锥光束乳腺CT的辐射剂量和影响因素分析  

Analysis of radiation dose and the influencing factors in cone beam breast CT

作　　者：周春妍 李姣 何妮[1] 伍尧泮[1] ZHOU Chunyan;LI Jiao;HE Ni;WU Yaopan(Department of Imaging,Sun Yat-Sen University Cancer Center,Guangzhou 510060,China)

机构地区：[1]中山大学肿瘤防治中心影像科,广东广州510060

出　　处：《实用放射学杂志》2025年第1期133-137,共5页Journal of Practical Radiology

摘　　要：目的探讨锥光束乳腺CT(CBBCT)的辐射剂量及乳腺密度、长度和厚度对CBBCT辐射剂量的影响。方法回顾性分析175例接受CBBCT、数字乳腺X线摄影(DM)和数字乳腺断层摄影(DBT)检查的乳腺癌患者,记录受检者腺体密度、乳腺长度、厚度和辐射剂量。比较CBBCT和DM、DBT的辐射剂量差异,不同腺体密度、乳腺长度和厚度间的CBBCT辐射剂量差异。结果CBBCT和DM的辐射剂量差异有统计学意义(P<0.001),CBBCT和DBT的辐射剂量无显著差异(P>0.05)。不同腺体密度和厚度间CBBCT的辐射剂量无显著差异(P<0.05)。乳腺长度与CBBCT的辐射剂量呈正相关(P<0.001)。结论CBBCT的辐射剂量高于DM,相对于DM增加了1倍,CBBCT和DBT的辐射剂量差异无统计学意义。并且随着乳腺长度的增加,CBBCT辐射剂量逐渐增高。Objective To explore the radiation dose of cone beam breast computed tomography(CBBCT)and the effect of breast density,length,and thickness on the radiation dose of CBBCT.Methods A retrospective analysis was conducted on 175 patients with breast cancer who underwent CBBCT,digital mammography(DM)and digital breast tomosynthesis(DBT)examinations.Breast density,length,thickness,and radiation dose of the patients were recorded.The differences in radiation dose between CBBCT and DM,as well as CBBCT and DBT were compared.Additionally,the differences in CBBCT radiation dose among different breast density,length,and thickness were compared.Results The difference in radiation dose between CBBCT and DM was statistically significant(P<0.001),while no statistically significant difference between CBBCT and DBT(P>0.05).The radiation dose of CBBCT did not show any significant variation across different breast density and thickness(P<0.05).Breast length was positively correlated with the radiation dose of CBBCT(P<0.001).Conclusion The radiation dose of CBBCT is higher than that of DM,which is approximately doubled,the difference in radiation dose between CBBCT and DBT is not statistically significant.Additionally,with the increase of breast length,the radiation dose of CBBCT gradually increase.

关 键 词：锥光束乳腺CT 数字乳腺X线摄影 数字乳腺断层摄影 辐射剂量 

分 类 号：R814.42[医药卫生—影像医学与核医学] R816.4[医药卫生—放射医学]