Magnetic resonance imaging of extraocular rectus muscles abnormalities in acute acquired concomitant esotropia  

作　　者：Jia-Yu Chen Li-Rong Zhang Jia-Wen Liu Jie Hao Hui-Xin Li Qiong-Yue Zhang Zhao-Hui Liu Jing Fu 

机构地区：[1]Beijing Tongren Eye Center,Beijing Tongren Hospital,Beijing Key Laboratory of Ophthalmology&Visual Sciences,Capital Medical University,Beijing 100176,China [2]Department of Radiology,Beijing Tongren Hospital,Capital Medical University,Beijing 100176,China [3]Department of Industrial Engineering and Operation Research,University of California,Berkeley 94720,USA

出　　处：《International Journal of Ophthalmology(English edition)》2024年第1期119-125,共7页国际眼科杂志（英文版）

基　　金：Supported by National Natural Science Foundation of China(No.82070998);Young Scientists Fund of the National Natural Science Foundation of China(No.82101174);Program of Beijing Hospitals Authority(No.XMLX202103);Program of Beijing Municipal Science&Technology Commission(No.Z201100005520044);Capital Health Development Research Special Project(No.2022-1-2053);Beijing Hospitals Authority Youth Programme(No.QML20230205).

摘　　要：AIM:To investigate the difference of medial rectus(MR)and lateral rectus(LR)between acute acquired concomitant esotropia(AACE)and the healthy controls(HCs)detected by magnetic resonance imaging(MRI).METHODS:A case-control study.Eighteen subjects with AACE and eighteen HCs were enrolled.MRI scanning data were conducted in target-controlled central gaze with a 3-Tesla magnetic resonance scanner.Extraocular muscles(EOMs)were scanned in contiguous image planes 2-mm thick spanning the EOM origins to the globe equator.To form posterior partial volumes(PPVs),the LR and MR cross-sections in the image planes 8,10,12,and 14 mm posterior to the globe were summed and multiplied by the 2-mm slice thickness.The data were classified according to the right eye,left eye,dominant eye,and non-dominant eye,and the differences in mean cross-sectional area,maximum cross-sectional area,and PPVs of the MR and LR muscle in the AACE group and HCs group were compared under the above classifications respectively.RESULTS:There were no significant differences between the two groups of demographic characteristics.The mean cross-sectional area of the LR muscle was significantly greater in the AACE group than that in the HCs group in the non-dominant eyes(P=0.028).The maximum cross-sectional area of the LR muscle both in the dominant and non-dominant eye of the AACE group was significantly greater than the HCs group(P=0.009,P=0.016).For the dominant eye,the PPVs of the LR muscle were significantly greater in the AACE than that in the HCs group(P=0.013),but not in the MR muscle(P=0.698).CONCLUSION:The size and volume of muscles dominant eyes of AACE subjects change significantly to overcome binocular diplopia.The LR muscle become larger to compensate for the enhanced convergence in the AACE.

关 键 词：acute acquired concomitant esotropia magnetic resonance imaging extraocular muscles 

分 类 号：R779.6[医药卫生—眼科]