公开(公告)号：WO2021028072A1

公开(公告)日：2021-02-18

申请号：PCT/EP2020/025359

申请日：2020-08-05

Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH

Inventor： NEUSER, Eberhard ,  SAWATZKY, Alex ,  ROTHE, Nils ,  SUPPES, Alexander

IPC: G01N23/046

Abstract: Systems and methods for non-destructive testing by computed tomography are provided. The system can include a stationary radiation source, a stage, and a plurality of stationary radiation detectors. The source can be configured to emit, from a focal point, a beam of penetrating radiation having a three-dimensional geometry and to direct the beam in a path incident upon a target. The stationary radiation source can be positioned with respect to the plurality of stationary radiation detectors and the stage such that, a first plurality of beam segment paths is defined between the focal point and respective sensing faces of the plurality of radiation detectors and at least one second beam segment path is defined between the focal point and a predetermined gap.

公开(公告)号：WO2014083209A1

公开(公告)日：2014-06-05

申请号：PCT/EP2013/075293

申请日：2013-12-02

Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH

Inventor： NEUSER, Eberhard ,  SUPPES, Alexander ,  ROTHE, Nils ,  POKUTNEV, Pavel

IPC: A61B6/00 ,  G01N23/04

CPC classification number: G01T7/005 ,  A61B6/03 ,  A61B6/4233 ,  A61B6/5258 ,  A61B6/583 ,  A61B6/585 ,  F04C2270/041 ,  G01N23/046 ,  G01N2223/303 ,  G01N2223/3035 ,  G01N2223/419

Abstract: A method for detecting geometrical imaging properties of a flat panel detector (12) in an X-ray testing system comprises the steps of: disposing a calibrating body (13) between an X-ray beam source (11) and the flat panel detector (12), the calibrating body (13) comprising at least one discrete geometrical object (30); recording at least one X-ray image of the calibrating body (13) with the flat panel detector (12), with at least one discrete geometrical figure (32) being generated in the X-ray image by imaging the at least one discrete geometrical object (30) of the calibrating body (13); and determining the positionally dependent distortion error of the flat panel detector (12) from the at least one X-ray image based on at least one feature of the at least one discrete geometrical figure (32). All features of the at least one discrete geometrical figure (32) used for determining the positionally dependent distortion error are independent from the dimensions of the calibrating body (13).

Abstract translation: 一种用于检测X射线测试系统中的平板检测器（12）的几何成像特性的方法，包括以下步骤：将校准体（13）设置在X射线束源（11）和平板检测器 12），所述校准体（13）包括至少一个分立的几何物体（30）; 使用所述平板检测器（12）记录所述校准体（13）的至少一个X射线图像，其中在所述X射线图像中生成至少一个离散几何图形（32），所述至少一个离散几何图形通过对所述至少一个离散几何图 物体（30）; 以及基于所述至少一个离散几何图形（32）的至少一个特征，从所述至少一个X射线图像确定所述平板检测器（12）的位置相关失真误差。 用于确定位置相关失真误差的至少一个离散几何图形（32）的所有特征与校准体（13）的尺寸无关。

公开(公告)号：WO2012003850A1

公开(公告)日：2012-01-12

申请号：PCT/EP2010/004191

申请日：2010-07-09

Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH ,  NEUSER, Eberhard ,  SUPPES, Alexander ,  ROTHE, Nils ,  HÖTTER, Michael ,  FROST, Anja

Inventor： NEUSER, Eberhard ,  SUPPES, Alexander ,  ROTHE, Nils ,  HÖTTER, Michael ,  FROST, Anja

IPC: G06F19/00

CPC classification number: G06F19/321 ,  G06F19/00 ,  G06T7/0012

Abstract: A computed tomography method for determining a volumetric representation of a sample (13) comprises an initial reconstruction step (22) for reconstructing initial volume data (23) of the sample (13) from x-ray projections (21) of the sample (13) taken by an x-ray system (10), a step (24) of determining a part of the reconstructed initial sample volume to be updated, and an iterative update process (32) for generating, using an iterative reconstruction method, updated volume data (23) only for the part of the volume data (23) determined to be updated. The method comprises, in said step (24) of determining the part of the sample volume to be updated, individually evaluating for every single voxel in said volume data (23), based on available quality information for the reconstructed volume data (23), whether or not this voxel fulfils a predetermined condition indicating that an update is required for this voxel, and, in said iterative update process (32), generating said updated volume data (23) only for those voxels for which it has been determined that an update is required.

Abstract translation: 用于确定样本（13）的体积表示的计算机断层摄影方法包括用于从样本（13）的X射线投影（21）重建样本（13）的初始体积数据（23）的初始重建步骤（22） ），用于确定要更新的重建的初始样本体积的一部分的步骤（24）;以及迭代更新过程（32），用于使用迭代重建方法生成更新的体积 数据（23）仅用于确定要更新的卷数据（23）的一部分。 该方法包括：在所述步骤（24）中，基于用于重建的体数据（23）的可用质量信息来确定要更新的样本体积的一部分，单独地评估所述体数据（23）中的每个单个体素， 该体素是否满足指示对于该体素需要更新的预定条件，并且在所述迭代更新处理（32）中，仅针对已经确定其的体素生成所述更新体数据（23） 需要更新。

公开(公告)号：WO2016141956A1

公开(公告)日：2016-09-15

申请号：PCT/EP2015/054737

申请日：2015-03-06

Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH

Inventor： SUPPES, Alexander ,  ROTHE, Nils

IPC: G01N23/04 ,  H04N5/32 ,  G21K1/02

CPC classification number: G01N23/046 ,  A61B6/032 ,  A61B6/5282 ,  G01N2223/051 ,  G01N2223/316 ,  G01N2223/401 ,  G21K1/02

Abstract: Scatter correction for tomography: for each position, two images are aquired, a first image without and a second image with a scatter reducing aperture plate (50). A scatter image is calculated by subtracting the second image from the first image. The apertures (48) in the scatter reducing plate (50) are arranged hexagonally in order to optimise the packaging density of the apertures.

Abstract translation: 断层扫描的散射校正：对于每个位置，两个图像都被捕获，没有第一个图像，第二个图像具有散射减小光圈板（50）。 通过从第一图像中减去第二图像来计算散射图像。 散射减压板（50）中的孔（48）以六边形排列，以便优化孔的包装密度。

公开(公告)号：WO2012163367A1

公开(公告)日：2012-12-06

申请号：PCT/EP2011/002628

申请日：2011-05-27

Applicant: GE SENSING & INSPECTION TECHNOLOGIES GMBH ,  NEUSER, Eberhard ,  SUPPES, Alexander ,  ROTHE, Nils ,  HÖTTER, Michael ,  FROST, Anja

Inventor： NEUSER, Eberhard ,  SUPPES, Alexander ,  ROTHE, Nils ,  HÖTTER, Michael ,  FROST, Anja

IPC: G06T11/00

CPC classification number: A61B6/032 ,  G06T11/008

Abstract: A computed tomography method for determining a volumetric representation of a sample (13), comprising a first reconstruction (22a) for reconstructing first reconstructed volume data (23a) of the sample (13) from first x-ray projection data (21a) of the sample (13) taken by an x-ray system (10), a second reconstruction (22b) for reconstructing second reconstructed volume data (23b) of the sample (13) from second x- ray projection data (21b) of the sample (13) taken by an x-ray system (10), characterized by calculating first individual confidence measures (28a) for single voxels of said first reconstructed volume data (23a), calculating second individual confidence measures (28b) for single voxels of said second reconstructed volume data (23b), and calculating, in a subsequent step (35), at least one resulting set of individual values (36, 37, 38) for each voxel based on said first individual confidence measures (28a) and said second individual confidence measures (28b).

Abstract translation: 一种用于确定样本（13）的体积表示的计算机断层摄影方法，包括用于从所述样本（13）的第一x射线投影数据（21a）重建所述样本（13）的第一重建体数据（23a）的第一重建（22a） 由X射线系统（10）拍摄的采样（13），用于从样本的第二x射线投影数据（21b）重建样本（13）的第二重建体数据（23b）的第二重建（22b） 13），其特征在于计算所述第一重建体数据（23a）的单个体素的第一个体置信度（28a），计算所述第二重建体数据（23a）的单个体素的第二个体置信度（28b） 重建体数据（23b），并且在随后的步骤（35）中，基于所述第一个体置信度度量（28a）和所述第二个体计算每个体素的至少一组所述个体值（36,37,38） 信心措施（28b）。