西安交通大学学报（医学版）2024，Vol.45Issue(4)：547-551,5.DOI:10.7652/jdyxb202404004
冠状动脉周围脂肪衰减指数与CT图像重建参数的相关性研究
Correlation between the pericoronary fat attenuation index and the CT image reconstruction parameters
摘要
Abstract
Objective To evaluate the relationship between the pericoronary fat attenuation index(FAI)and the image reconstruction parameters of computed tomography(CT)coronary angiography,including reconstruction kernel,iterative reconstruction algorithm and image thickness.Methods Forty-four CT coronary angiography scans were prospectively enrolled.All scans were reconstructed by three means as follows:① Four different kernels(Soft_AA,Soft_BA,Soft_CA,and Soft_DA,sharpness from low to high)as the iterative reconstruction algorithm(KARL5)and image thickness(0.5 mm)remained unchanged.② Filtered back projection(FBP)and iterative reconstruction kernel(KARL5)as the kernel and image thickness(0.5 mm)remained unchanged.③ Different image thickness(0.5 mm and 1 mm)as the kernel(Soft_AA)and iterative reconstruction algorithm(KARL5)remained unchanged.The FAI of left anterior descending artery(LAD),left circumflex artery(LCX),and right coronary artery(RCA)was calculated using a dedicated software.Paired t-test and analysis of variance were used for statistical analysis.Results For LAD,LCX and RCA:① The differences of FAI among different reconstruction kernels reached statistical significance(P＜0.001),and FAI decreased as the sharper kernel was used.③ Compared with FBP,the FAI of KARL5-reconstructed images significantly increased(P＜0.001).③ Compared with 0.5 mm,the FAI of images with 1.0 mm thickness significantly decreased(P＜0.001).Conclusion The kernel,iterative reconstruction algorithms,and image thickness all have a significant impact on the FAI of each coronary artery.When using FAI for clinical diagnosis,the effect of CT reconstruction parameters should be taken into account.关键词
冠状动脉/粥样硬化/计算机断层扫描(CT)/重建参数/冠脉周围脂肪Key words
coronary artery/atherosclerosis/computed tomography(CT)/reconstruction parameter/pcricoronary fat分类
医药卫生引用本文复制引用
陈丽虹,陈功婷,樊钢练,李雅楠,屈婷婷,曹乐,荐志洁,郭建新..冠状动脉周围脂肪衰减指数与CT图像重建参数的相关性研究[J].西安交通大学学报（医学版）,2024,45(4):547-551,5.基金项目
陕西省重点研发计划项目-一般项目(No.2023-YBSF-068) （No.2023-YBSF-068）
陕西省重点研发计划项目-高校联合项目(No.2020GXLH-Y-026)Supported by the Key R&-D Plan Projects of Shaanxi Province(No.2023-YBSF-068)and the Shaanxi Provincial Key R&D Projects-University Joint Projects(No.2020GXLH-Y-026) （No.2020GXLH-Y-026）
