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MRI diagnosis of eyeball diseases
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 2
- DOI:
- 10.3760/j.issn:1005-1201.2003.02.002
- Key Word:
- 眼肿瘤;视网膜脱离;磁共振成像;视网膜母细胞瘤;肿瘤转移
Abstract： 目的总结75例眼球内病变的MRI表现,以期进一步提高对眼球病变的认识.方法对75例经手术病理或临床诊断的眼球内病变病人进行MR检查.MRI检查使用Toshiba超导中场(0.35 T)磁共振系统和Siemens公司的Vision Plus高场(1.5 T)MRI系统.增强后的MRI检查37例.应用高场MRI系统,增强后使用脂肪抑制技术.结果视网膜母细胞瘤20例,T1WI呈等信号11例,呈低信号9例;T2WI呈等信号5例,稍高信号15例.Coats病5例中无一例发现钙化,均为单眼发病,均无眼球增大;T1WI均呈月牙形稍高信号,在T2WI病变侧眼球信号普遍高于对侧正常眼球信号.脉络膜血管瘤3例在T1WI上呈稍高信号,在T2WI上均呈高信号.转移瘤20例病灶均发生于眼球后壁,向球外侵犯8例,向球内侵犯20例;T1WI显示眼球壁局部明显增厚,向球内隆起,呈等信号8例,稍低信号12例;在T2WI呈等信号6例,呈稍高信号14例;增强检查15例,均有明显强化.黑色素细胞瘤7例中5例在T1WI上呈高信号,2例呈等信号;在T2WI上均为低或明显低信号.视网膜脱离19例在T1WI均表现为高或稍高信号,在T2WI均为高信号.1例髓上皮细胞瘤在T1WI呈高信号,T2WI呈等信号.结论 MRI是发现和诊断眼球病变的重要检查手段,对绝大多数疾病可做出正确诊断.
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