University, Changsha 410008, China.
出版信息
Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2004 Aug;29(4):454-6.
OBJECTIVE
To evaluate the value of "low-signal zone" sign in the diagnosis of brain abscess in the capsule period.
METHODS
The conventional MRI was performed pre-therapy in 21 patients with brain abscess in the capsule period and 25 patients with vesica-astrocytomas. We analyzed the pathologic basis of "low-signal zone" sign in brain abscess and compared the frequency and shape of "low-signal zone" sign in brain abscess and vesica-astrocytomas.
RESULTS
The "low-signal zone" sign in MRI occurred more frequently in brain abscess (85.7%, 18/21) than in vesica-astrocytomas (52.0%, 13/25). The "low-signal zone" sign in the former was intact, while that in the latter was not.
CONCLUSION
The "low-signal zone" sign is helpful to diagnose brain abscess in the capsule period, and is valuable to differentiate brain abscess and vesica-astrocytomas.
目的
评估“低信号区”征象在脑脓肿包膜期诊断中的价值。
方法
对21例脑脓肿包膜期患者和25例膀胱星形细胞瘤患者在治疗前进行常规MRI检查。分析脑脓肿“低信号区”征象的病理基础，并比较脑脓肿和膀胱星形细胞瘤中“低信号区”征象的出现频率及形态。
结果
MRI上“低信号区”征象在脑脓肿中的出现频率（85.7%，18/21）高于膀胱星形细胞瘤（52.0%，13/25）。前者的“低信号区”征象完整，而后者不完整。
结论
“低信号区”征象有助于脑脓肿包膜期的诊断，对鉴别脑脓肿和膀胱星形细胞瘤有价值。
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