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1. 发明申请

US20120307966A1 APPARATUS FOR PHASE-CONTRAST IMAGING COMPRISING A DISPLACEABLE X-RAY DETECTOR ELEMENT AND METHOD 有权
标题翻译：包含可移位X射线探测器元件和方法的相位对比成像装置
公开(公告)号：US20120307966A1
公开(公告)日：2012-12-06
申请号：US13514383
申请日：2010-12-03
申请人： Ewald Roessl , Klaus Juergen Engel , Gereon Vogtmeier , Dieter Geller , Gerhard Martens , Sabastian Siegmund Schusser , Thomas Koehler
发明人： Ewald Roessl , Klaus Juergen Engel , Gereon Vogtmeier , Dieter Geller , Gerhard Martens , Sabastian Siegmund Schusser , Thomas Koehler
IPC分类号： G01N23/04
CPC分类号： A61B6/00 , A61B6/032 , A61B6/4021 , A61B6/4092 , A61B6/4291 , A61B6/484
摘要： The present invention relates to X-ray image acquisition technology in general. Employing phase-contrast imaging for X-ray image acquisition may significantly enhance the quality and information content of images acquired. However, phase-contrast information may only be obtainable in a small detector region, possibly being too small for a sufficient field of rotation view for specialized X-ray imaging applications. Accordingly, an apparatus for phase-contrast imaging is provided that may allow the acquisition of an enlarged field of view. According to the present invention an apparatus (1) for phase-contrast imaging is provided, comprising an X-ray source (2), an X-ray detector (12) element having a detector size, a beam splitter grating (8) and an analyzer grating (10). An object (6) is arrangeable between the X-ray source (2) and the X-ray detector (12). The beam splitter grating (8) and the analyzer grating (10) are arrangeable between the X-ray source (2) and the X-ray detector (12). X-ray source (2), the beam splitter grating (8), the analyzer grating (10) and the X-ray detector (12) are operatively coupled such that a phase-contrast image of the object (6) is obtainable. The apparatus (1) is adapted for acquiring a phase-contrast image having a field of view larger than the detector size. The X-ray detector element (12) is displaceable and by the displacement of the X-ray detector (12) a phase-contrast image of the field of view is obtainable.
摘要翻译：本发明一般涉及X射线图像获取技术。采用X射线图像获取的相位对比成像可显着提高获取图像的质量和信息内容。然而，相位对比度信息只能在小的检测器区域中获得，对于专门的X射线成像应用，可能对于足够的旋转视场来说太小。因此，提供了一种用于相位对比成像的装置，其可以允许获取放大的视场。根据本发明，提供了一种用于相位对比成像的装置（1），包括具有检测器尺寸的X射线源（2），X射线检测器（12）元件，分束器光栅（8）和分析器光栅（10）。物体（6）可布置在X射线源（2）和X射线检测器（12）之间。分束器光栅（8）和分析器光栅（10）可布置在X射线源（2）和X射线检测器（12）之间。 X射线源（2），分束器光栅（8），分析器光栅（10）和X射线检测器（12）可操作地耦合，使得可以获得物体（6）的相位对比度图像。装置（1）适于获取具有大于检测器尺寸的视场的相位对比度图像。 X射线检测器元件（12）可移动，并且通过X射线检测器（12）的移位，可以获得视场的相位对比图像。

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