Impact of heart rate on image quality in dual-source one-stop CTA of the head and neck,aorta and coronary artery
10.3969/j.issn.1002-1671.2024.09.029
- VernacularTitle:心率对双源CT头颈-主动脉及冠状动脉一站式CTA图像质量的影响
- Author:
Meng WANG
1
;
Lin YANG
;
Bo WANG
;
Xiaolong HE
;
Bin XUE
;
Jiexin SHENG
Author Information
1. 汉中市中心医院医学影像科,陕西 汉中 723000
- Keywords:
computed tomography angiography;
aorta;
head and neck artery;
coronary artery
- From:
Journal of Practical Radiology
2024;40(9):1523-1527
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the impact of heart rate(HR)on the image quality of one-stop computed tomography angiogra-phy(CTA)of the head and neck,aorta and coronary artery with dual-source CT ECG-gated high-pitch.Methods A total of 172 patients underwent dual-source CT one-stop scan were continuously selected.The subjective image quality was graded on a 4-point scale by two radiologists blinded.Receiver operating characteristic(ROC)curve was performed to analyze the impact of HR on image quality.The patients were divided into high HR group(group A)and low HR group(group B)according to HR.The objective image quality was evaluated by CT value,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)in region of interest(ROI).Results HR≤64 beats/min coronary artery image quality were qualified.The aortic root score in group A was lower than that in group B(P＜0.05).The left cir-cumflex SNR in group B was higher than that in group A,but the difference was not statistically significant(P=0.05).The enhancement degree,SNR and CNR of all branches of residual coronary artery in group B were higher than those in group A,and the difference was statistically significant(P＜0.05).The attenuation of aortic root and carotid artery in group B was higher than that in group A,and the difference was statistically significant(P＜0.05).Conclusion One-stop CTA of the head and neck,aorta and coronary artery with dual-source CT ECG-gated high-pitch is feasible.To improve image quality,the patient's HR should be routinely controlled below 64 beats/min.
