Artificial intelligence iterative reconstruction for low-dose chest CT images of infants with congenital heart disease
10.13929/j.issn.1003-3289.2025.04.004
- VernacularTitle:深度学习全模型迭代算法重建先天性心脏病婴儿胸部低剂量CT图像
- Author:
Minghua SUN
1
;
Liying PENG
;
Feifei ZHANG
;
Yukun PAN
;
Tong LI
;
Jiliang ZHANG
;
Ruigang XIE
;
Yinghui GE
Author Information
1. 阜外华中心血管病医院放射科,河南 郑州 451460
- Publication Type:Journal Article
- Keywords:
infant;
heart diseases;
low dose;
tomography,X-ray computed;
artificial intelligence
- From:
Chinese Journal of Medical Imaging Technology
2025;41(4):525-529
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of artificial intelligence iterative reconstruction(AIIR)for low-dose chest CT images of infants with congenital heart disease.Methods Totally 262 infants with congenital heart disease who would undergo chest CT scanning were prospectively enrolled and randomly divided into low-dose group(n=142)and conventional dose group(n=120).Chest CT scanning with tube voltage of 80 kVp and tube current of 10 mAs was performed in low-dose group,and hybrid iterative reconstruction(HIR,group A)and AIIR(group B)were used to reconstruct images,respectively.In conventional dose group,chest CT scanning with tube voltage of 80 kVp and tube current of 100 mAs was performed,and HIR was used to reconstruct images(group C).Then subjective and objective evaluation on image quality were performed,the results were compared among 3 groups,and the value of AIIR was analyzed.Results Significant differences of image quality and clarity of displaying structures were found among 3 groups(all P＜0.001).Among them,except for the clarity of interlobar fissure,no significant difference of subjective scores was found between low-dose AIIR images and conventional dose HIR images(all corrected P＞0.05),while subjective scores of low-dose HIR images were all lower than those of low-dose AIIR images and conventional dose HIR images(all corrected P＜0.05).Significant differences of standard deviation(SD),signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were found among 3 groups(all P＜0.001)and between each 2 groups(all corrected P＜0.05).The effective dose of low-dose group and conventional dose group was 0.09(0.08,0.10)and 0.85(0.75,1.03)mSv,respectively,and the former was lower than the latter(Z=-13.942,P＜0.001).Conclusion Using AIIR could obtain low-dose chest CT images of infants with quality comparable to conventional chest CT images.
