Clinical Value Evaluation of DR Corneal Suture Ring Localization and CT 3D Reconstruction Localization of Orbital Foreign Body
10.13471/j.cnki.j.sun.yat-sen.univ（med.sci）.2023.0616
- VernacularTitle: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
- Author:
Li-xu GUO
1
;
Qing-yu CHEN
1
;
Zhao-hui YUAN
1
;
Chong-de LONG
1
;
Shi-huai NIE
1
Author Information
1. 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
- Publication Type:Journal Article
- Keywords:
orbital foreign body;
DR corneal suture ring localization of orbital foreign body;
CT 3D reconstruction positioning method;
resolution;
high density film
- From:
Journal of Sun Yat-sen University(Medical Sciences)
2023;44(6):1016-1021
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the clinical value of DR corneal suture ring localization and CT 3D reconstruction localization of orbital foreign bodies. MethodsRetrospective 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 detection rate of foreign bodies by the two methods was calculated to analyze the location of ocular foreign bodies. ResultsThere 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 localization method 74.51% （P<0.05）. Intraocular foreign bodies in 23 cases could be distinguished by DR corneal suture ring localization， 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 confirmed to be intraocular high-density shadows， and 15 cases could not be confirmed to be intraocular high-density shadows （P < 0.05）. ConclusionsFor the location of intraorbital foreign bodies， CT three-dimensional reconstruction can be used as a conventional method for locating ocular foreign bodies with high resolution and accuracy， and can detect fine metal particles inside the eyeball. Meanwhile， for a few small foreign bodies in the iris root， ciliary body and lateral suspension ligament， it is necessary to locate orbital foreign bodies with DR corneal suture ring.
