【摘要】 目的 探讨正常成人股骨头内不同区域的血供差异情况。方法 回顾性分析25例正常成人行DCEMRI检查的临床资料，共取25侧右髋。将股骨头假设为一个球体，在DCEMRI的T₁WI序列上，右侧股骨头被分别从3个方位（冠状位、矢状位、横断位）等比例地各切分成3份。分别从冠状位、矢状位、横断位上测量及比较股骨头不同区域的DCEMRI半定量参数[达峰时间（TTP）、首过强化峰值（fEmax）、最大强化峰值（Emax）]的差异性。结果 （1）在冠状位上，TTP、fEmax和Emax在组间无统计学差异。（2）在横断位上，fEmax、Emax在横上低于横中（分别为P=0.024和P=0.001）和横下（分别为P=0.005和P=0.018）, TTP在横上高于横中与横下（分别为P=0.005和P=0.018）。（3）在矢状位上，fEmax、Emax在矢外低于矢中（分别为P=0.019和P=0.041）和矢内（分别为P=0.047和P=0.011）,TTP在矢外高于矢中和矢内（分别为P=0.014和P=0.010）。其他成对区域之间均无显著差异。结论 DCEMRI可以无创的方式研究正常成人股骨头内微循环。位于正常成人股骨头横上侧及矢外侧的灌注较差。更多还原

【Abstract】 Objective To investigate the difference of blood supply in different areas of the normal femoral head in adults.Methods A retrospective study analyzed the DCE-MRI parameters data of 25 normal adults（25 right hips） in our hospital.The femoral head was assumed to be a sphere.On T₁WI of DCE-MRI,the right femoral head was divided into three parts equally in coronal, sagittal, and transverse plane respectively.Time to peak（TTP）,maximum of enhancement at first past（fEmax）,maximum of enhancement（Emax）were measured in three parts and compared in coronal, sagittal and transverse plane respectively.Results（1） In coronal plane, there were no significant differences between the three parts in TTP,fEmax and Emax.（2） In transverse plane, fEmax and Emax were lower in the transverse superior zone than that in the transverse central zone significantly（P=0.024 and P=0.001） and the transverse inferior zone（P=0.005 and P=0.018）.TTP was higher in the transverse superior zone than that in the transverse central zone and the transverse inferior zone（P=0.005 and P=0.018）.（3） In sagittal plane, fEmax and Emax were lower in the sagittal lateral zone than that in the sagittal centralzone（P=0.019 and P=0.041） and sagittal medial zone（P=0.047 and P=0.011）.TTP was higher in the sagittal lateral zone than that in the sagittal central zone and the sagittal medial zone（P=0.014 and P=0.010）.There were no significant differences between other paired zones of the any values.Conclusion DCE-MRI can show the microcirculation in the normal adult femoral head in a non-invasive way.According to DCE-MRI parameters, there are poor perfusions on the transversesuperior and sagittallateral zones of the normal femoral head in adults.更多还原