兔眼部植入物CT和MRI诊断  

An experimental study of eye implants on CT and MRI in rabbits

作　　者：程敬亮[1,2] 任翠萍[1,2] 李荫太[1,2] 齐云秋 管生[1,2] 姜曦[1,2] 张成[1,2] 张效房[1,2] 

机构地区：[1]河南医科大学第一附属医院放射科 [2]河南医科大学第一附属医院眼科

出　　处：《河南医科大学学报》1998年第2期15-17,共3页Journal of Henan Medical University

基　　金：河南省科技攻关项目

摘　　要：将硅胶带、硅胶海绵、人工晶状体、甲基纤维素和硅油置入４只兔的８眼内和眼球周围，探讨其ＣＴ和ＭＲＩ表现。植入物置入后２ｈ内完成ＣＴ和ＭＲＩ。ＭＲＩ选用ＳＥ序列Ｔ１ＷＩ、ＰＤＷＩ、Ｔ２ＷＩ和Ｆｌａｓｈ２ｄ序列。结果：３枚硅胶带和２枚人工晶状体ＣＴ未显示，ＭＲＩ呈低信号全部显示；３枚硅胶海绵ＣＴ显示低密度，ＭＲＩ呈低信号，均被检出；玻璃体内硅油ＣＴ呈高密度，Ｔ１ＷＩ和ＰＤＷＩ呈高信号，Ｔ２ＷＩ和Ｆｌａｓｈ２ｄ序列呈低信号而被检出；眼房和玻璃体内甲基纤维素ＣＴ和ＭＲＩ均未显示。结果提示：ＣＴ和ＭＲＩ均是检出玻璃体内硅油和眶内硅胶海绵的有效方法，检出眶内硅胶带和眼内人工晶状体以ＭＲＩ为优；? In order to explore the CT and MRI manifestations of common eye implants,some implants including silicagel belt,silicagel sponge,artificial lens,methyl cellulose and silicon oil were inserted into 8 intraand periocular areas of 4 rabbits.CT and MRI were accomplished within 2 hours after the implants were successfully implanted.T1WI,PDWI,T2WI　of SE sequence and Flash2d sequence were used in this experiment.Three pieces of silicagel belt and 2 artificial lens undetected by CT were all found on MRI,which were hypointensity on MRI.Three pieces of silicagel sponge revealed on CT and MRI,and they were hypodensity on CT and hypointensity on MRI.Intravitreous silicon oil exhibited on CT and MRI,but it was hyperdensity on CT,hyperintensity on　T1WI　and PDWI of SE sequence and hypointensity on T2WI of SE sequence and Flash2d sequence.Intravitreous and intracamera methyl cellulose weren′t found on CT and MRI.Our results demonstrated that CT or MRI was an effective method for revealing intravitreous silicon oil and intraorbital silicagel sponge,but for detection of intraorbilal silicagel belt and intraocular lens MRI was better.It was difficult to find intraocular methyl cellulose by CT and MRI.

关 键 词：眼异物 人工晶状体 植入物 磁共振成像 CT 诊断 

分 类 号：R779.140.4[医药卫生—眼科] R816.97[医药卫生—临床医学]