CAJ | 학술논문

目的:分析MRI在非孔源性视网膜脱离的应用价值,并探讨其致病原因.方法:收集因未发现裂孔而行MRI检查的非孔源性视网膜脱离患者24例,其中男性14例,女性10例,年龄21～85岁,平均51.5岁.全部病例经手术病理、临床综合诊断和随访证实.24例患者均采用头线圈行MRI检查,其中21例MRI增强;然后分析MRI影像及其致病原因.结果:非孔源性视网膜脱离表现为眼球内异常信号灶,V形13例(54%),弧形8例(34%),条状2例(8%),片状1例(4%),近端均连向视盘.非孔源性视网膜脱离,I_1WI表现为中等或稍高信号,T_2WI多呈相对低信号,也可呈等或高信号;增强后无强化表现.致病原因包括脉络膜黑色素瘤11例,外伤所致玻璃体出血3例,瘢痕或机化3例,脉络膜血管瘤2例,转移1例,脉络膜脱离1例,Coat病1例,异物术后1例,先天小眼球1例.结论:MRI不仅显示非孔源性视网膜脱离的特征性表现,而且对可能的致病原因作出正确诊断.
목적:분석MRI재비공원성시망막탈리적응용개치,병탐토기치병원인.방법:수집인미발현렬공이행MRI검사적비공원성시망막탈리환자24례,기중남성14례,녀성10례,년령21～85세,평균51.5세.전부병례경수술병리、림상종합진단화수방증실.24례환자균채용두선권행MRI검사,기중21례MRI증강;연후분석MRI영상급기치병원인.결과:비공원성시망막탈리표현위안구내이상신호조,V형13례(54%),호형8례(34%),조상2례(8%),편상1례(4%),근단균련향시반.비공원성시망막탈리,I_1WI표현위중등혹초고신호,T_2WI다정상대저신호,야가정등혹고신호;증강후무강화표현.치병원인포괄맥락막흑색소류11례,외상소치파리체출혈3례,반흔혹궤화3례,맥락막혈관류2례,전이1례,맥락막탈리1례,Coat병1례,이물술후1례,선천소안구1례.결론:MRI불부현시비공원성시망막탈리적특정성표현,이차대가능적치병원인작출정학진단.
Purpose: To evaluate the application of MR imaging in diagnosis of nonrhegmatogenous reti-nal detachment with other ocular disorders. Methods: Twenty- four patients with nonrhegmatogenous retinal detachment with other ocular disorders were referred for MR imaging between March 2005 and March 2009. The patients ranged from 21 to 85 years of age (average, 51.5years) and included 14 men and 10 women. All ocular conditions were confirmed by surgery and follow - up. MRI studies were per-formed in all the patients, and contrast- enhanced MRI exams were undergone in 21 patients. All MR findings of nonrhegmatogenous retinal detachment with other ocular disorders were evaluated. Results: The configuration of nonrhegmatogenons retinal detachments with other ocular disorders included V shape (54%, 13/24), crescent shape (34%, 8/24), strip shape (8%, 2/24)and irregular shape(4%, 1/24). The apex of the nonrhegmatogenous retinal detachment was at the optic disc on cross - sectional images, which mostly presented moderate or slightly high signal intensity on T_1WI, low, moderate and high sig-nal signal intensity on T_2WI. The signal intensity of the sultretinal space was not enhanced after contrast material administration. Underlying ocular conditions were simultaneously detected with MR imaging, including melanoma of choroids(11 cases), virtreous hemorrhage resulting from trauma(3 cases) ; scar or organizing(3 case) , choroidai hemangioma(2 cases), metasteses(1 case), choroidal detachment(1 cas-es), Coat's(1 case), surgery of ectopic body (1 case) and small eyeball(1 case).Conclusion: MR imag-ing is crucial not only for the evaluation of nonrhegmatogenous retinal detachment, but also for the de-tection of an underlying cause.