Value of Revolution CT dual-low technique coronary angiography in coronary heart disease
10.3969/j.issn.1002-1671.2024.11.010
- VernacularTitle:Revolution CT双低技术冠状动脉造影在冠心病中的应用价值
- Author:
Boyun WU
1
;
Hongzhe TIAN
;
Wei ZHANG
;
Jianhui CHENG
;
Pei ZHANG
;
Baohua WU
Author Information
1. 宝鸡市中心医院医学影像科,陕西 宝鸡 721008
- Keywords:
Revolution CT dual-low technique;
digital subtraction angiography;
coronary heart disease;
image quality;
radiation dose
- From:
Journal of Practical Radiology
2024;40(11):1796-1800
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the application value of Revolution CT dual-low technique coronary angiography in coronary heart disease.Methods One hundred patients with suspected coronary heart disease were retrospectively selected and randomly divided into control group and observation group,who all were examined by Revolution CT.In the control group(50 cases),the tube voltage was 120 kV,the contrast agent iohexol was 350 mg I/mL,and the dose of contrast agent was 1 mL/kg.In the observation group(50 cases),the tube voltage was 100 kV,the contrast agent iohexol was 350 mg I/mL,and the dose of contrast agent was 0.8 mL/kg.All patients underwent coronary digital subtraction angiography(DSA)examination at the same time.The image quality(subjective and objective evaluation indexes)and radiation dose of the two groups were compared,the diagnostic value of the two methods for coronary artery stenosis was compared,and the diagnostic consistency with coronary DSA between the two methods were compared using the Kappa test,as well as the typical coronary images of the two groups were analyzed.Results There were no significant differences in the sub-jective image quality grade and excellence rate between the observation group and the control group(P＞0.05).The CT value and noise of the observation group were higher than those of the control group(P＜0.05).There were no statistically significant differ-ences in the signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the right coronary proximal and the left coronary main trunk between the two groups(P＞0.05).Compared with the control group,the volume CT dose index(CTDIvol),dose length product(DLP),and effective dose(ED)were lower in the observation group(P＜0.05).Compared with the results of coronary DSA,the positive predictive value,negative predictive value,sensitivity,specificity and accuracy of the two methods were＞80％,while there was no significant difference between the two groups(P＞0.05).The Kappa value of the observation group versus coronary DSA diagnosis was 0.871,the Kappa value of the control group ver-sus coronary DSA diagnosis was 0.889,and the consistency of both methods versus coronary DSA diagnosis was good.Conclusion Revolution CT dual-low technigue coronary angiography has good diagnostic value for coronary heart disease and can significantly reduce the radiation dose while ensuring image quality.
