[1]赵志键,樊庆文,王德麾,等. 辐射等效假人数字化建模方法[J].中国医学物理学杂志,2018,35(3):275-280.[doi:DOI:10.3969/j.issn.1005-202X.2018.03.006]
　ZHAO Zhijian,FAN Qingwen,WANG Dehui,et al. Digital modeling method for establishing a radiation equivalent manikin[J].Chinese Journal of Medical Physics,2018,35(3):275-280.[doi:DOI:10.3969/j.issn.1005-202X.2018.03.006]
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 辐射等效假人数字化建模方法()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
35卷
期数:
2018年第3期
页码:
275-280
栏目:
医学影像物理
出版日期:
2018-03-20

文章信息/Info

Title:
 Digital modeling method for establishing a radiation equivalent manikin
文章编号:
1005-202X（2018）03-0275-06
作者:
 赵志键; 樊庆文; 王德麾; 李海博; 裴宏亮
 四川大学制造科学与工程学院， 四川 成都 610065
Author(s):
 ZHAO Zhijian;  FAN Qingwen;  WANG Dehui;  LI Haibo;  PEI Hongliang
 School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China
关键词:
 ; 辐射等效假人; 数字化建模; 坐标系变换; 三维模型; pro/E
Keywords:
 ; radiation equivalent manikin;  digitized modeling;  coordinate transformation;  three-dimensional model;  pro/E
分类号:
R32；TB1
DOI:
DOI:10.3969/j.issn.1005-202X.2018.03.006
文献标志码:
A
摘要:
 辐射等效假人主要依靠手工制作，生产周期长、加工精度低，无法满足参数化设计的要求，而通过建立辐射等效假人数字化模型可以有效解决这些问题。以“成都剂量体模”CT扫描切片集为基础，建立辐射等效假人的扫描坐标系[os-xs,ys,zs]，利用Mimics软件重建人体主要器官和组织的三维模型；以器官的几何中心点为坐标系原点，根据器官的“特征点”建立器官局部坐标系[(oJ-xJ,yJ,zJ)]，利用器官“特征点”在扫描坐标系和局部坐标系的坐标值，计算两个坐标系的变换矩阵；根据人体解剖学方位建立辐射等效假人的人体坐标系[(or-xr,yr,zr)]，利用“控制点”在扫描坐标系与人体坐标系中的坐标值计算扫描坐标系与人体坐标系的变换矩阵，进而推导出器官局部坐标系与人体坐标系的变换矩阵。至此可以得到不同器官在人体坐标系中的几何参数，包括器官几何中心点坐标值以及局部坐标系与人体坐标系的旋转角。根据不同器官和组织的三维模型及其几何参数在pro/E软件中建立辐射等效假人数字化模型。建立辐射等效假人数字化模型可以实现辐射等效假人的数字化设计和制造，提高加工精度，缩短生产周期，并为辐射仿真假人的参数化设计打下基础，具有重要的理论意义和实用价值。
Abstract:
 As a result of manual mode, the manufacture of radiation equivalent manikin is time-consuming, precision-poor and unable to meet the requirements of parametric design. Therefore, we establish a digital model of radiation equivalent manikin to solve the above-mentioned problems. Firstly, the computed tomography sequence slice sets of Chengdu Dosimetric Phantom were taken as the basic data to establish a scanning coordinate system[os-xs,ys,zs]of radiation equivalent manikin, and Mimics software was adopted to reestablish the three-dimensional solid model of major organs and tissues. And then, based on the characteristic points of organs, we took the geometric center of organs as the origin of coordinate system to establish the local coordinate system[(oJ-xJ,yJ,zJ)]of organs, and calculate the transition matrix between scanning coordinate system and local coordinate system. Subsequently, according to human coordinate system[(or-xr,yr,zr)]of radiation equivalent manikin established by anatomical position, we calculated the transition matrix between scanning coordinate system and human coordinate system, furthermore obtains the transition matrix between the local coordinate system of organs and human coordinate system. So far we have obtained some geometrical parameters of organs, including the coordinate value of geometric center point and the rotation angle between the local coordinate system of organs and human coordinate system. Finally, the digital model of radiation equivalent manikin was established in pro/E software according to the three-dimensional models of tissues and organs and their geometric parameters. In conclusion, the digital modeling method of radiation equivalent manikin has important theoretical significance and practical value for it can achieve the digital design and manufacture of radiation equivalent manikin, improving the processing accuracy, shortening the production cycle and laying solid theoretical foundation for the parametric design of radiation equivalent manikin.

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备注/Memo

备注/Memo:
 【收稿日期】2017-11-17
【基金项目】航天医学基础与应用国家重点实验室研究基金（SMFA12B03）；载人航天领域预先研究项目（040401）
【作者简介】赵志键，硕士研究生，研究方向：人机工程、机械工程，E-mail: 1179708599@qq.com；樊庆文，研究员（高教），博士，硕士生导师，研究方向：人机工程、机械电子工程，E-mail: 843398293@qq.com
【通信作者】王德麾，讲师，博士，研究方向：计算机图形学、机械电子工程，E-mail: wangdehui.scu@gmail.com
更新日期/Last Update: 2018-03-21