Dual-layer spectral detector CT to study the correlation between pericoronary adipose tissue and coronary artery stenosis

作者：Xiaolong Zhu, Xujiao Chen, Shaowei Ma, Ke Zhou, Yang Hou · 发表于：Journal of Cardiothoracic Surgery · 年份：2021 · DOI：10.1186/s13019-021-01709-2 · 被引用次数：19 · 研究领域：Cardiovascular Disease and Adiposity、Advanced X-ray and CT Imaging、Cardiac Imaging and Diagnostics

BACKGROUND: To investigate the relationship of pericoronary adipose tissue (PCAT) with coronary artery stenosis using dual-layer spectral detector CT (SDCT). METHODS: 99 patients were retrospectively divided into normal group, non-significant stenosis group and significant stenosis group (n = 33 in each group). Fat attenuation index (FAI) 40kev, spectral curve slope (λHU), effective atomic number (Eff-Z) and epicardial fat volume (EFV) were quantitatively evaluated of the narrowest part of the lesion tissue by SDCT. RESULTS: There were significant differences in PCAT parameters on SDCT (FAI40keV, λHU, Eff-Z and EFV) among the three groups (P < 0.05). FAI40keV, λHU, and Eff-Z in significant stenosis group were statistically different from those in normal group and non-significant stenosis group (P < 0.05). FAI40keV, λHU, and Eff-Z in non-significant stenosis group were statistically different from significant stenosis group (P < 0.05). EFV in normal group were significantly lower in non-significant stenosis group and significant stenosis group (P < 0.001). Univariate and multivariate logistic regression analyses identified FAI40keV (OR = 1.50, 95%CI 1.01 to 1.09) and λHU (OR = 6.81, 95%CI 1.87 to 24.86) as independent predictors of significant stenosis. FAI40keV and λHU had quite good discrimination, with an AUC of 0.84 and 0.80 respectively. CONCLUSION: FAI40keV, λHU, and Eff-Z on SDCT in significant stenosis group were significantly different from normal and non-significant ...