MR反相位化学位移成像对肾血管肌脂瘤的诊断价值

Role of Opposed Phase Chemical Shift MRI in Differential Diagnosis of Renal Angiomyolipomas and Renal Carcinomas

目的:探讨MR反相位化学位移成像对肾血管肌脂瘤(AML)的诊断价值。方法:回顾性分析16例经CT证实肾AML和22例经手术证实肾癌MR反相位化学位移成像表现。结果:16例肾AML的19个肿瘤与肾实质交界面出现黑墨汁线,而22例肾癌与肾实质交界面未出现黑墨汁线。结论:肿块与肾实质交界面出现黑墨汁线提示AML,需用进一步检查来明确诊断。

Objective：To investigate the role of opposed-phase chemical shift MRI in differential diagnosis of renal angiomyolipomas （AML） from renal carcinomas. Methods： Manifestations of opposed-phase chemical shift MRI of 16 cases of CT confirmed renal AML and 22 cases of renal carcinomas confirmed surgically were retrospectively analyzed with emphasis on whether or not there was india ink line. Results：The india ink line at mass-kidney interface was observed in all 19 tumors of the 16 cases of AML,while it did not occur in any of 22 cases of renal carcinomas. Conclusion：The existence of india ink line at mass-kidney interface of a renal tumor is of value in the differential diagnosis of AML from renal carcinomas.