低剂量胸腹主动脉混合现实优化成像的可行性研究  

Feasibility Study on Low-Dose Mixed Reality Optimized Imaging of Thoracoabdominal Aorta

作　　者：李冠 缪倩 王金宝 秦国初[1] 王昊鹏 LI Guan;MIAO Qian;WANG Jinbao(Department of Radiology,Nanjing Drum Tower Hospital,Affiliated Hospital of Medical School,Nanjing University,Nanjing,Jiangsu Province 210008,P.R.China)

机构地区：[1]南京大学医学院附属鼓楼医院医学影像科,210008 [2]东部战区总医院麻醉科,南京210002 [3]北部战区总医院放射诊断科,沈阳110016

出　　处：《临床放射学杂志》2024年第9期1591-1596,共6页Journal of Clinical Radiology

基　　金：南京鼓楼医院临床研究专项资金项目(编号:2024-LCYJ-MS-27);东部战区总医院临床诊疗新技术项目(编号:22LCZLXJS9)。

摘　　要：目的探讨低剂量CT技术实现胸腹主动脉混合现实成像的可行性研究。方法前瞻性搜集拟行胸腹主动脉混合现实成像的患者67例,随机分为A、B两组,A组(常规剂量胸腹主动脉混合现实组,n=32)和B组(低剂量胸腹主动脉混合现实组,n=35)。A组采用120 kVp,B组采用80 kVp,将两组生成的CT数据导入到可视化三维(3D)建模软件进行3D建模,并进行混合现实结果显示。两组患者的人口学特征比较采用独立样本t检验;混合现实质量的主观评价采用Mann-Whitney U检验,评价者采用Kappa分析进行一致性比较。结果两组间在年龄、身高、体重、性别及身体质量指数(BMI)指标上均未见明显差别(P均>0.05)。B组方案生成的胸腹主动脉混合现实辐射剂量较A组方案减少约59%。两组方案生成的胸腹主动脉混合现实质量未见明显差异(P>0.05)。评分者的主观一致性较好,Kappa值为0.631~0.829。结论低剂量CT技术可有效应用于胸腹主动脉混合现实中,保证胸腹主动脉混合现实质量的同时,大幅减少患者所受的辐射剂量,为胸腹主动脉混合现实技术的广泛推广提供保障。Objective To explore the feasibility of low-dose CT technology to realize mixed reality imaging of thoracoabdominal aorta.Methods Sixty-seven patients with mixed reality imaging of thoracoabdominal aorta were prospectively collected and randomly divided into two groups:group A(conventional dose mixed reality group of thoracoabdominal aorta,n=32)and group B(low dose mixed reality group of thoracoabdominal aorta,n=35).Group A uses 120 kVp and Group B uses 80 kVp.The CT data generated by the two groups were imported into the three-dimensional(3D)modeling software for 3D modeling,and the mixed reality results were released.The demographic characteristics of the two groups of patients were compared by independent sample t test.The subjective evaluation of mixed reality quality adopts Mann-Whitney U test,and the evaluator uses Kappa analysis to compare the consistency.Results There was no significant difference in age,height,weight,sex and body mass index(BMI)between the two groups(all P>0.05).Compared with group A,the mixed reality radiation dose of thoracoabdominal aorta generated by group B is reduced by about 59%.There was no significant difference in the mixed reality quality of thoracoabdominal aorta generated by the two protocols(P>0.05).The subjective consistency of the evaluators were good,with Kappa values ranging from 0.631 to 0.829.Conclusion Low-dose CT technology can be effectively applied to the thoracoabdominal aorta mixed reality,ensuring the quality of the thoracoabdominal aorta mixed reality,while significantly reducing the radiation dose received by patients,and providing guarantee for the wide promotion of the thoracoabdominal aorta mixed reality technology.

关 键 词：低剂量 胸腹主动脉 三维重组 混合现实 

分 类 号：R816.2[医药卫生—放射医学] R543.1[医药卫生—临床医学]