英语语法分析

In conclusion, real-time US is a useful and reliable modality in detecting periportal vessels and differentiating PPCC from the hepatic artery.

结论：实时间超音波对傍门静脉血管的侦测及鑑别傍门静脉侧枝循环与肝动脉，是有用且可信赖的工具。