摘要
目的探讨一种基于医学的3D打印重构软件(Arigin3D Pro)重建骨骼模型精度的评价方法。方法选取猪股骨作为实体骨模型,使用CT和MRI设备分别扫描,并将扫描数据导入Arigin3D Pro进行三维模型重构。选取3名经验不同(重构经验分别为≤1年、2~3年和≥4年)的操作者均对猪股骨重构3次,且每重构1次分别使用第三方软件Geomagic Wrap和Arigin3D Pro分别测量股骨头直径、股骨体长度、股骨远端膝关节宽度各3次;实体模型参数使用游标卡尺进行测量。记录、比较重构模型与实体模型的参数值,并进行差异分析。结果Geomagic Wrap测量:经CT和MRI扫描重构出的模型均与实体模型有一定的偏差,偏差百分比绝对值分别为1.47%和1.08%。操作者3次重构间的偏差百分比为0.29%~1.53%;不同重构经验的操作者间重构的三维模型有差异。结论Arigin3D Pro重构的模型与动物实体骨的特征尺寸直接比较的方法可用于直观分析重构精度,且基于CT和MRI影像下骨骼模型的医学三维重建模型误差在可控范围,骨骼重建模型精度与操作者相关。
Objective To investigate the feasibility of an accuracy evaluation method for 3D reconstructed bone model based on 3D reconstruction software Arigin3D Pro. Methods Pig femurs were used as solid models which were scanned by CT and MRI respectively. The scan data were imported into software Arigin3D Pro for 3D model reconstruction by 3 operators with different reconstruction experience (≤1 year, 2 to 3 years, and ≥4 years, respectively). Each operator reconstructed the femurs 3 times and in each reconstruction measured the diameter of the femoral head, the length of the femur and the width of the knee joint at the distal end of the femur 3 times respectively using software Geomagic Wrap. The above parameters of the solid models were measured using a vernier caliper. The parameter values of reconstructed models and solid models were compared and the differences were analyzed. Results The measurements by Geomagic Wrap showed deviations between the CT and MRI reconstruction models and the solid models, and the maximum deviation percentages were 1.47% and 1.08%, respectively. The percentages of intra-operater difference ranged from 0.29% to 1.53%;the 3D models reconstructed by operators with different reconstruction experience were not identical. Conclusions It is a feasible accuracy evaluation method to compare key parameters between the 3D bone model reconstructed by software Arigin3D Pro and the real animal bone. The deviations of 3D reconstructed bone model based on CT and MRI images are acceptable. The accuracy of 3D bone construction is related to the difference in operators.
作者
许苑晶
刘至原
柳毅浩
杨泽政
万克明
刘非
王金武
戴尅戎
Xu Yuanjing;Liu Zhiyuan;Liu Yihao;Yang Zezheng;Wan Keming;Liu Fei;Wang Jinwu;Dai Kerong(Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, The Ninth People's Hospital of Shanghai, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China;Shanghai Jiao Tong University School of Biomedical Engineering, Shanghai 200030, China;Xi'an Jiao Tong University Suzhou Academy, Suzhou 215123, Jiangsu, China)
出处
《中华创伤骨科杂志》
CAS
CSCD
北大核心
2019年第10期894-900,共7页
Chinese Journal of Orthopaedic Trauma
基金
国家重点研发计划(2018YFB1105600)
上海教委重点学科建设基金(J50206)
2016年上海申康第一轮促进市级医院临床技能与临床创新三年行动计划(16CR3088B).
关键词
骨骼
软件
成像
三维
医学图像
精度
Skeleton
Software
Imaging, three-dimensional
Medical images
Accuracy
