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作者回顾了16例经病理证实的垂体腺瘤手术后的23次MRI检查,旨在评估使用对比剂的价值。其中14例经蝶窦手术,2例经蝶、额下手术。术后检查时间分别为:12次在放疗后;5次在6个月之内;6次在6～12个月之间;3次在1～2年之间;9次在2年以后。采用GE Signa 1.5T超导设备,冠状位T_1WI,层厚3mm,间距0.6mm,矩阵256×256。肿瘤表现为T_1WI上信号略低于正常垂体的软组织肿块,强化程度也低于正常垂体。平扫以垂体柄和高信号的后叶
The authors reviewed 23 MRI scans of 16 pathologically confirmed pituitary adenomas aimed at assessing the value of using contrast agents. Among them, 14 cases were transsphenoidal sinus surgery and 2 cases were transsphenoidal and subfrontal. The postoperative examination time was: 12 times after radiotherapy; 5 times within 6 months; 6 times between 6 and 12 months; 3 times between 1 and 2 years; 9 times after 2 years. Using GE Signa 1.5T superconducting equipment, coronal T_1WI, layer thickness 3mm, spacing 0.6mm, matrix 256×256. The tumor showed a soft tissue mass slightly lower than that of the normal pituitary on T_1WI, and the enhancement was also lower than that of the normal pituitary. Sweep the posterior lobe with pituitary stalk and high signal