乔远罡 1敖国昆 1董莘 1常海峰 1刘杰爱 1韩顺霞 1吴宁 1杨艳1
作者信息
- 1. 解放军第309医院放射科 北京 100091
- 折叠
摘要
Abstract
Objective:To determine reasonable scan parameter through compared the difference of imaging effect of bile duct system in specific period of liver and gall under different flip angle of Gd-EOB-DTPA MRC.Methods: 15 patients with suspected space occupying lesion of non-bile duct, who were ruled out the lesion of liver and bile duct system, and who need receive the detection of Gd-EOB-DTPA MRC, were implemented coronary scan when FA value respectively were 9° and 25° in the 20th and 30th min of specific period of liver and gall. And the images of each FA value were collected in one group. And the "3 scores method" was applied to evaluate the imaging effects of common bile duct, common hepatic duct, left and right hepatic duct, the secondary bile duct in liver, bile duct below second grade in liver and ductus cysticus. And the contrast noise ratio of common bile duct, common hepatic duct, left and right hepatic duct were measured, respectively. The rank sum test was applied to compare the subjective scores about imaging effect of bile ducts of different levels, and the t-test of two independence samples was applied to compare objective assessment.Results: 20-30 min after drug was injected, the differences of subjective scores for the imaging effects of common bile duct, common hepatic duct, left and right hepatic duct, the secondary bile duct in liver, bile duct below second grade in liver and ductus cysticus between FA9° and FA25°were statistically significant (t=20.88,t=31.65,t=39.78,t=29.36,t=40.21,t=23.32,P<0.05). And the differences of the contrast noise ratio for common bile duct, common hepatic duct, left and right hepatic duct between FA9° and FA25°also were statistically significant (t=14.76,t=10.75,t=11.69,t=8.13,P<0.05). Besides, there was obvious difference in the imaging effects of intra- and extra-hepatic bile duct between different FA values, and the imaging effect of FA25° was obviously better than that of FA9°.Conclusion: When the 3.0T MR Gd-EOB-DTPA MRC is applied to scan bile duct, the imaging effect of bile duct can be enhanced through increases FA value.关键词
磁共振成像/反转角/钆乙氧基苯甲基二乙烯五胺乙酸/胆管Key words
Magnetic resonance imaging/Flip angle/Gd-EOB-DTPA/Bile duct分类
医药卫生
