摘要
本文报告脉络膜黑色素瘤 CT 扫描9例,磁共振成象(MRI)1例。两种技术均发现了眼内肿瘤,准确定位和确定病变范围,其中3例发现眼外蔓延。黑色素瘤据有短 T_1和 T_2弛豫时间,T_1加权象(T_1WI)为中等强信号。而 T_2加权象(T_2WI)为低信号,因而 MRI 对脉络膜黑色素瘤有组织学诊断意义。
Ten choroidal melanomas studied were with computed tomography(CT,nine cases)and magnetic resonance imaging (MRI,one case).Both techniques detected all the intraocular tumors with localization and determination of the extent of the lesions.Three of them were found to have extraocular extention.Because both T_1 and T_2 were relatively shortened in melanoma,on T weighted MR image,the tumor was seen as an area of moderately high signal and on T.weighted image, melanoma appeared as an area of low signal.MRI can provide a histological diagnosis of this tumor.
出处
《眼科学报》
1990年第3期76-79,共4页
Eye Science
