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重庆医科大学附属第一医院放射科,重庆 400016
李 文,Email:liwencqmu@163.com,研究方向:CT影像技术及辐射防护。
刘 传,Email:335276166@qq.com。
收稿:2024-04-15,
修回:2024-10-17,
录用:2024-10-28,
纸质出版:2025-09-28
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李文,李欣雨,左子钰,等.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[J].重庆医科大学学报,2025,50(9):1297-1302.
Li Wen,Li Xinyu,Zuo Ziyu,et al.Protection effect of a new 360-degree radiation protection device on the pelvic cavity during chest CT examination[J].Journal of Chongqing Medical University,2025,50(9):1297-1302.
李文,李欣雨,左子钰,等.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[J].重庆医科大学学报,2025,50(9):1297-1302. DOI: 10.13406/j.cnki.cyxb.003748.
Li Wen,Li Xinyu,Zuo Ziyu,et al.Protection effect of a new 360-degree radiation protection device on the pelvic cavity during chest CT examination[J].Journal of Chongqing Medical University,2025,50(9):1297-1302. DOI: 10.13406/j.cnki.cyxb.003748.
目的
2
探讨一种新型360°辐射防护及体位固定装置用于胸部CT检查对盆腔的辐射防护效果。
方法
2
对标准仿真人体模盆腔行无屏蔽防护(A组)、传统铅方巾180°正面防护(B组)和新型防护装置360°防护(C组)3种屏蔽方式,在Philips IQon Spectral CT分别采用80、100、120 kVp 3种管电压进行胸部CT扫描,测量盆腔正面、侧面、背面的辐射剂量并进行统计学分析。
结果
2
C组仿真人体模盆腔正面、侧面、背面及累计辐射剂量均明显低于B组和A组,差异均有统计学意义(均
P
<
0.05);在80、100、120 kVp 3种管电压下,C组相较于B组分别降低85%、84%、67%,C组相较于A组分别降低88%、87%、76%;B组与A组比较,盆腔侧面、背面的辐射剂量降低,差异有统计学意义(均
P
<
0.05),但盆腔正面辐射剂量B组高于A组,80、100、120 kVp分别增加19%、23%、10%,除120 kVp管电压条件下差异无统计学意义(
P
=0.190),其余管电压条件下差异均有统计学意义(均
P
<
0.05)。另,80和100 kVp管电压条件下新装置防护后盆腔的辐射剂量下降率高于120 kVp组。
结论
2
新型360°辐射防护及体位固定装置在胸部CT扫描时可明显降低盆腔脏器的累计辐射剂量,结合其穿戴便捷、固定患者体位等特点,值得推广应用。
Objective
2
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
2
Three shielding methods were applied to the pelvic cavity of the standard simulated 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
2
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
2
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 convenient wearing and fixed patient position.
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