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目的探讨MRI同/反相位成像在肝脏血管平滑肌脂肪瘤(AML)的诊断价值。方法回顾性分析经病理证实的6例肝AML的MRI表现。结果 6例患者共8个病灶,4个病灶T1WI、T2WI呈高信号,T2WI抑脂像上信号明显衰减;2个病灶呈稍长T1、长T2信号,余2个病灶呈混杂信号,后4个病灶在T2抑脂像上信号衰减不明显,但在前后两次不同参数的反相位图上病灶内可见小片信号衰减区,其中2个病灶信号衰减区大小前后一致,另2个病灶在第2次反相位上低信号区内可见点状高信号影。结论 MRI同/反相位成像是肝AML诊断及鉴别诊断必不可少的序列。
Objective To investigate the diagnostic value of MRI simultaneous / reverse phase imaging in hepatic angiomyolipoma (AML). Methods We retrospectively analyzed the MRI findings of 6 cases of pathologically confirmed liver AML. Results There were 8 lesions in 6 patients. There were high signal intensity in T1WI and T2WI in 4 lesions and obvious attenuation in T2WI. The two lesions were slightly longer T1 and longer T2, There was no obvious attenuation of the signal on the T2 fat suppression image, but the small signal attenuation area was found in the lesion on the reverse phase image of two different parameters before and after. Among them, the size of the signal attenuation area of the two lesions was consistent before and after, and the other two lesions were The second anti-phase low signal area visible point-like high signal shadow. Conclusion MRI is the same / anti-phase imaging is essential for the diagnosis and differential diagnosis of liver AML sequence.