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目的:分析垂体腺瘤的MRI影像学特点。方法:对所有患者行自旋回波(SE)序列横轴、矢状及冠状面的T_1加权及T_2加权像,对怀疑微腺瘤者再行Gd-DTPA增强扫描。结果:垂体大腺瘤26例,微腺瘤6例,MRI诊断与病理诊断符合率96%,85%(27/32)的大腺瘤在T_1 WI上为中、低信号,80%(26/32)在T_2WI呈高信号。微腺瘤信号变化及形态学改变均不明显,但行Gd-DTPA增强扫描后均可确诊。结论:MRI检查定位准确,诊断正确率高,是检查诊断垂体瘤的理想工具。
Objective: To analyze the MRI features of pituitary adenoma. Methods: T_1 weighted and T_2 weighted images of horizontal axis, sagittal and coronal plane of spin echo (SE) series were performed in all patients. Gd-DTPA enhanced scan was performed on suspected micro-adenomas. Results: There were 26 cases of pituitary adenoma and 6 cases of microadenoma. The coincidence rates of MRI diagnosis and pathological diagnosis were 96% and 85% (27/32) / 32) showed a high signal at T_2WI. Micro-adenoma signal changes and morphological changes were not obvious, but line Gd-DTPA enhanced scan can be confirmed. Conclusion: MRI is accurate and accurate in diagnosis. It is an ideal tool for the diagnosis and diagnosis of pituitary tumors.