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公开(公告)号：EP2443491B1
公开(公告)日：2020-03-04
申请号：EP10727950.7
申请日：2010-06-09
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2.发明授权PROCESSING ELECTRONICS AND METHOD FOR DETERMINING A COUNT RESULT, AND DETECTOR FOR AN X-RAY IMAGING DEVICE 有权处理电子设备和方法确定普查结果和检波器用于X射线图像装置
公开(公告)号：EP2198324B1
公开(公告)日：2016-01-06
申请号：EP08876903.9
申请日：2008-09-23
发明人： BAEUMER, Cristian , ZEITLER, Gunter , ENGEL, Klaus, J. , HERRMANN, Christoph , STEADMAN BOOKER, Roger
CPC分类号： G01T1/17
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公开(公告)号：EP2509501B1
公开(公告)日：2018-02-21
申请号：EP10798398.3
申请日：2010-12-03
CPC分类号： A61B6/00 , A61B6/4291 , A61B6/4441 , A61B6/484
摘要： X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-ray-imaging system with large-FOV with an insertable low-cost PCI system with small-FOV, The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
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4.发明授权CORRECTION METHOD FOR DIFFERENTIAL PHASE CONTRAST IMAGING 有权KORREKTURVERFAHRENFÜRDIFFERENZIELLE PHASENKONTRASTBILDGEBUNG
公开(公告)号：EP2442722B1
公开(公告)日：2017-03-29
申请号：EP10728349.1
申请日：2010-06-10
CPC分类号： A61B6/00 , A61B6/4092 , A61B6/4291 , A61B6/484 , G01N23/04 , G21K1/06 , G21K2207/005
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公开(公告)号：EP2291680B1
公开(公告)日：2015-05-06
申请号：EP09786416.9
申请日：2009-06-09
IPC分类号： G01T1/29
CPC分类号： G01T1/2928
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公开(公告)号：EP2443491A1
公开(公告)日：2012-04-25
申请号：EP10727950.7
申请日：2010-06-09
摘要： The present invention relates to phase-contrast imaging which visualizes the phase information of coherent radiation passing a scanned object. Focused gratings are used which reduce the creation of trapezoid profile in a projection with a particular angle to the optical axis. A laser supported method is used in combination with a dedicating etching process for creating such focused grating structures.
摘要翻译： 本发明涉及相位对比成像，其可视化通过扫描对象的相干辐射的相位信息。 使用聚焦光栅，这减少了在与光轴成特定角度的投影中产生梯形轮廓。 将激光支持的方法与专门的蚀刻工艺结合使用以产生这样的聚焦光栅结构。
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公开(公告)号：EP2291680A2
公开(公告)日：2011-03-09
申请号：EP09786416.9
申请日：2009-06-09
IPC分类号： G01T1/29
CPC分类号： G01T1/2928
摘要： The invention relates to a radiation detector (10), comprising an array of pixels (1), wherein each pixel (1) comprises a conversion layer of a semiconductor material (4) for converting incident radiation into electrical signals and wherein each pixel (1) is surrounded by a trench (3) that is at least partly filled with a barrier material that absorbs at least a part of photons generated by the incident radiation. The invention also relates to a method of manufacturing such a radiation detector (10).
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公开(公告)号：EP2509501A1
公开(公告)日：2012-10-17
申请号：EP10798398.3
申请日：2010-12-03
CPC分类号： A61B6/00 , A61B6/4291 , A61B6/4441 , A61B6/484
摘要： X-ray devices for Phase Contrast Imaging (PCI) are often built up with the help of gratings. For large field-of-views (FOV), production cost and complexity of these gratings could increase significantly as they need to have a focused geometry. Instead of a pure PCI with a large FOV, this invention suggests to combine a traditional absorption X-ray-imaging system with large-FOV with an insertable low-cost PCI system with small-FOV, The invention supports the user to direct the PCI system with reduced FOV to a region that he regards as most interesting for performing a PCI scan thus eliminating X-ray dose exposure for scanning regions not interesting for a radiologist. The PCI scan may be generated on the basis of local tomography.
摘要翻译： 用于相位对比成像（PCI）的X射线设备通常在光栅的帮助下构建。 对于大视野（FOV），这些光栅的生产成本和复杂性可能会因为需要聚焦几何而显着增加。 本发明不是采用具有较大FOV的纯PCI，而是将传统的吸收式X射线成像系统与大型FOV组合在一起，并具有可插入的具有小FOV的低成本PCI系统。本发明支持用户指导PCI 系统将FOV降低到他认为对于进行PCI扫描最有趣的区域，从而消除了对放射科医生不感兴趣的扫描区域的X射线剂量曝光。 PCI扫描可以在局部层析成像的基础上产生。
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公开(公告)号：EP2442722A1
公开(公告)日：2012-04-25
申请号：EP10728349.1
申请日：2010-06-10
CPC分类号： A61B6/00 , A61B6/4092 , A61B6/4291 , A61B6/484 , G01N23/04 , G21K1/06 , G21K2207/005
摘要： The present invention generally refers to a correction method for grating- based X-ray differential phase contrast imaging (DPCI) as well as to an apparatus which can advantageously be applied in X-ray radiography and tomography for hard X-ray DPCI of a sample object or an anatomical region of interest to be scanned. More precisely, the proposed invention provides a suitable approach that helps to enhance the image quality of an acquired X-ray image which is affected by phase wrapping, e.g. in the resulting Moiré interference pattern of an emitted X-ray beam in the detector plane of a Talbot-Lau type interferometer after diffracting said X-ray beam at a phase-shifting beam splitter grating. This problem, which is further aggravated by noise in the obtained DPCI images, occurs if the phase between two adjacent pixels in the detected X-ray image varies by more than
π radians and is effected by a line integration over the object's local phase gradient,which induces a phase offset error of
π radians that leads to prominent line artifacts parallel to the direction of said line integration.-
公开(公告)号：EP2356486A2
公开(公告)日：2011-08-17
申请号：EP09756185.6
申请日：2009-11-09
发明人： STEADMAN BOOKER, Roger , SIMON, Matthias , HERRMANN, Christoph , MENSER, Bernd , WIEGERT, Jens , ENGEL, Klaus, J. , BAEUMER, Christian , MUELHENS, Oliver
CPC分类号： G01T1/249 , G01T1/24 , G01T1/2928
摘要： The invention relates to converter element (100) for a radiation detector, particularly for a Spectral CT scanner. The converter element (100) comprises at least two conversion cells (131) that are at least partially separated from each other by intermediate separation walls (135) which affect the spreading of electrical signals generated by incident radiation (X). The conversion cells (131) may particularly consist of a crystal of CdTe and/or CdZnTe. Said crystal is preferably grown by e.g. vapor deposition between preformed separation walls.
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