MRI电影相位对比与超声对照对正常志愿者餐前、餐后门静脉血流定量研究  

Quantitative Assessment of Blood Flow in Portal Vein Using Cine Phase-contrast Magnetic Resonance and Doppler Color Ultrasonography

作　　者：李彩英[1] 黄勃源[1] 崔彩霞[1] 刘怀军[1] 孟令惠[1] 

机构地区：[1]河北医科大学第二医院影像科,石家庄050000

出　　处：《放射学实践》2007年第5期471-474,共4页Radiologic Practice

摘　　要：目的采用MRI电影相位对比法(Cine PC MRI)对正常志愿者餐前、餐后门静脉血流动力学进行定量测量,并与多普勒超声(DUS)对照。方法健康志愿者26例,男16例,女10例。分别于空腹和进食1000cal食物1h后定量测量门静脉血流。结果电影相位对比法及多普勒超声(DUS)测量正常志愿者餐后门静脉血流参数较餐前明显增加(P<0.01),电影法门静脉流速增长为(34.11±16.76)%,流量增长为(45.87±16.22)%;DUS餐后门静脉流速较餐前增长(29.11±15.55)%,流量增长(35.54±18.77)%。对餐前门静脉血流量行相位对比MRI与超声相关性分析,两者相关性较好(r=0.606,P<0.01)。结论PCMRI与DUS均可反映餐前、餐后门静脉血流的变化;CinePCMRI反映门静脉血流的变化更接近人体的生理状态。Objective：To study the change of mean blood flow velocity and flow volume of portal vein in healthy volunteers at fasting and after meal stage with cine phase contrast （PC） MRI and compared with that of color Doppler US （CDUS）. Methods：Twenty-six healthy volunteers （16 males,10 females） were submitted to cine PC MRI and CDUS. The mean flow velocity of portal vein before and after meal （100cal） were measured respectively. Results： In healthy volunteers, the after meal blood flow parameters of portal vein were markedly increased both on Cine PC MRI and CDUS （P〈0.01）. The mean velocity of portal vein after meal on Cine PC MRI increased by （34.11±16.76）% and the volume increased by （45. 87±16. 22）% respectively. The mean flow velocity and volume of portal vein on CDUS increased by （29. 11 ± 15.55）% and （35.54±18.77） % respectively. The flow volume of portal vein before meal showed good correlation between PC MRI and CDUS （r= 0. 606, P〈0. 01）. Conclusion：Both Cine PC MRI and CDUS could display the change of mean blood flow velocity and volume of portal vein before and after meal. The change of blood flow of portal vein assessed on Cine PC MRI was assimilated to the physiological state of human body.

关 键 词：磁共振成像 电影 门静脉 血流动力学过程 门静脉高压 超声检查 多普勒 

分 类 号：R445[医药卫生—影像医学与核医学]