Automatic calibration method of voxel size for cone-beam 3D-CT scanning system
文献类型：期刊论文
| 作者 | Yang Min1; Wang Xiao-Long1; Liu Yi-Peng2; Meng Fan-Yong3; Li Xing-Dong4; Liu Wen-Li4; Wei Dong-Bo1 |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2014-04-01 |
| 卷号 | 38期号:4 |
| 关键词 | cone-beam CT voxel size least square fitting automatic calibration |
| ISSN号 | 1674-1137 |
| 其他题名 | Chin. Phys. C |
| 中文摘要 | For a cone-beam three-dimensional computed tomography (3D-CT) scanning system, voxel size is an important indicator to guarantee the accuracy of data analysis and feature measurement based on 3D-CT images. Meanwhile, the voxel size changes with the movement of the rotary stage along X-ray direction. In order to realize the automatic calibration of the voxel size, a new and easily-implemented method is proposed. According to this method, several projections of a spherical phantom are captured at different imaging positions and the corresponding voxel size values are calculated by non-linear least-square fitting. Through these interpolation values, a linear equation is obtained that reflects the relationship between the voxel size and the rotary stage translation distance from its nominal zero position. Finally, the linear equation is imported into the calibration module of the 3D-CT scanning system. When the rotary stage is moving along X-ray direction, the accurate value of the voxel size is dynamically exported. The experimental results prove that this method meets the requirements of the actual CT scanning system, and has virtues of easy implementation and high accuracy. |
| 英文摘要 | For a cone-beam three-dimensional computed tomography (3D-CT) scanning system, voxel size is an important indicator to guarantee the accuracy of data analysis and feature measurement based on 3D-CT images. Meanwhile, the voxel size changes with the movement of the rotary stage along X-ray direction. In order to realize the automatic calibration of the voxel size, a new and easily-implemented method is proposed. According to this method, several projections of a spherical phantom are captured at different imaging positions and the corresponding voxel size values are calculated by non-linear least-square fitting. Through these interpolation values, a linear equation is obtained that reflects the relationship between the voxel size and the rotary stage translation distance from its nominal zero position. Finally, the linear equation is imported into the calibration module of the 3D-CT scanning system. When the rotary stage is moving along X-ray direction, the accurate value of the voxel size is dynamically exported. The experimental results prove that this method meets the requirements of the actual CT scanning system, and has virtues of easy implementation and high accuracy. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | CT ; PROJECTION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000333547500014 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8033]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Beijing Univ Aeronaut & Astronaut, Sch Mech Engn & Automat, Beijing 100191, Peoples R China 2.Harbin Inst Technol, Dept Control Sci & Engn, Harbin 150001, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Natl Inst Metrol, Beijing 100013, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Min,Wang Xiao-Long,Liu Yi-Peng,et al. Automatic calibration method of voxel size for cone-beam 3D-CT scanning system[J]. CHINESE PHYSICS C,2014,38(4). |
| APA | Yang Min.,Wang Xiao-Long.,Liu Yi-Peng.,Meng Fan-Yong.,Li Xing-Dong.,...&Wei Dong-Bo.(2014).Automatic calibration method of voxel size for cone-beam 3D-CT scanning system.CHINESE PHYSICS C,38(4). |
| MLA | Yang Min,et al."Automatic calibration method of voxel size for cone-beam 3D-CT scanning system".CHINESE PHYSICS C 38.4(2014). |
入库方式： OAI收割
来源：过程工程研究所
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