MRI半剂量动态增强扫描对垂体微腺瘤的诊断分析  

Analysis of MRI half-dose dynamic enhanced scan in diagnosing pituitary microadenoma

作　　者：林开武[1] 

机构地区：[1]福建省妇幼保健院放射科,福建福州350001

出　　处：《医学影像学杂志》2008年第4期377-379,共3页Journal of Medical Imaging

摘　　要：目的：探讨MRI半剂量动态增强扫描技术对垂体微腺瘤的诊断价值。方法：回顾性分析经手术及临床综合诊断明确的29例垂体微腺瘤的MRI平扫及半剂量动态增强扫描资料。结果：29例垂体微腺瘤中，病灶大小小于于5mm 18例，5—10mm 11例。平扫16例T1WI可见低信号影；无明显异常信号8例（其中6例病灶直径小于5mm）；垂体形态异常5例；而半剂量动态增强扫描均发现病灶，表现为动态早期稍低信号影。结论：半剂量动态增强扫描MR对垂体微腺瘤的诊断有极高的应用价值，尤其是动态增强早期扫描最为敏感。Objective：Discussing the value of MRI scan, especially half-dose dynamic enhanced scan in diagnosing pituitary microadenoma.Methods： We retrospectively studied the MPd data of 29 cases of pituitary micro-adenoma confenned by surgery and pathology which were all scanned and after half-dose dynamic enhanced. Results：29 cases pituitary micro-adenoma. For the pituitary micro-adenoma sized 18 cases within 5 mm; 11 cases 5 ～ 10 mm. Before gadolinium enhanced 16 cases showed low signal 5 cases, showed abnormalshape; 8 cases homogeneous signal. And after half-dose dynamic enhanced all cases were positive,in the early MPd dynamic enhanced showed low signal. Conclusion：The great value of half-dose MRI dynamic enhanced scan in diagnosing pituitary micro-adenoma, and the early MRI dynamic enhanced scan is the most sensitive in diagnosing pituitary micro-adenoma.

关 键 词：垂体 微腺瘤 磁共振成像 

分 类 号：R742[医药卫生—神经病学与精神病学] R445.2[医药卫生—临床医学]