自动分割在海马硬化型颞叶内侧癫痫亚区体积中的应用  

Application of Automatic Segmentation in the Volume of Subregions of Medial Temporal Lobe Epilepsy with Hippocampal Sclerosis

作　　者：王一婷 闫梦楠 李健 张彦玲 李金芹 陈兵[2] WANG Yiting;YAN Mengnan;LI Jian;ZHANG Yanling;LI Jinqin;CHEN Bing(Department of Radiology,General Hospital of Ningxia Medical University,Yinchuan 750004,China;不详)

机构地区：[1]宁夏医科大学临床医学院,宁夏银川750004 [2]宁夏医科大学总医院放射科,宁夏银川750004

出　　处：《中国医学影像学杂志》2025年第1期18-25,共8页Chinese Journal of Medical Imaging

基　　金：宁夏回族自治区重点研发计划项目(2020BEG03026);宁夏自然科学基金项目(2023AAC03611)。

摘　　要：目的探讨自动分割技术对颞叶内侧癫痫(MTLE)伴海马硬化(HS)各亚区体积的定量研究价值。资料与方法前瞻性纳入2021年1月—2023年5月宁夏医科大学总医院经MRI诊断或病理证实为单侧HS患者37例,其中左侧HS(L-HS)24例,右侧HS(R-HS)13例,并纳入同期性别与年龄相匹配的42名健康志愿者作为对照组。所有受试者均进行T1加权等体素三维磁化强度预备梯度回波序列(3D T1 MP-RAGE)扫描。3D T1 MP-RAGE经Freesurfer V7后处理得到海马及其亚区的体积数据。将体积数据进行标准化处理并计算体积不对称指数。对海马及其亚区标准化体积进行组内和组间比较,对体积不对称指数进行组间比较。采用受试者工作特征曲线及曲线下面积评估两种指标的诊断效能并进行比较。结果L-HS组和R-HS组患侧海马及其亚区的体积均小于对侧,对照组左侧海马及其亚区的体积均小于右侧,差异均有统计学意义(t/Z=-15.159~8.324,P<0.05)。L-HS组左侧海马及其亚区的体积均小于R-HS组和对照组的左侧海马及其亚区的体积,R-HS组右侧海马及其亚区的体积均小于L-HS组和对照组的右侧海马及其亚区的体积,差异均有统计学意义(P均<0.05)。L-HS组右侧、R-HS组左侧与对照组相应侧体积差异均无统计学意义(P均>0.05)。L-HS组与R-HS组、对照组,R-HS组与对照组体积不对称指数差异均有统计学意义(P均<0.05)。除L-HS组海马体和下托的体积不对称指数诊断效能优于体积(Z=2.035、1.989,P均<0.05)外,其余海马及亚区各体积和体积不对称指数差异均无统计学意义(P均>0.05)。结论自动分割技术对MTLE-HS患者海马及其亚区体积的定量研究具有重要价值,可为临床提供更加精准的影像学参考依据。Purpose To investigate the value of automated segmentation technique for quantitative study of the volume of each subregion of medial temporal lobe epilepsy(MTLE)with hippocampal sclerosis(HS).Materials and Methods A total of 37 patients with unilateral HS diagnosed by MRI or pathologically confirmed in General Hospital of Ningxia Medical University from January 2021 to May 2023 were prospectively included,including 24 cases of left-sided HS(L-HS)and 13 cases of right-sided HS(R-HS),and 42 healthy volunteers matched in gender and age during the same period were included as a control group.All subjects underwent T1-weighted equal voxel three-dimensional magnetisation-prepared rapid gradient-echo(3D T1 MP-RAGE)scanning.3D T1 MP-RAGE was post-processed by Freesurfer V7 to obtain volume data of the hippocampus and its subregions.The volume data were normalized and the volume asymmetry index was calculated.Within-group and between-group comparisons were performed for standardized volumes of the hippocampus and its subregions,and between-group comparisons were performed for volume asymmetry index values.The diagnostic efficacy of the two indices was assessed and compared using the subject operating characteristic curve and area under the curve.Results The volumes of the hippocampus and its subregions on the affected side were smaller than those on the contralateral side in both the L-HS and R-HS groups,and the volumes of the left hippocampus and its subregions were smaller than those on the right side in the control group,and the differences were statistically significant(t/Z=-15.159-8.324,all P<0.05).The volumes of the left side of the hippocampus and its subregions in the L-HS group were smaller than those of the left hippocampus and its subregions in the R-HS group and in the control group,and the volumes of the right side of the hippocampus and its subregions in the R-HS group were smaller than those of the L-HS group and the right hippocampus and its subregions of the control group,and the differences were statist

关 键 词：癫痫 颞叶 海马硬化 海马自动分割 磁共振成像 

分 类 号：R742.1[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]