Zn-Cu支架和316L SS支架的急性回缩结果见表5-1。本部分将研究中用到的所涉及的所有血管节段（锌铜组40个节段，316L不锈钢组31个节段）均纳入了统计分析。表5-1可见，Zn-Cu和316L SS支架植入动脉前、球囊充盈时，两组靶血管直径之间的差别没有显著性，因此具有可比性（参考血管直径p=0.400；充盈时血管直径p=0.496）。Zn-Cu支架的急性回缩比例与316L SS支架相似(4±3)% vs (5±3)%，P=0.191）。与已经实现商业化的可生物降解镁金属支架（(5.57±0.72)%）、可降解PLLA支架相比（(5.22±0.38)%）相比更具有优势

The acute retraction results of Zn Cu scaffold and 316L SS scaffold are shown in Table 5-1. In this part, all vascular segments involved in the study (40 segments in zinc copper group and 31 segments in 316L Stainless Steel Group) were included in the statistical analysis. Table 5-1 shows that there is no significant difference in target vessel diameter between the two groups before Zn Cu and 316L SS stents are implanted into the artery and during balloon filling, so it is comparable (reference vessel diameter P = 0.400; vessel diameter during filling P = 0.496). The acute retraction ratio of Zn Cu scaffolds was similar to that of 316L SS scaffolds (4 ± 3)% vs (5 ± 3)% P = 0.191). Compared with commercial biodegradable magnesium metal scaffolds ((5.57 ± 0.72)%) and biodegradable PLLA scaffolds ((5.22 ± 0.38)%)