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目的:探讨MRI对垂体腺瘤的诊断价值及鉴别诊断。方法:对37例经手术及病理证实的垂体腺瘤,分析其MRI表现。结果:25例微腺瘤中泌乳素腺瘤16例,生长激素腺瘤6例,促肾上腺皮质激素腺瘤2例,促甲状腺激素腺瘤1例。T1WI低信号及稍低信号18例,等信号7例;T2WI呈高信号及稍高信号18例,等信号7例。12例大腺瘤中泌乳素7例,生长激素腺瘤2例,促肾上腺皮质激素腺瘤1例,无功能性腺瘤2例。T1WI呈等信号9例,高信号2例,低信号1例,T2WI高信号10例,等信号2例。结论:MRI能准确反映垂体腺瘤的影像特征,对诊断和手术具有重要指导意义。
Objective: To investigate the diagnostic value and differential diagnosis of pituitary adenoma by MRI. Methods: Thirty-seven cases of pituitary adenomas confirmed by surgery and pathology were analyzed. Results: There were 16 cases of prolactinoma in 25 cases of microadenoma, 6 cases of growth hormone adenoma, 2 cases of adrenocorticotrophic adenoma and 1 case of thyroid stimulating hormone adenoma. 18 cases of T1WI low signal and slightly lower signal, 7 cases of equal signal; T2WI showed high signal and slightly higher signal in 18 cases, and other signals in 7 cases. Seven cases of prolactin in 12 cases of adenoma, 2 cases of growth hormone adenoma, 1 case of adrenocorticotrophic adenoma, 2 cases of non-functioning adenoma. T1WI showed equal signal in 9 cases, high signal in 2 cases, low signal in 1 case, T2WI high signal in 10 cases, and other signals in 2 cases. Conclusion: MRI can accurately reflect the image features of pituitary adenoma, which has important guiding significance for diagnosis and surgery.