Digital modeling method for establishing a radiation equivalent manikin(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2018年第3期
- Page:
- 275-280
- Research Field:
- 医学影像物理
- Publishing date:
Info
- Title:
- Digital modeling method for establishing a radiation equivalent manikin
- Author(s):
- ZHAO Zhijian; FAN Qingwen; WANG Dehui; LI Haibo; PEI Hongliang
- School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China
- Keywords:
- ; radiation equivalent manikin; digitized modeling; coordinate transformation; three-dimensional model; pro/E
- PACS:
- R32；TB1
- DOI:
- DOI:10.3969/j.issn.1005-202X.2018.03.006
- 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.
Last Update: 2018-03-21