磁共振化学位移成像对肾上腺肿瘤的诊断（附18例报告）

目的：评价磁共振（magnetic resonance，MR）化学位移成像（chemical shift imaging，CSI）对肾上腺腺瘤的诊断价值。方法：回顾分析我院18例肾上腺肿瘤患者，术前均进行了MR-CSI检查，对其病历资料及MR图象进行分析。结果：12例肾上腺腺瘤在MR—CSI同相位、反相位序列的检查中，均表现为反相位不同程度的信号减低，6例非腺瘤性病变反相位上不表现为明显的信号降低。结论：MR—CSI对肾上腺腺瘤与非腺瘤性病变的诊断与鉴别诊断具有重要价值。

The Diagnosis Value of Chemical Shift Magnetic Resonance Imaging on Adrenal Tumor(Report of 18 Cases)

Objective： To assess the role of chemical shift magnetic resonance imaging in diagnosing adrenal tumor. Methods： 18 cases diagnosed as adrenal tumor were reviewed. All patients received chemical shift magnetic resonance imaging before operation. Their magnetic resonance imagings as well as the pathologic diagnosis were analyzed. Results：Adrenal adenoma manifests as a round or elliptical foci with equal or lower signal in T1-weighted sequence,while slight higher signal in T2-weighted sequence. All the adrenal adenomas showed variably lower signal in chemical shift magnetic resonance imaging opposed-phase compared with the in phase sequence. Such phenomena were not seen in 6 cases of non-adenoma lesions. Conclusions：The chemical shift imaging sequence plays a significant role in differential diagnosis of adrenal adenoma from other lesions.