磁共振动态增强扫描在垂体微腺瘤中的价值

目的探讨动态增强扫描在垂体微腺瘤中的诊断价值。方法对34例经临床确诊的垂体微腺瘤患者,行平扫、动态增强扫描及延迟扫描,分析三者的信号特点及检出该病的灵敏度。结果平扫发现19例鞍区占位,15例垂体无明显改变,灵敏度为44.11%;动态增强扫描发现33例鞍区占位,1例垂体无明显改变,灵敏度为97.06%;延迟扫描发现26例鞍区占位,8例垂体无明显改变,灵敏度为76.47%。在垂体微腺瘤检出率上,动态增强扫描明显高于平扫,具有统计学差异(P<0.05);延迟扫描明显高于平扫,具有统计学差异意义(P<0.05);动态增强扫描检出率虽高于延迟扫描,但无统计学差异(P>0.05)。结论动态增强对诊断垂体瘤具有较高准确性,动态增强扫描及延迟扫描可作为诊断垂体微腺瘤的影像学方法。

The Value of Magnetic Resonance Dynamic Contrast Enhanced Scanning in Pituitary Adenomas

Objective To investigate the diagnosis value of dynamic contrast enhanced MR scanning in pituitary adenoma.Methods 34 pituitary adenoma patients confirmed by clinical diagnosis,MR plain scanning,dynamic contrast enhanced scanning and delayed scaning were underwent on them,analyzing the signal characteristics of pituitary adenoma and the sensitivity in detecting pituitary adenoma of the three methods.Results MR plain scaning discover 19 sellar mass,and 15 pituitary have no significant change,the sensitivity of detecting pituitary adenoma was 44.11%;dynamic contrast enhanced scanning discover 33 sellar mass,and 1 patient have no significant change,the sensitivity was 97.06%;delayed scanning discover 26 sellar mass,and 8 pituitary have no significant change,the sensitivity was 76.47%.in the detection rate of pituitary adenoma,dynamic enhanced MR scanning was significantly higher than the plain scanning,have statistically difference(P<0.05);delayed scanning was significantly higher than the MR plain scanning,have statistically difference(P<0.05);although dynamic contrast enhanced scanning was higher than the delayed scanning,but have no significant difference(P>0.05).Conclusion Dynamic contrast enhanced scanning have high accuracy in the diagnosis of pituitary tumors,dynamic contrast enhanced scanning and delayed scanning can be used as the imaging methods in diagnostic of pituitary adenoma.