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Automatic calibration method of voxel size for cone-beam 3D-CT scanning system
Alternative TitleChin. Phys. C
Yang Min1; Wang Xiao-Long1; Liu Yi-Peng2; Meng Fan-Yong3; Li Xing-Dong4; Liu Wen-Li4; Wei Dong-Bo1
2014-04-01
Source PublicationCHINESE PHYSICS C
ISSN1674-1137
Volume38Issue:4
AbstractFor 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.; 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.
KeywordCone-beam Ct Voxel Size Least Square Fitting Automatic Calibration
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/1674-1137/38/4/046202
URL查看原文
Indexed BySCI
Language英语
WOS KeywordCT ; PROJECTION
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000333547500014
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8033
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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).
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