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目的:探讨MRI对无功能性肾上腺肿瘤的诊断及鉴别诊断价值。方法:对94例经手术病理及临床证实的无功能性肾上腺肿瘤的MRI表现进行回顾性分析;66例患者平扫后作了Gd-DTPA增强扫描,22例患者(无功能腺瘤11例和非腺瘤3例)作了化学位移成像(CSI)序列扫描。结果:MRI对无功能性肾上腺肿瘤定位、定性(区分良、恶性肿瘤)及判断肿瘤组织学类型的准确性分别为97.9%、95.0%及91.0%。11例无功能腺瘤在MRI反相位(OP)图像上的信号强度(SI)都有明显下降,SI指数平均(51±16)%;非腺瘤的信号强度无明显下降。结论:MRI在对大部分无功能性肾上腺肿瘤的定位、定性及判断肿瘤组织学类型上具有优越性,CSI成像对鉴别腺瘤和非腺瘤有重要的价值。
Abstract：Objective:To investigate the value of MRI in the diagnosis and differential diagnosis of nonfunctional adrenal tumors.Methods:MRI features of adrenal tumors verified with clinical and pathology were investigated retrospectively in 94 cases.The MR chemical shift imaging(CSI) was done in 25 cases(adenoma 11 cases and non-adenoma 14 cases).Results:The accuracies of location,qualitatively diagnoses(differentiating benign tumor from malignant tumor) and tissue characterization of MRI were 97.9%,95.0% and 91.0% respectively.All of 11 nonfunctional adenomas exhibited the decrease in signal intensity(SI) on MR opposed-phase(OP) images,the average of SI index was(51±16)%,and non-adenomas showed no loss of signal intensity on OP images.Conclusion:MRI is useful in the location,qualitatively diagnoses and tissue characterization of nonfunctional adrenal tumors.CSI image can play an important role in distinguishing adenoma from non-adenoma.
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基本信息:
中图分类号:R736.6
引用信息:
[1]王振祥,王东,张挽时,等.无功能性肾上腺肿瘤的MRI评价[J].新疆医科大学学报,2008,31(11):1599-1601.
2008-11-30
2008-11-30