The application value of deep learning image reconstruction with coronary CT angiography using 100 kV
10.3969/j.issn.1002-1671.2024.12.031
- VernacularTitle:深度学习图像重建在100 kV冠状动脉CT血管成像中的应用价值
- Author:
Zhanli REN
1
;
Li SHEN
;
Min ZHANG
;
Yuxin LEI
;
Yong YU
;
Taiping HE
;
Nan YU
Author Information
1. 陕西中医药大学附属医院医学影像科,陕西 咸阳 712000
- Keywords:
deep learning;
image reconstruction;
coronary artery;
computed tomography;
image quality
- From:
Journal of Practical Radiology
2024;40(12):2066-2070
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of deep learning image reconstruction(DLIR)with coronary computed tomography angiography(CCTA)using 100 kV.Methods Sixty patients who underwent CCTA were selected.The tube voltage of 100 kV,noise index of 24 were applied.The 60％adaptive statistical iterative reconstruction-Veo(ASIR-V)and DLIR-low(DLIR-L),DLIR-medium(DLIR-M)and DLIR-high(DL1R-H)were reconstructed.The CT values and standard deviation(SD)values of the aortic root,left main artery,left anterior descending artery,left circumflex artery,right coronary artery and pericardial fat of the four groups of images were measured,and the signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were calculated.Two radiologists with five-year working experience subjectively evaluated the image quality using a five-point method double-blindly.Results The differences in noise(SD values),SNR values and CNR values among the four groups of images were statistically significant(P＜0.001).As the reconstruction gradually changed of 60％ASIR-V,DLIR-L,DLIR-M and DLIR-H,the coronary SD values gradually decreased,while the SNR values and CNR values gradually increased,among which the DLIR-H had the lowest SD values and the highest SNR values and CNR values.The subjective scores of the four groups of images by two radiologists showed good consistency(Kappa value=0.929,P＜0.001),and the subjective scores were all above 3 points which met the clinical diagnosis criteria.The subjective scores of DLIR-L,DLIR-M and DLIR-H were significantly higher than those of 60％ASIR-V(P＜0.001),with the DLIR-H achieving the highest subjective score.Conclusion DLIR can significantly reduce image SD value and improve image quality of CCTA with 100 kV,among which DLIR-H has the best effect on improving CCTA image quality.
