Assessment of coronary bio-degradable stent by using coronary computed tomography angiography
10.3760/cma.j.issn.1005-1201.2018.06.005
- VernacularTitle:CT血管成像评估冠状动脉生物可降解支架的可行性
- Author:
Hui GU
1
;
Lei HAN
;
Yang GAO
;
Zhihui HOU
;
Weihua YIN
;
Xinshuang REN
;
Ximing WANG
;
Bo XU
;
Bin LYU
Author Information
1. 100037,中国医学科学院阜外医院放射影像科心血管病国家重点实验室国家心血管病中心
- Keywords:
Coronary artery;
Tomography;
X-ray computed;
Stent
- From:
Chinese Journal of Radiology
2018;52(6):431-435
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the possibility of showing coronary bio-degradable stent(BDS) and luminal stenosis by using coronary computed tomography angiography(CCTA). Methods A total of 27 consecutive patients who had undergone CCTA follow-up for BDS implantation were enrolled from January to June of 2015. The duration between CCTA and coronary BDS implantation was 1 year. The patients' age were(54 ± 7)years in average. There were 18 male and 9 female patients. Of those patients, 18 BDS were implanted in left anterior descending coronary artery, and 9 in right coronary artery. Quantitative measurement of luminal stenosis, average areas of noncalcified and calcified plaque in proximal segment of stent (5 mm proximal to the stent), intra-stent, and distal segment of stent (5 mm distal to the stent) were performed and compared, using Kruskal Wallis as well as Mann-Whitney U tests. Results The mean length of BDS was (16.1 ± 4.4)mm. Coronary diameter stenosis (%) of the proximal segment, intra-stent and distal segment to BDS were 14.4%(11.5%, 23.1%), 23.4%(17.4%, 27.4%), and 16.4%(12.7%, 24.1%), respectively(H=10.17,P<0.05). The mean areas of noncalcified plaques were 6.6 (4.8, 8.4), 7.0 (5.4, 9.3) and 5.5 (4.1, 7.6) mm2, respectively in the segments of proximal, intra and distal to the BDS. The mean areas of calcified plaques were 0.5 (0, 1.5), 0.1 (0, 0.8) and 0.1 (0, 0.2) mm2, respectively, whereas no significant differences were found (P>0.05). Conclusion CCTA could be used to assess coronary bio-degradable stent and luminal stenosis without affection of mental artifact. Intra-stent restenosis was more frequently observed than proximal and distal segments of the BDS.calcified plaques were 0.5 (0, 1.5), 0.1 (0, 0.8) and 0.1 (0, 0.2) mm2, respectively, whereas no significant differences were found (P>0.05). Conclusion CCTA could be used to assess coronary bio-degradable stent and luminal stenosis without affection of mental artifact. Intra-stent restenosis was more frequently observed than proximal and distal segments of the BDS.
