摘要
目的·探讨自动管电流调制(automatic tube current modulation,ATCM)降低髋关节机器人CT辐射剂量的可行性,并系统评估其对图像质量的影响。方法·纳入南京鼓楼医院2021年11月至2024年10月进行髋机器人CT检查的患者共106例。采用随机分组设计,将全部受检者随机分为2组,A组(56例)使用ACTM扫描,B组(50例)使用部分固定管电流扫描(髋关节)。以容积CT剂量指数(volume CT dose index,CTDIvol)和辐射长度乘积(dose-length product,DLP)作为辐射剂量评估指标,以图像信噪比(signal-to-noise ratio,SNR)、对比信噪比(contrast signal to ratio,CNR)和客观噪声作为图像质量评估指标。比较2组患者的年龄、性别、体质量指数(body mass index,BMI)、扫描长度、CTDIvol、DLP、SNR、CNR、客观噪声、建模图像合格率。结果·2组患者的性别、年龄、BMI、扫描长度、图像建模合格率、SNR、CNR、客观噪声比较,差异均无统计学意义(均P>0.05)。A组的髋关节CTDIvol和DLP低于B组,差异有统计学意义(均P<0.001)。结论·使用ACTM技术进行髋关节机器人术前CT扫描,可显著降低辐射剂量,同时保证CT图像质量满足髋关节机器人术前建模需要。
Objective·To evaluate the feasibility of automatic tube current modulation(ATCM)in reducing radiation dose during preoperative CT imaging for robotic-assisted hip arthroplasty and to assess its impact on image quality.Methods·A total of 106 patients undergoing CT scans for robotic-assisted hip arthroplasty at Nanjing Drum Tower Hospital(from November 2021 to October 2024)were prospectively enrolled.Participants were randomly divided into Group A(n=56)and Group B(n=50).The patients in Group A underwent ATCM scanning,and the patients in Group B underwent partial fixed tube current scanning for hip imaging.Radiation dose parameters included volume CT dose index(CTDIvol)and dose-length product(DLP).Image quality was evaluated using signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),and objective noise.Age,gender,body mass index(BMI),scan length,CTDIvol,DLP,SNR,CNR,noise,and image qualification rate were compared between the two groups.Results·No statistically significant differences were observed between the two groups in baseline characteristics(gender,age,and BMI),scan length,image qualification rate,SNR,CNR,or objective noise(all P>0.05).However,Group A demonstrated significantly lower CTDIvol and DLP compared to Group B(both P<0.001).Conclusion·The use of ATCM in preoperative CT imaging for robotic-assisted hip surgery significantly reduces radiation dose while maintaining image quality sufficient for 3D modeling requirements.
作者
胡杰
杨献峰
HU Jie;YANG Xianfeng(Department of Radiology,Nanjing Drum Tower Hospital,Clinical College of Nanjing Medical University,Nanjing 210008,China;Department of Radiology,the Affiliated Drum Tower Hospital of Nanjing University Medical School,Nanjing 210008,China;Jiangsu Research Institute of Sports Science,Nanjing 210029,China)
出处
《上海交通大学学报(医学版)》
北大核心
2025年第11期1502-1506,共5页
Journal of Shanghai Jiao tong University:Medical Science
基金
江苏省体育局重大体育科研课题(STT221107)
上海市人类运动能力开发与保障重点实验室开放课题(11DZ2261100)
江苏省博士后科研资助计划(2021-188)。
关键词
髋关节
机器人辅助技术
自动管电流调制
辐射剂量
hip joint
robotic-assistive technology
automatic tube current modulation
radiation dose
