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1.发明申请公开(公告)号：US20140185757A1
公开(公告)日：2014-07-03
申请号：US13731447
申请日：2012-12-31
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Jonathan Immanuel Sperl , Dirk Beque
CPC classification number: A61B6/484 , G06T5/001 , G06T5/10 , G06T7/0012 , G06T11/003 , G06T2207/10116
Abstract: An image reconstruction method for differential phase contrast imaging includes receiving data corresponding to a signal produced by an X-ray detector and corresponding to X-rays that passed through a subject and a grating system to reach the X-ray detector. The method also includes performing a fringe analysis on the received data. The fringe analysis includes a non-integer fringe fraction correction utilizing one or more adapted basis functions in the Fourier domain to determine one or more Fourier coefficients. A differential phase image of the subject is generated by utilizing the one or more Fourier coefficients.
Abstract translation: 用于差分相位对比成像的图像重建方法包括：接收对应于由X射线检测器产生的信号的数据，并对应于穿过被摄体的X射线和光栅系统到达X射线检测器。 该方法还包括对所接收的数据执行边缘分析。 边缘分析包括利用傅立叶域中的一个或多个适应的基函数来确定一个或多个傅立叶系数的非整数边缘分数校正。 通过利用一个或多个傅立叶系数来产生对象的差分相位图像。
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2.发明授权公开(公告)号：US09805481B2
公开(公告)日：2017-10-31
申请号：US15004293
申请日：2016-01-22
Applicant: General Electric Company
Inventor： Jonathan Immanuel Sperl , Dirk Beque
CPC classification number: G06T11/003 , A61B6/00 , A61B6/484 , G01N23/046 , G01N2223/401 , G06T2211/40
Abstract: Reconstructing under-sampled PCT data includes obtaining under-sampled scan data of a subject-under-test, the object scan performed on a phase contrast computed tomography (PCT) system, performing a regularized Fourier analysis on the under-sampled scan data, correcting for one or more PCT system contributions to the under-sampled scan data by dividing the computed Fourier coefficients by Fourier coefficients representative of the one or more PCT system contributions, obtaining at least one of an absorption sinogram, a differential phase sinogram, and a dark field sinogram from the corrected Fourier coefficients, and performing tomographic reconstruction on the obtained absorption sinogram, the obtained differential phase sinogram, and the obtained dark field sinogram. A system and non-transitory computer readable medium are also disclosed.
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3.发明授权公开(公告)号：US09014333B2
公开(公告)日：2015-04-21
申请号：US13731447
申请日：2012-12-31
Applicant: General Electric Company
Inventor： Jonathan Immanuel Sperl , Dirk Beque
CPC classification number: A61B6/484 , G06T5/001 , G06T5/10 , G06T7/0012 , G06T11/003 , G06T2207/10116
Abstract: An image reconstruction method for differential phase contrast imaging includes receiving data corresponding to a signal produced by an X-ray detector and corresponding to X-rays that passed through a subject and a grating system to reach the X-ray detector. The method also includes performing a fringe analysis on the received data. The fringe analysis includes a non-integer fringe fraction correction utilizing one or more adapted basis functions in the Fourier domain to determine one or more Fourier coefficients. A differential phase image of the subject is generated by utilizing the one or more Fourier coefficients.
Abstract translation: 用于差分相位对比成像的图像重建方法包括：接收对应于由X射线检测器产生的信号的数据，并对应于穿过被摄体的X射线和光栅系统到达X射线检测器。 该方法还包括对所接收的数据执行边缘分析。 边缘分析包括利用傅立叶域中的一个或多个适应的基函数来确定一个或多个傅立叶系数的非整数边缘分数校正。 通过利用一个或多个傅立叶系数来产生对象的差分相位图像。
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