Analysis of radiation dose and the influencing factors in cone beam breast CT
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 approxi-mately 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.
cone beam breast computed tomographydigital mammographydigital breast tomosynthesisradiation dose
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