The application value of low-dose CT in children with ankle fractures
10.3969/j.issn.1673-9701.2025.09.008
- VernacularTitle:低剂量CT在儿童踝关节骨折中的应用价值
- Author:
Feng CHEN
1
;
Yuzhen JIN
;
Qidi WANG
;
Ting WENG
Author Information
1. 杭州市儿童医院放射科,浙江 杭州 310014
- Publication Type:Journal Article
- Keywords:
Radiation dosage;
Image quality;
Low-dose CT;
Childhood ankle fracture;
Accuracy
- From:
China Modern Doctor
2025;63(9):33-36,54
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyse impact of low-dose CT on radiation dose and image quality of ankle fractures in children.Methods 600 suspected ankle fracture children admitted to Hangzhou Children's Hospital were selected as the research subjects from January to December 2023.All children needed to undergo conventional dose CT examination and low-dose CT examination.Image quality,radiation dose,diagnostic accuracy,and diagnostic efficacy of conventional dose CT and low-dose CT examination were compared.Results No significant difference was found between conventional-dose CT examination and low-dose CT examination in objectivity image quality index(P＞0.05).Effective dose,dose length product,and volume CT dose index of low-dose CT examination were all lower than those of conventional dose CT examination,and the difference was statistically significant(P＜0.05).The diagnostic accuracy of low-dose CT examination and conventional dose CT examination showed no significant difference(P＞0.05).Low-dose CT examination compared with conventional dose CT examination,there was no significant difference in diagnostic specificity(P＞0.05),while there was significant difference in diagnostic sensitivity and accuracy(P＜0.05).Area under the curve of effective dose,dose length product,volume CT dose index alone and combined diagnosis of ankle fractures in children were 0.899(95％CI:0.880-0.918),0.934(95％CI:0.918-0.950),0.928(95％CI:0.911-0.945),and 0.934(95％CI:0.918-0.950),respectively.Conclusion Low-dose CT examination technology has high diagnostic value for ankle fractures in children,can reduce radiation dose,and has little impact on image quality and diagnostic accuracy.It is worth popularizing and applying.
