摘要
目的 探讨被检者个体因素对胸部CT辐射剂量的影响。方法 按照临床胸部扫描方案为基准,前贍性收集103例成人被检者资料,包括性别、年龄、身高、体重,记录每位被检者的剂量长度乘积(DLP),将所得数据进行多元回归分析。结果 图像质量对胸部CT辐射剂量无显著影响(P=0.407>0.05),对胸部CT辐射剂量有显著影响的个体因素是体重(P=5.52E-21<0.05)和年龄(P=8.08E-8<0.05),体重每增加1kg,DLP会增加5.543;年龄每递增1岁,DLP会增加2.191。结论 影响胸部CT辐射剂量的个体因素主要为:年龄、体重,他们与辐射剂量存在一定的线性关系,利用这一特定关系,为指导降低被检者的辐射剂量具有重要临床意义。
Objective To explore the influence of patient’s individual factors on the radiation dose in chest CT scan.Methods Based on the clinical chest CT scan scheme,the general data of 103 adult were prospectively collected,including gender,age,height,weight.Multivariate regression analysis was made on the doselength product(DLP) of each chest CT scan with the same scanning parameters.Results There was no significa nt correlation between image quality and chest radiation dose(P=0.407>0.05),the major impact individual factors of radiation dose in chest CT scan were weight(P=5.52 E-21<0.05)and age(P=8.08 E-8<0.05):1 kg increase in weight was associated with 5.543 mGy-cm increase in the DLP value;gradually increase in age was related with 2.191 mGy-cm increase in the DLP value.Conclusion For chest CT,age and weight are the major impact individual factors of radiation dose.The linear relationship between radiation dose with age and weight is significance to guide clinical application of patient protection.
作者
梁旭晴
姜阳
陈玉洪
佘济
张德川
LIANG Xu-qian;JIANG Yang;CHEN YU-hong;SHE Ji;ZHANG De-chuan(Department of Radiology,Chongqing Hospital of Traditional Chinese Medicine,Chongqing 400021,China)
出处
《中国CT和MRI杂志》
2022年第9期106-108,共3页
Chinese Journal of CT and MRI
基金
成都中医药大学2019年度“杏林学者”医院专项(YYZX2019082)。
