垂体腺瘤HRI诊断价值的研究

目的探讨垂体腺瘤的MRI表现。材料和方法对60例垂体瘤患者进行MRI扫描，包括自旋回波序列（sE）横轴位、矢状位及冠状位的T1WI和T2WI，对怀疑微腺爝的患者使用Gd—DTPA造影荆增强扫描。结果垂体大腺瘤的MRI表现为等、稍长T1、长T2信号，占位效应明显，常向上累及视交叉、向两倒侵袭海绵窦。微腺瘤患者垂体的信号及形态改变不明显，需行Gd—DTPA增强扫描、几乎均可确诊。结论MRI对垂体大腺瘤具有重要的诊断价值，动态增强扫描可以明显提高垂体微腺瘤的检出率。

Study on the Diagnostic Value of MRI in Pituitary Adenoma

Objective To investigate the MRI performance of pituitary adenoma. Materials and methods 60 cases of pituitary tumor were scanned by MR｜, including the spin echo sequence （SE） axial, sagittal and coronal TIWI and T2WI, the suspected micro-adenomas patients were arranged to have Gd-DTPA contrast-enhanced scan. Results The MRI per- formance of pituitary adenoma is long or iso-T1, long T2 signal and has obvious mass effect, often invases the optic chiasm upward and invases the cavernous sinus towards bilateral, The shape and signal of the pituitary changed unconspicnous in the micro-ad- enomas cases and Gd-DTPA contrast-enhanced scanning is needed to make an definite diagnosis. Conclusion MR1 has an important value in diagnosing the pituitary adenoma and Gd-DTPA contrast-enhanced MRI scanning increased the detection rate of micro- adenomas obviously.