More injectionflowrate, slim branch injection pipe and long pipeline resulted in more resistance at the branch injection pipe.
由于注水量较高、注水支线管径较细、管线较长等原因，导致注水支线阻力偏大；
2
Conclusion Multi-slice spiral ct can provide quantitative analysis to renal blood perfusion, but injectionflowrate influence the perfusion parameters.
结论多层螺旋CT可对肾脏组织血流灌注进行定量分析，但注射流率影响灌注数值。
3
The total heat loss per unit time decreases gradually as the injection pressure, injectionflowrate and injection time increase, but the decrease extent reduces gradually.