Artificial intelligence iterative reconstruction combined with 60kVp scanning for craniocervical CT angiography
10.13929/j.issn.1003-3289.2025.04.003
- VernacularTitle:深度学习全模型迭代算法联合60kVp扫描用于头颈部CT血管成像
- Author:
Qizhong SUN
1
;
Ting MENG
;
Liying PENG
;
Yicheng HAN
;
Ximing WANG
Author Information
1. 山东大学山东省立医院医学影像科,山东 济南 250012;山东第一医科大学附属省立医院医学影像科,山东 济南 250021
- Publication Type:Journal Article
- Keywords:
image processing,computer-assisted;
deep learning;
computed tomography angiography;
radiation dosage
- From:
Chinese Journal of Medical Imaging Technology
2025;41(4):520-524
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of artificial intelligence iterative reconstruction(AIIR)combined with 60 kVp scanning in craniocervical CT angiography(CTA).Methods Eighty-six patients with suspected craniocervical vascular diseases were prospectively enrolled and randomly received routine-dose(120 kVp)or low-dose(60 kVp)scanning(each n=43),and contrast dosage and radiation dose were recorded.After scanning,hybrid iterative reconstruction(HIR)was used to reconstruct routine-dose images(group A),while HIR images(group B1)and AIIR images(group B2)were performed to reconstruct low-dose images,respectively.The overall imaging quality,visualization of targeted large and small vessels and diagnostic confidence scores,as well as image noise(SD),signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of targeted large vessels were compared among 3 groups.Results Contrast dosage and effective dose(ED)decreased by 36.52％ and 77.56％ in low-dose scanning compared with those in routine-dose scanning,respectively.No significant difference of subjective scoring of imaging quality indexes was found between groups B2 and A(all adjusted P＞0.05),which were both higher than those in group B1(all adjusted P＜0.05).SD of target large vessels in group B2 than that of most target large vessels in group A(all adjusted P＜0.05)except for aortic arch.SNR and CNR of target large vessels in group B2 were higher than those in group A and B1(all adjusted P＜0.05),while SD of target large vessels in group B2 were lower than in group B1.Conclusion AIIR combined with 60 kVp scanning in craniocervical CTA could meet diagnostic requirements of imaging quality and reduce contrast dosage and radiation dose.
