摘要
目的：探讨MRI动态增强扫描（DMRI）在丰满垂体中的鉴别诊断价值。材料和方法：选取我院1999年10月一2005年4月期间具备：①垂体高径在男性超过8mm，女性超过10mm；②垂体双侧基本对称；③MRI平扫及普通增强扫描（CMRI）中垂体信号均匀，并完成DMRI检查；④有完整的临床资料为人选条件的丰满垂体共22例，回顾性分析其MRI图像资料。结果：非瘤性丰满垂体19例，其中青春期12例，流产后4例，产后l例，增强后24。48s显示以垂体结节部为中心向远侧及两侧呈渐进性、对称性弥散样强化，增强后60—72s垂体均匀强化；垂体增生2例，增强后24—72s见以垂体结节部为中心向远侧及两侧呈渐进性、对称性弥散样强化，但结节部强化程度明显高于垂体远侧部。瘤性垂体3例，均为垂体微腺瘤。
To explore the value of differential diagnosis using dynamic contrast - enhanced MR imaging （DMRI） in plumpy pituitary gland. Materials and Methods- MRI manifestations of 22 cases with plttmpy pituitary gland were analyzed retrospectively from October 1999 to April 2005, the inclusion criteria were：① more than 8 nun in the height of pituitary gland in male and more than 10 mm in female.②no significant differences in shape between the right and left side of pituitary stalk.③homogeneous signal intensity of pituitary gland in pre - contrast and conventional contrast MR imaging. ④with integrated clinical data. Results：Of the 22 cases, 19 cases were non - tumorous plumpy pituitary gland, of which 12 cases were youthhood, 4 cases were post - abortion and one case was postpartum, the earliest contrast - enhanced structure was the pars teberalis, followed by gradual and symmetrical enhancement from pars teberalis to pars distalis and the both side of pituitary stalk at 24 -48 seconds, homogeneous signal intensity was seen at 60 - 72 seconds after administration of gadopentetate dimeglumine, 2 cases were hyperplasia of pituitary gland, the enhanced pattern was similar to the former group, but the duration of enhancement deferred at 24 -72 seconds, and signal intensity of pars teberalis was obviously higher than of pars distalis. 3 cases were pituitary microadenoma, nodules with low signal intensity were clearly demonstrated at 36- 72 seconds after administration of gadopentetate dimeglumine.Conclusion： DMRI appears to have great potentials in differentiating the tumorous and non - tumorous plumpy pituitary gland.
出处
《中国医学计算机成像杂志》
CSCD
2006年第2期84-87,共4页
Chinese Computed Medical Imaging
关键词
垂体
高分泌因素
垂体增生
微腺瘤
磁共振成像
Pituitary gland Hypersecretio factor Pituitary hyperplasia Pituitary microadenomaMagnetic resonance imaging
