摘要
目的 比较3种自动勾画图像分割软件(rtStation、AccuContour、RT-Mind)与手动勾画对胸部肿瘤危及器官(Organs atRisk,OARs)的勾画效果。方法 选取解放军总医院第五医学中心放疗科行胸部肿瘤放疗患者15例,由肿瘤放疗医生手动勾画OARs,经确认后以此勾画结果作为参考标准,再分别应用3种图像分割软件勾画OARs,比较手动勾画与自动勾画的时间、Dice相似性系数(Dice Similarity Coefficient,DSC)和Hausdroff距离(Hausdorff Distance,HD)。结果 3种自动勾画软件勾画速度比较:AccuContour>RT-Mind>rtStation,勾画时间均在3 min内完成,而人工勾画需30 min左右。3种自动勾画软件对心脏、左肺、右肺、脊髓的勾画效果较好,DSC均在0.85以上,但对食管和气管的勾画效果较差,且AccuContour、RT-Mind软件在勾画心脏、脊髓的DSC显著高于rtStation软件(P<0.05);在勾画左肺和右肺的DSC方面,AccuContour软件显著优于rtStation、RT-Mind软件(P<0.05)。3种自动勾画软件脊髓HD值最小,气管HD值最大,但AccuContour、RT-Mind软件的脊髓HD均显著低于rt Station软件(P<0.05);rt Station软件的心脏HD显著高于Accu Contour、RT-Mind软件(P<0.05);3种自动勾画软件的食管HD均低于2 cm,且AccuContour软件显著优于rtStation、RT-Mind软件(P<0.05);对于左、右肺,RT-Mind软件HD均超过2 cm,显著高于rtStation、AccuContour(P<0.05),勾画效果较差。结论 3种图像分割软件在胸部OARs自动勾画时,食管和气管勾画效果基本满意,但需要医师手动修改,软件有待进一步提高;心脏、肺和脊髓勾画效果理想,图像分割软件能够提高医师工作效率。
Objective To compare the delineation effect between three automatic delineation software(rtStation,AccuContour,RTMind)and manual delineation on thoracic organs at risk(OARs).Methods A total of 15 patients with thoracic tumor radiotherapy in the Department of Radiotherapy of Fifth Medical Center of PLA General Hospital were selected.OARs were manually sketched by the radiotherapy oncologists.After confirmation,the sketching results were used as the reference standard,and then OARs were sketched by three kinds of image segmentation software.The time,Dice similarity coefficient(DSC)and Hausdorff distance(HD)of manual and automatic sketching were compared.Results The speed of the three automatic contouring software was AccuContour>RT-Mind>rtStation,and the contouring time was all completed within 3 min,while manual contouring took about 30 min.The three kinds of automatic contour software had good delineation effect for heart,left lung,right lung and spinal cord,with DSC above 0.85,but poor delineation effect for esophagus and trachea,and the DSC of AccuContour and RT-Mind software in delineating heart and spinal cord was significantly higher than that of rtStation software(P<0.05).AccuContour software was significantly superior to rtStation and RT-Mind software in DSC mapping of left and right lung(P<0.05).The spinal cord HD values of the three automatic contour software were the lowest,and the tracheal HD value was the highest,but the spinal cord HD values of AccuContour and RT-Mind software were significantly lower than those of rtStation software(P<0.05).The cardiac HD of rtStation software was significantly higher than that of AccuContour and RT-Mind software(P<0.05).The esophageal HD of the three kinds of automatic contour software was lower than 2 cm,and AccuContour software was significantly better than rtStation and RT-Mind software(P<0.05).For left and right lung,RT-Mind software HD exceeded 2 cm,which was significantly higher than rtStation and AccuContour(P<0.05),and the contour effect was poor.Conclusion When the three kinds of image segmentation software were used to sketch the chest OARs automatically,the auto-segmentation results of esophagus and trachea are basically satisfactory,but need to be manually modified by radiation oncologist,which needs to be further improved.All three image segmentation can satisfactorily contour the heart,lungs and spinal cord,which can improve the work efficiency for radiation oncologist.
作者
高文超
王军良
郑倩倩
曹井丽
李建雄
GAO Wenchao;WANG Junliang;ZHENG Qianqian;CAO Jingli;LI Jianxiong(Department of Radiation Oncology,Fifth Medical Center of PLA General Hospital,Beijing 100071,China;Department of Radiation Oncology,Beijing Shijingshan Hospital,Beijing 100043,China)
出处
《中国医疗设备》
2023年第7期50-54,85,共6页
China Medical Devices
基金
“十三五”国家重点研发计划(2017YFC0113702)。
