目的:分析3D智能管电流(3D smart mA)调控技术对不同体质量指数(BMI)患者图像采集时间、质量及辐射剂量的影响。方法:择取的 180 例行胸部CT扫描患者选自西安交通大学第一附属医院2021 年6 月至2022 年12 月期间所收治，按照BMI将患者分为三组，A组(18。5 kg/m2≤BMI≤23。9kg/m2，n=75)、B组(23。9kg/m2<BMI≤26。9 kg/m2，n=62)、C 组(26。9 kg/m2<BMI≤30。5 kg/m2，n= 43)。所有患者均使用 3D smart mA 调控技术，对比三组图像采集时间、图像采集质量以及辐射剂量。结果:三组图像采集时间比较，差异无统计学意义(F=2。573，P>0。05);两位医师对肺部不同层面图像质量(IQS)评分进行评价，Kappa 一致性非常好(Kappa 值= 0。768、0。812、0。861);三组肺部不同层面IQS评分对比，差异无统计学意义(P>0。05);三组肺部不同层面 CT 对比，差异有统计学意义，且随着BMI增加而下降(P<0。05)，三组肺部不同层面图像标准差(SD)值对比，差异无统计学意义(P>0。05);三组容积CT剂量指数(CTDIvol)对比，差异无统计学意义(P>0。05);A 组 DLP、ED 均低于 B、C 组，B组DLP、ED低于C组(P<0。05)。结论:不同BMI患者应用 3D smart mA 调控技术，在保证图像质量的前提下，可有效降低辐射剂量。
Effects of 3D Smart mA Modulation Technology on Image Acquisition Time,Quality and Radiation Dose of Patients with Different BMI
Objective:To analyze the effects of 3D smart mA modulation technology on image acquisition time,quality and radiation dose of patients with different body mass index(BMI).Methods:A total of 180 patients undergoing chest CT scans at The First Affiliated Hospital of Xi'an Jiaotong University from June 2021 to December 2022 were selected.Patients were divided into three groups based on BMI:Group A(18.5 kg/m2≤BMI≤23.9 kg/m2,n=75),Group B(23.9 kg/m2<BMI≤26.9 kg/m2,n=62),and Group C(26.9 kg/m2<BMI≤30.5 kg/m2,n=43).All patients used 3D smart mA modulation technology,and the image acquisition time,image quality,and radiation dose were compared among the three groups.Results:There was no statistically significant difference in image acquisition time among the three groups(F=2.573,P>0.05).Two physicians evaluated the image quality scores(IQS)of different pulmonary parts,with high consistency(Kappa values=0.768,0.812,0.861).There was no statistically significant difference in the IQS scores for different pulmonary parts among the three groups(P>0.05).There were statistically significant differences in CT values of different pulmonary parts among the three groups,and the values decreased with the increase of BMI(P<0.05).There was no statistically significant difference in the standard deviation(SD)of different pulmonary parts,or volume CT dose index(CTDIvol)among the three groups(P>0.05).DLP and ED increased in order from group A,group B to group C(P<0.05).Conclusion:Applying 3D smart mA modulation to patients with different BMI can effectively reduce radiation dose on the premise of en-suring image quality.
3D smart mA modulationBody mass indexImage acquisition time and qualityRadiation dose
国家科技期刊平台
NSTL
万方数据
维普
