Conclusion: Single-level progr ams were good at displaying the abnormal kinetics of blood flow and A-P shuntin g, and were useful to determine the nature of thromboses.

• 结论：动脉期同层面扫描能显示肿瘤和大血管侵犯引起的血流动力学异常，有助于定性和发现动-静脉瘘。