眼眶异物DR角膜缝环定位法与CT三维重建定位法临床价值评估  

Clinical Value Evaluation of DR Corneal Suture Ring Localization and CT 3 D Reconstruction Localization of Orbital Foreign Body

作　　者：郭丽旭 陈擎宇 袁钊辉[1] 龙崇德[1] 聂时淮 GUO Li-xu;CHEN Qing-yu;YUAN Zhao-hui;LONG Chong-de;NIE Shi-huai(State Key Laboratory of Ophthalmology,Zhongshan Ophthalmic Center,Sun Yat-sen University//Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science//Guangdong Provincial Clinical Research Center for Ocular Diseases,Guangzhou 510060)

机构地区：[1]中山大学中山眼科中心//眼病防治全国重点实验室//广东省眼科视觉科学重点实验室//广东省眼部疾病临床医学研究中心,广州510060

出　　处：《中山大学学报（医学科学版）》2023年第6期1016-1021,共6页Journal of Sun Yat-Sen University:Medical Sciences

基　　金：广东省自然科学基金(2021A1515010513)。

摘　　要：【目的】探讨眼眶异物数字化放射摄影(DR)角膜缝环定位法与CT三维重建定位法临床价值。【方法】回顾性分析我院2016年1月至2020年12月收治的疑为眼部异物的患者作为研究对象,拟研究数量51例。同时做眼眶异物DR角膜缝环定位法和CT三维重建定位法,统计两种方法异物检出率,分析眼部异物的定位情况。【结果】采用眼眶异物DR角膜缝环定位法能分辨眼眶内异物者38例,采用CT三维重建定位法能分辨眼眶内异物者46例,CT三维重建定位法准确率90.20%高于眼眶异物DR角膜缝环定位法准确率74.51%(P<0.05)。眼眶异物DR角膜缝环定位法能分辨出球内异物23例,CT三维重建定位法能分辨球内异物25例,其中CT三维重建定位法能分辨的球内异物最大径为(2.65±0.14)mm,低于眼眶异物DR角膜缝环定位法能分辨的球内异物直径(2.94±0.36)mm(P<0.05)。眼眶异物DR角膜缝环定位法显示异物点钟位、异物到水平面距离、异物到矢状面距离及异物到两侧角巩膜缘连线距离与CT三维重建定位法结果相比无差异(P>0.05)。采用CT三维重建定位法能比较清楚地分辨出眼内、外的40例高密度影;采用眼眶异物DR角膜缝环定位法有23例确定为眼球内高密度影,有15例高密度影无法确定是眼球内外(P<0.05)。【结论】对于眼眶内异物定位来说,CT三维重建定位法分辨率高,定位准确,能检测眼球内部细微金属颗粒,可做眼部异物定位的常规方法,同时对于少数在虹膜根部、睫状体部、悬韧带外侧部的小异物定位,需配合眼眶异物DR角膜缝环定位法来定位。【Objective】To investigate the clinical value of DR corneal suture ring localization and CT 3D reconstruc‐tion localization of orbital foreign bodies.【Methods】Retrospective analysis was performed on patients(51 cases)suspected of ocular foreign bodies admitted to our hospital from January 2016 to December 2020 At the same time,DR corneal suture ring localization and CT three-dimensional reconstruction localization of orbital foreign bodies were performed,and the de‐tection rate of foreign bodies by the two methods was calculated to analyze the location of ocular foreign bodies.【Results】There were 38 cases of intraorbital foreign body identified by DR corneal suture ring localization method,and 46 cases of intraorbital foreign body identified by CT three-dimensional reconstruction localization method.The accuracy of CT three-dimensional reconstruction localization method was 90.20%,which was higher than that of DR corneal suture ring localiza‐tion method 74.51%(P<0.05).Intraocular foreign bodies in 23 cases could be distinguished by DR corneal suture ring lo‐calization,and 25 cases by CT 3D reconstruction localization.The maximum diameter of intraocular foreign bodies that could be distinguished by CT 3D reconstruction localization was(2.65±0.14)mm.The diameter of intraspherical foreign body was(2.94±0.36)mm(P<0.05)lower than that which could be distinguished by DR corneal suture ring localization method.The results of DR corneal suture ring localization of orbital foreign body showed no difference compared with the results of CT 3D reconstruction localization(P>0.05).Forty cases of high density images inside and outside the eye could be clearly distinguished by CT 3D reconstruction.By using DR corneal suture ring localization method,23 cases were con‐firmed to be intraocular high-density shadows,and 15 cases could not be confirmed to be intraocular high-density shad‐ows(P<0.05).【Conclusions】For the location of intraorbital foreign bodies,CT three-dimensional reconstruction can be used

关 键 词：眼眶异物 眼眶异物DR角膜缝环定位法 CT三维重建定位法 分辨率 高密度影 

分 类 号：R445[医药卫生—影像医学与核医学]