摘要
目的旨在探讨核磁共振(MRI)与CT检查对颅内肿瘤的鉴别诊断价值。方法收集2016年1月至2019年1月于眉山市人民医院就诊治疗的78例原发性颅脑肿瘤患者作为研究对象,回顾性分析其相关临床影像学资料,比较MRI与CT检查对颅脑肿瘤的诊断符合率,并总结颅脑肿瘤在不同影像学检查中的图像特征。结果 MRI检查对颅内肿瘤检出的诊断符合率显著高于CT(P<0.05);CT检查中,26例髓母细胞瘤均表现为略高密度的圆形肿块,增强后病灶表现为均匀强化,MRI示T1WI低信号,T2WI高信号,增强示病灶均匀强化;7例室管膜肿瘤CT可表现为较高密度肿块影,增强后病灶呈现均匀强化,MRI中显示2例除出现肿瘤转移且信号较高,余5例显示为四脑室内长T1长T2信号异常;8例蛛网膜囊肿CT表现为边界清楚地的类圆形肿块影,可见轻度水肿,MRI示T1W1低信号和T2W1高信号;10例多形性胶质母细胞瘤表现为形态不规则的低或等混杂密度影,9例病灶内部可见坏死区,增强示病灶不均匀强化,MRI示病灶实体部位呈现TIWI低信号,T2WI高信号,增强表现为不规则的花环状强化;脑膜瘤可示卵圆形或分叶状均一高或等密度肿块,其中16例伴有点状不规则或全部钙化,增强示明显均匀强化,MRI示T1WI、T2WI均与脑皮质等信号,病灶内及周围可见血管流空信号,增强可见病灶显示明显均匀强化。结论 MRI对颅内肿瘤的检出及诊断符合率均显著高于CT检查,且MRI对于病灶的性质诊断更为准确,更有利于指导临床医生对颅内多种肿瘤进行相鉴别。
Objective To explore the differential diagnosis value of magnetic resonance imaging (MRI) and CT examination for intracranial tumors.Methods 78 patients with primary craniocerebral tumors who were treated in our hospital from January 2016 to January 2019 were enrolled.The clinical imaging data were retrospectively analyzed.The diagnostic coincidence rates of MRI and CT examinations for craniocerebral tumors were compared,and the imaging features of craniocerebral tumors in different imaging examinations were summarized.Results The diagnostic coincidence rate of MRI examination for intracranial tumor was significantly higher than that of CT (P<0.05).In the CT examination,26 medulloblastomaes showed round mass with slightly high-density.After enhancement,the lesions showed uniform enhancement.MRI showed low signal on T1WI and high signal on T2WI.After enhancement,the lesions were uniformly enhanced.The CT of 7 ependymomaes showed masses with higher density.After enhancement,the lesions showed uniform enhancement.In MRI,2 cases showed metastasis of tumor with higher signal,and the remaining 5 cases showed abnormality of long T1 and long T2 signal in the fourth ventricle.CT of 8 cases of arachnoid cyst showed round-like mass shadow with the clear border,and showed mild edema,MRI showed T1W1 low signal and T2W1 high signal.10 glioblastoma multiformes showed irregular shadow of low or equal hybrid density.Necrotic areas were observed in 9 lesions,and the lesions showed uneven enhancement after enhancement.MRI showed that the physical part of the lesion showed low signal of TIWI,high signal of T2WI,and after enhancement,it showed irregular enhancement like flower ring.Meningioma can show ovate or lobulated masses with uniformly high or equal density,of which 16 cases were accompanied with a little irregular or all calcification,and after enhancement,they showed obvious uniform enhancement.MRI showed T1WI,T2WI and cerebral cortex and other signals.Vascular flow empty signals were observed in lesion and around the lesion,and after enhancement,the lesions showed significant uniform enhancement.Conclusion The coincidence rate of MRI in the detection and diagnosis of intracranial tumors is significantly higher than that of CT examination,and MRI is more accurate in the diagnosis of the nature of the lesions,which is more conducive to guiding clinicians to identify multiple tumors in the brain.
作者
张宗银
黄志敏
徐红
李松壕
ZHANG Zong-yin;HUANG Zhi-min;XU Hong(Department of Neurosurgery,Meishan People's Hospital,Meishan 620010,Sichuan Province,China)
出处
《中国CT和MRI杂志》
2020年第9期47-49,共3页
Chinese Journal of CT and MRI
基金
四川省卫生厅项目(150055)。
关键词
核磁共振
CT
颅内肿瘤
鉴别诊断
图像特征
Magnetic Magnetic Resonance
CT
Intracranial Tumor
Differential Diagnosis
Image Features
