颅内脂肪瘤的MRI和CT影像表现  

MRI and CT Imaging Manifestations of Intracranial Lipoma

作　　者：赵庆江[1] 张海三[1] 张红星 尚晓斌 李杰[1] 傅炎炎[1] 刘恒源[1] 赵洪增[1] ZHAO Qing-jiang;ZHANG Hai-san;ZHANG Hong-xing;SHANG Xiao-bin;LI Jie;FU Yan-yan;LIU Heng-yuan;ZHAO Hong-zeng(Department of Medical Imaging,the Second Affiliated Hospital of Xinxiang Medical University,Xinxiang Key Laboratory of Multimodal Brain Imaging,Xinxiang Mental Image Engineering Technology Research Center,Xinxiang 453002,Henan Province,China;School of Psychology,Xinxiang Medical University,Henan,Xinxiang 453002,Henan Province,China;Department of Functional Examination,Second Affiliated Hospital of Xinxiang Medical College,Xinxiang 453002,Henan Province,China)

机构地区：[1]新乡医学院第二附属医院医学影像科,新乡市多模态脑影像重点实验室,新乡市精神影像工程技术研究中心,河南新乡453002 [2]新乡医学院心理学院,河南新乡453002 [3]新乡医学院院第二附属医院功能检查科,河南新乡453002

出　　处：《中国CT和MRI杂志》2023年第5期13-14,共2页Chinese Journal of CT and MRI

基　　金：河南省精神心理疾病临床医学研究中心开放课题(2021-zxkfkt-005);河南省医学科技攻关计划联合共建项目(LHGJ20210540);河南省高等学校重点科研项目计划(21A320020)。

摘　　要：目的 探讨颅内脂肪瘤在CT和MRI的影像表现。方法 对2016年6月至2021年6月间新乡医学院第二附属医院医学影像科诊断为颅内脂肪瘤的49例患者的MRI和CT影像表现进行回顾性分析。结果 颅内脂肪瘤MRI为49例,3例多发,其它均为单发;发生部位分别为前纵裂池24例、小脑幕10例、四叠体池6例、侧脑宰后角5例、胼胝体旁3例、环池1例。常规序列:T_(1)WI像病灶呈高信号、略高信号,T_(2)WI像大部分病灶呈高信号,T_(2)dark-fluid像为低信号;DWI序列:DWI(b值=0)像、DWI(b值=1000)像、ADC像病灶大部分为低信号;SWI序列:SWI_mag像、SWI_mip像大部分病灶为低信号,SWI_pha像大部分病灶为高、中心高周边低、高低混杂信号;双排CT及64排CT均为低信号,CT均值分别为为-33±23HU、-59±21HU。结论 颅内脂肪瘤在CT及MRI上影像具有特征性,SWI_mip像结合SWI pha像可能提高颅内脂肪瘤的检出率。Objective To investigate the imaging manifestations of intracranial lipoma on CT and MRI.Methods The MRI and CT imaging manifestations of 49 patients diagnosed with intracranial lipoma from June 2016 to June 2021 in the Medical Imaging Department of the Second Affiliated Hospital of Xinxiang Medical College were retrospectively analyzed.Results There were 49 cases of intracranial lipoma on MRI,3 cases had multiple lesions,and the others were single lesions;the locations were 24 cases of the anterior interhemispheric cistern,10 cases of the tentorium cerebellum,6 cases of the quadrigeminal cistern,5 cases of the posterior horn of the lateral ventricle,3 cases of around the paracallosum,and 1 cases of ambient cistern.Conventional sequence:in T_(1)WI image lesions showed high signal or slightly high signal,in T_(2)WI image of most lesions was high signal,in T_(2)dark-fluid image of lesions was low signal;DWI sequence:in DWI(b value=0)image、DWI(b value=1000)image and ADC image,most of the lesions are low signal.SWI sequence:in SWI_mag image,SWI_mip image and SWI image,most lesions are low signal;in SWI_pha image,most lesions are high signal or center high and peripheral low or high and low mixed signal;in double-row CT and The 64-slice CT were all low signal,and the mean CT values were-33±23HU and-59±21HU respectively.Conclusion Intracranial lipoma has characteristic imaging on CT and MRI,SWI_mip image combined with SWI_pha image may improve the detection rate of intracranial lipoma.

关 键 词：颅内脂肪瘤 MRI CT 

分 类 号：R739.91[医药卫生—肿瘤]