Feasibility of direct low-dose CT thyroid protection scanning technology for detecting lower respiratory tract infectious diseases in children
10.13929/j.issn.1672-8475.2025.06.004
- VernacularTitle:直接低剂量CT甲状腺保护扫描技术用于检查儿童下呼吸道感染性疾病的可行性
- Author:
Hongde LI
1
;
Hong WANG
1
;
Kang ZHU
1
;
Aili CHANG
1
Author Information
1. 淄博齐都医院影像中心,山东 淄博 255400
- Publication Type:Journal Article
- Keywords:
child;
respiratory tract infections;
radiation dosage;
thyroid gland;
tomography,X-ray computed
- From:
Chinese Journal of Interventional Imaging and Therapy
2025;22(6):385-388
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the feasibility of direct low-dose CT thyroid protection scanning technology for detecting lower respiratory tract infectious diseases in children.Methods A total of 1 128 children who underwent CT chest examination due to suspected lower respiratory tract infectious diseases were enrolled and divided into 2 groups according to scanning scheme,which in group A(n=1 088)covered the whole lung apex and used conventional or direct low-dose scanning techniques,while in group B(n=40)did not include lung apex(the starting line located horizontally at the upper edge of manubrium sterni)and adopted direct low-dose scanning technique.Forty children in group A with age and gender matched with those in group B who received direct low-dose CT scanning were taken as group A1.The property of lung apex lesions and whether the lesions impacted the diagnostic outcomes in group A,as well as the display of thyroid gland in both group A and B were analyzed.Radiation dosage was compared between group A1 and group B.Results The radiation dose in group B was 22.1-35.6 mGy,with an average of(28.34±2.86)mGy,significantly lower than that in group A1(29.1-44.3 mGy,with an average of[34.71±3.07]mGy,P＜0.001).Among 1 088 cases in group A,CT showed lung apex lesions in 54 cases(54/1 088,4.96%),including 49 cases(49/1 088,4.50%)of inflammatory,4 cases(4/1 088,0.37%)of linear atelectasis and 1 case(1/1 088,0.09%)of space-occupying,all were expended from other lung lobe and did not impact final imaging diagnosis.Thyroid gland was displayed in 1 046 cases(1 046/1 088,96.14%)in group A(including 40 cases in group A1),which was not displayed in all 40 cases(40/40,100%)in group B.The display rate of thyroid gland in group A1 was significantly higher than that in group B(χ2=80.000,P＜0.001).Conclusion Direct low-dose CT thyroid protection scanning technology was feasible for detecting lower respiratory tract infectious diseases in children,which could reduce radiation dose and protect thyroid from ionizing radiation damage.
