Diagnostic value of subtraction coronary computed tomography angiography in patients with mild-moderate calcification score
10.12025/j.issn.1008-6358.2018.20170305
- VernacularTitle:减影冠状动脉CT血管成像对轻中度钙化积分患者的诊断价值
- Author:
Li-Jun ZHANG
1
;
Wei-Feng GUO
;
Tripathi PRATIK
;
Shan YANG
;
Yi-Han LU
;
Gang CHEN
Author Information
1. 复旦大学附属中山医院放射诊断科
- Keywords:
coronary heart disease;
vascular calcification;
subtraction technique;
coronary computed tomography angiography
- From:
Chinese Journal of Clinical Medicine
2018;25(1):35-39
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the clinical diagnostic value of subtraction coronary computed tomography angiography (CCTA) in patients with mild-moderate calcification of coronary artery (Agatston score＜400).Methods:A retrospective analysis of 69 cases with mild-moderate coronary calcification undergoing subtraction CCTA was performed.The image quality of calcified segments was evaluated using 4-point scale method.The stenosis of calcified segment was quantitatively assessed and divided into four different classifications (Ⅰ-Ⅳ).The time for quantitative assessment of calcified segments was recorded.Results:There were 113 calcified segments in 69 cases.The average image quality of calcified segments for conventional CCTA and subtraction CCTA was (3.4±0.6) and (3.8±0.4),respectively,with significant difference (P＜0.01).The Kappa coefficient used to describe the consistency of the stenosis grading in these two imaging methods was 0.77.The average time needed for quantitative assessment was (105 ± 44) s and (72 ± 44) s,respectively,with significant difference (P＜0.01).Conclusions:The two imaging methods have good consistency in evaluating stenosis grading in patients with mild-moderate calcification of coronary artery.Compared with conventional CCTA,subtraction CCTA can improve the image quality and reduce the time required for quantitative assessment of stenosis,thus improve the clinical efficiency.
