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公开(公告)号:US09801600B2
公开(公告)日:2017-10-31
申请号:US14943157
申请日:2015-11-17
申请人: Ge Wang , Yan Xi , Wenxiang Cong
发明人: Ge Wang , Yan Xi , Wenxiang Cong
CPC分类号: A61B6/484 , A61B6/032 , A61B6/4035 , A61B6/4233 , A61B6/4291 , A61B6/5205 , G06T11/005 , G21K1/025 , G21K2207/005
摘要: Systems and methods for X-ray phase-contrast imaging (PCI) are provided. A quasi-periodic phase grating can be positioned between an object being imaged and a detector. An analyzer grating can be disposed between the phase grating and the detector. Second-order approximation models for X-ray phase retrieval using paraxial Fresnel-Kirchhoff diffraction theory are also provided. An iterative method can be used to reconstruct a phase-contrast image or a dark-field image.
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公开(公告)号:US20160135769A1
公开(公告)日:2016-05-19
申请号:US14943157
申请日:2015-11-17
申请人: Ge Wang , Yan Xi , Wenxiang Cong
发明人: Ge Wang , Yan Xi , Wenxiang Cong
CPC分类号: A61B6/484 , A61B6/032 , A61B6/4035 , A61B6/4233 , A61B6/4291 , A61B6/5205 , G06T11/005 , G21K1/025 , G21K2207/005
摘要: Systems and methods for X-ray phase-contrast imaging (PCI) are provided. A quasi-periodic phase grating can be positioned between an object being imaged and a detector. An analyzer grating can be disposed between the phase grating and the detector. Second-order approximation models for X-ray phase retrieval using paraxial Fresnel-Kirchhoff diffraction theory are also provided. An iterative method can be used to reconstruct a phase-contrast image or a dark-field image.
摘要翻译: 提供了X射线相位对比成像(PCI)的系统和方法。 准周期相位光栅可以位于被成像对象和检测器之间。 分析器光栅可以设置在相位光栅和检测器之间。 还提供了使用近轴菲涅尔 - 基尔霍夫衍射理论的X射线相位检索的二阶近似模型。 可以使用迭代方法来重建相位对比度图像或暗视场图像。
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