摘要
目的使用基于深度学习的AccuContour软件自动勾画胸腹部肿瘤患者正常胃和胸腔胃结构,对勾画效果进行评估和比较。方法选取36例胸腹部肿瘤患者,分为2组,其中18例正常胃患者为A组,其余18例食管癌术后胸腔胃患者为B组。使用AccuContour软件在患者的定位CT图像上自动勾画胃结构,对自动勾画和手工勾画的体积差异、位置差异、形状一致性进行统计分析,对2种胃结构的自动勾画效果进行比较。结果A组患者自动和手工2种勾画方式的体积差异△V%为(-1.82±9.65)%,总位置差异ΔL为(0.51±0.37)cm,Dice相似性系数(Dice similarity coefficient,DSC)为0.89±0.04。对A组和B组数据进行秩和检验比较,△V%、ΔL和DSC值均有统计学差异(P<0.05)。结论本研究所用版本的AccuContour软件,对于大于一定体积的正常胃结构有较好的自动勾画效果,而对食管癌术后胸腔胃结构不能进行有效自动勾画。
Objective To delineate the normal stomach and thoracic stomach structure of patients with thoracic and abdominal tumor automatically using the AccuContour software based on deep learning in order to evaluate and compare the results.Methods Thirty-six patients with choracic and abdominal tumors were chosen for this study,and were divided into two groups.Group A included 18 patients with normal stomach,and group B included the other 18 patients undergoing esophageal carcinoma operation with thoracic stomach.The stomach structures were automatically delineated by the AccuContour software in the simulation CT series.Statistical analysis was carried out to data of the differences in volume,position and shape between the automatic and manual delineations,and data of the two kinds of stomach were compared.Results For group A,the differences in volume(ΔV%)between the automatic and manual delineations was(−1.82±9.65)%,the total position difference(ΔL)was(0.51±0.37)cm,the values of dice similarity coefficient(DSC)was 0.89±0.04.There were significant differences in values ofΔV%、ΔL and DSC(P<0.05).Conclusion The used version of AccuContour software in this study had a satisfactory result of automatic delineation of the normal stomach structure larger than certain volume,but could not delineate the thoracic stomach structures effectively for patients undergoing esophageal carcinoma operation.
作者
秦伟
庄洁颖
时飞跃
赵紫婷
王敏
赵环宇
魏晓为
QIN Wei;ZHUANG Jieying;SHI Feiyue;ZHAO Ziting;WANG Min;ZHAO Huanyu;WEI Xiaowei(Radiation Therapy Center,Nanjing First Hospital,Nanjing Medical University,Nanjing 210006 China;Center of Medical Physics with Nanjing Medical University,Nanjing 210029 China;Department of Medical Equipment,Nanjing First Hospital,Nanjing Medical University,Nanjing 210006 China)
出处
《中国辐射卫生》
2021年第3期264-268,共5页
Chinese Journal of Radiological Health
基金
国家自然科学基金面上项目(81773240)
江苏省自然科学基金面上项目(BK20181118)。
关键词
自动勾画
胃
胸腔胃
放射治疗
Automatic Delineation
Stomach
Thoracic Stomach
Radiotherapy
作者简介
秦伟(1983—),男,江苏南京人,主管技师,从事放疗物理师工作,E-mail:15952018373@163.com;通信作者:时飞跃,E-mail:shifeiyue2013@126.com。
