Feasibility of 80 kVp tube voltage coronary CTA combined with volume-based adaptive statistical iterative reconstruction in overweight or class obesity patients
10.13929/j.issn.1672-8475.2020.05.008
- VernacularTitle: 80 kVp管电压冠状动脉CTA联合ASiR-V图像重建用于超重和级肥胖患者的可行性
- Author:
Jingbo DU
1
Author Information
1. Department of Radiology, People's Hospital of Beijing Daxing District
- Publication Type:Journal Article
- Keywords:
Contrast media;
Coronary artery disease;
Overweight;
Tomography, X-ray computed
- From:
Chinese Journal of Interventional Imaging and Therapy
2020;17(5):289-293
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the feasibility of using 80 kVp tube voltage coronary CTA (CCTA) combined with volume-based adaptive statistical iterative reconstruction (ASiR-V) in overweight or class obesity patients. Methods: Totally 120 overweight or class obesity patients who underwent CCTA were randomly divided into 80 kVp group or 100 kVp group (each n=60), and 60% ASiR-V was used for image reconstructions. The image quality, CT value, SNR, contrast noise ratio (CNR), CT dose index volume (CTDIvol), dose length product (DLP), contrast agent dose and effective radiation dose were compared between the two groups. Results: There was no significant difference of image quality score between 2 groups (P>0.05). There were statistical differences of CTDIvol, DLP, contrast agent dose and effective radiation dose between 2 groups (all P<0.05). There was no significant difference of CT values in aortic root, right coronary artery, left anterior descending branch nor left circumflex branch between 2 groups (all P>0.05). No significant difference of SNR nor CNR of right coronary artery, left anterior descending branch and left circumflex branch was found between 2 groups (all P>0.05). Conclusion: Adopting 80 kVp tube voltage combined with 60% ASiR-V image reconstruction for CCTA in overweight or class obesity patients can obtain equivalent image quality to 100 kVp tube voltage, while the contrast agent dose and effective radiation dose are reduced.
