| 血流储备分数CT成像对冠状动脉旁路移植术后的影像学评价 |
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| 引用本文： | 王碧昊,王保平,段燕东,焦向锋,肖雁,张建芳.血流储备分数CT成像对冠状动脉旁路移植术后的影像学评价[J].CT理论与应用研究,2021,30(3):361-369. |
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| 作者姓名： | 王碧昊 王保平 段燕东 焦向锋 肖雁 张建芳 |
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| 作者单位： | 山西省大同市第五人民医院, 山西 大同 037009 |
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| 基金项目： | 大同市重点研发项目（2018092）。 |
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| 摘 要： | 目的:通过分析冠状动脉旁路移植术后患者的影像学表现，评估移植血管与原位冠状动脉的血流储备分数有无关联、有何关联。方法:对29例行CCTA的冠状动脉旁路移植术后患者进行回顾性或前瞻性分析，评估移植血管和原位冠状动脉狭窄程度，并在此基础上测量其FFRCT值。对移植血管及相应原位冠状动脉狭窄程度及FFRCT值做相关性检验。按照移植血管狭窄程度是否> 50%分为A、B两组，对相应移植血管及原位冠状动脉管腔狭窄程度、FFRCT值分别作两组间独立样本t检验。结果:移植血管与相应原位冠状动脉狭窄程度呈负相关，而与原位冠状动脉FFRCT值呈正相关。A、B两组相比，其相应原位冠状动脉斑块形成处狭窄程度及FFRCT值，两组间t检验结果有显著统计学差异。结论:移植血管与原位冠状动脉狭窄程度、FFRCT值及其演变存在关联，当移植血管狭窄时，原位冠状动脉分流了移植血管的部分血流，进而起到代偿作用。
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| 关 键 词： | 血流储备分数 CT冠状动脉成像 冠状动脉性心脏病 |
| 收稿时间： | 2021-01-18 |
CT Imaging Evaluation of Fractional Flow Reserve Score after Coronary Artery Bypass Grafting |
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| WANG Bihao,WANG Baoping,DUAN Yandong,JIAO Xiangfeng,XIAO Yan,ZHANG Jianfang.CT Imaging Evaluation of Fractional Flow Reserve Score after Coronary Artery Bypass Grafting[J].Computerized Tomography Theory and Applications,2021,30(3):361-369. |
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| Authors: | WANG Bihao WANG Baoping DUAN Yandong JIAO Xiangfeng XIAO Yan ZHANG Jianfang |
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| Affiliation: | The fifth people's hospital of Datong, Datong 037009, China |
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| Abstract: | Objective: To analyze the imaging findings of patients after coronary artery bypass grafting to evaluate whether or not there is a correlation between the transplanted vessels and the fractional flow reserve score of in-situ coronary artery. Methods: Retrospective or prospective analysis was performed on 29 patients who underwent CCTA after coronary artery bypass grafting, and FFRCT value was measured on this basis to evaluate the degree of graft and in-situ coronary artery stenosis. Pearson correlation test was performed for the stenosis degree and FFRCT value of the transplanted vessel and corresponding in situ coronary artery. According to whether the degree of stenosis of the transplanted vessels was > 50% or not, the two groups were divided into A and B groups, and the corresponding degree of stenosis of the orthotopic coronary artery lumen and FFRCT value were respectively used for independent sample t test between the two groups. Results: Grafted vessels were negatively correlated with the degree of in-situ coronary stenosis, but positively correlated with the FFRCT value of in-situ coronary artery. Compared with group A and Group B, the corresponding in-situ coronary plaque stenosis degree and FFRCT value showed statistically significant differences in t-test results between the two groups. Conclusion: Grafted vessels are associated with the degree of orthotopic coronary artery stenosis, FFRCT value and its evolution. The orthotopic coronary arteries compensate by diverting some of the blood flow from the grafted vessels when they become narrow. |
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