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MRI fimdings of uveal metastases
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 3
- DOI:
- 10.3760/j.issn:1005-1201.2007.03.003
- Key Word:
- 葡萄膜;肿瘤;磁共振成像
Abstract： 目的 探讨葡萄膜转移瘤的MRI表现特点.方法 回顾性分析20例经病理或临床随访证实的葡萄膜转移瘤的MBI表现.1例仅行平扫,19例同时行平扫和增强扫描,其中4例行动态增强扫描.结果 20例葡萄膜转移瘤中,位于虹膜和睫状体2例,18例位于脉络膜;2例表现为略长T1、等T2信号,9例表现为等T1、等T2信号,3例表现为等T1、略长T2信号,3例表现为等T1、略短T2信号,2例表现为略短T1、略短T2信号,1例表现为略短T1、略长T2信号;8例表现为眼球壁轻度增厚,3例呈新月形,7例呈梭形,2例呈结节状.19例呈中度至明显强化;行动态增强扫描的4例时间-信号强度曲线均呈速升、缓降型.伴有视网膜脱离11例和玻璃体信号异常2例.结论 MRI能显示葡萄膜转移瘤的部位、形态、信号及强化特点,有助于葡萄膜转移瘤的诊断与鉴别诊断.
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