MR电影相位对比法流体定量测量校正模型  

Experimental Study of Steady Fluid Flow Velocity with Cine Phase-contrast MR

作　　者：张同华[1] 胡春洪[1] 朱晓黎[1] 惠品晶[2] 

机构地区：[1]苏州大学附属第一医院影像中心 [2]苏州大学附属第一医院TCD室

出　　处：《中国血液流变学杂志》2008年第3期438-440,450,共4页Chinese Journal of Hemorheology

摘　　要：目的通过建立流体模型,评价MR电影相位对比法对流体定量测量的可行性及准确性。方法在1.5T磁共振机上利用MR电影相位对比法,高压注射器分别匀速注射为0.1mL/s、0.2mL/s及0.3mL/s时,对二根截面积分别为3mm2及5mm2的管道内液体流动速度进行测定,获得相应的流速值,利用SPSS统计分析软件对流体实际流速与测量速度进行相关性分析,得出相应的转换函数关系。结果稳态流体模型测量所得实际流速与对应的测量流速呈线性相关(r=0.992;P=0.0001),显示相关性极佳;实际流速(y)与MR流速(x)之间的函数公式为:y=9.47x。结论经校正后,MR电影相位对比法在液体流量测量是可行的,结果也是可靠的。Objecetive To evaluate the accuracy of Cine Phase-contrast MR Flow measurement.Methods Tube flow phantoms were established.Flow velocity of the steady flow in tubes(3mm2,5mm2) was measured by Cine Phase-Contrast MR when the injection rate of syringes were 0.1mL/s,0.2mL/s and 0.3mL/s correspondingly. The correlation analysis were made and the transform function formulas of the models were also obtained by the SPSS.Results Mode velocity and the corresponding PC-MR velocity showed a linear correlation (r=0.992...

关 键 词：磁共振 电影相位对比法 流动实验 

分 类 号：R445.2[医药卫生—影像医学与核医学]