Protection effect of a new 360-degree radiation protection device on the pelvic cavity during chest CT examination
10.13406/j.cnki.cyxb.003748
- VernacularTitle:一种新型360°辐射防护装置用于胸部CT检查对盆腔的辐射防护效果
- Author:
Wen LI
1
;
Xinyu LI
;
Ziyu ZUO
;
Xiaoqin ZHANG
;
Qian YANG
;
Chuan LIU
Author Information
1. 重庆医科大学附属第一医院放射科,重庆 400016
- Keywords:
radiation protection;
radiation dose;
X-ray computed;
body section radiography
- From:
Journal of Chongqing Medical University
2025;50(9):1297-1302
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the protection effect of a new 360-degree radiation protection and position fixation device on the pelvic cavity during chest CT examination.Methods:Three shielding methods were applied to the pelvic cavity of the standard simu-lated human model,i.e.,no shielding(group A),traditional 180-degree front protection with a lead square towel(group B),and 360-degree protection with a new protection device(group C).Philips IQon Spectral CT was used to perform chest CT scan at a tube voltage of 80 kVp,100 kVp,and 120 kVp,respectively,and the cumulative radiation doses from the front,side,and back of the pelvic cavity were measured and analyzed statistically.Results:Compared with groups A and B,group C had significantly lower cumulative radiation doses of the front,side,and back of the pelvic cavity in the simulated human model(all P<0.05);at the tube voltages of 80,100,and 120 kVp,the cumulative dose of the pelvic cavity in group C was reduced by 85%,84%,and 67%,respectively,compared with that in group B,and was reduced by 88%,87%,and 76%,respectively,compared with that in group A.Compared with group A,group B had significant reductions in the radiation doses of the side and back of the pelvic cavity(P<0.05)and a significantly higher radiation dose of the front of the pelvic cavity,which was increased by 19%,23%,and 10%,respectively,at the tube voltages of 80,100,and 120 kVp,and there were significant differences in all tube voltage conditions(P<0.05)except under the tube voltage condition of 120 kVp(P=0.190).In addition,after the application of the device for protection,the reduction rate of pelvic radiation dose under the tube voltages of 80 and 100 kVp was higher than that under the tube voltage of 120 kVp.Conclusion:The new 360-degree radiation protection and position fixation device can significantly reduce the cumulative radiation dose of pelvic organs during chest CT scan,and it holds promise for clinical application due to its characteristics of conve-nient wearing and fixed patient position.
