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    • 3. 发明申请
    • SCANNING SYSTEM FOR DIFFERENTIAL PHASE CONTRAST IMAGING
    • 扫描系统进行差分相位成像
    • WO2011070519A1
    • 2011-06-16
    • PCT/IB2010/055662
    • 2010-12-08
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHENGEL, Klaus JürgenGELLER, DieterVOGTMEIER, GereonKOEHLER, Thomas
    • ENGEL, Klaus JürgenGELLER, DieterVOGTMEIER, GereonKOEHLER, Thomas
    • A61B6/00
    • A61B6/00A61B6/032A61B6/4291A61B6/484A61B6/488A61B6/5241
    • The invention relates to the field of X-ray differential phase contrast imaging. For scanning large objects and for an improved contrast to noise ration, an X-ray device (10) for imaging an object (18) is provided. The X-ray device (10) comprises an X-ray emitter arrangement (12) and an X-ray detector arrangement (14), wherein the X-ray emitter arrangement (14) is adapted to emit an X-ray beam (16) through the object (18) onto the X-ray detector arrangement (14). The X-ray beam (16) is at least partial spatial coherent and fan- shaped. The X-ray detector arrangement (14) comprises a phase grating (50) and an absorber grating (52). The X-ray detector arrangement (14) comprises an area detector (54) for detecting X- rays, wherein the X-ray device is adapted to generate image data from the detected X-rays and to extract phase information from the X-ray image data, the phase information relating to a phase shift of X-rays caused by the object (18). The object (18) has a region of interest (32) which is larger than a detection area of the X-ray detector (18) and the X-ray device (10) is adapted to generate image data of the region of interest (32) by moving the object (18) and the X-ray detector arrangement (14) relative to each other.
    • 本发明涉及X射线差分相位成像领域。 为了扫描大型物体并改善与噪音比较的对比度,提供了用于对物体(18)成像的X射线装置(10)。 X射线装置(10)包括X射线发射器装置(12)和X射线检测器装置(14),其中X射线发射器装置(14)适于发射X射线束(16) )通过物体(18)到X射线检测器装置(14)上。 X射线束(16)至少是部分空间相干和扇形的。 X射线检测器装置(14)包括相位光栅(50)和吸收光栅(52)。 X射线检测器装置(14)包括用于检测X射线的区域检测器(54),其中X射线装置适于从检测到的X射线产生图像数据,并从X射线 图像数据,与由对象(18)引起的X射线的相移相关的相位信息。 物体(18)具有大于X射线检测器(18)的检测区域的感兴趣区域(32),并且X射线装置(10)适于产生感兴趣区域的图像数据( 32)通过相对于彼此移动物体(18)和X射线检测器装置(14)。
    • 6. 发明申请
    • CALIBRATION OF DIFFERENTIAL PHASE-CONTRAST IMAGING SYSTEMS
    • 差分相位成像系统的校准
    • WO2011070521A1
    • 2011-06-16
    • PCT/IB2010/055664
    • 2010-12-08
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHVOGTMEIER, GereonENGEL, Klaus JürgenGELLER, DieterKOEHLER, ThomasROESSL, Ewald
    • VOGTMEIER, GereonENGEL, Klaus JürgenGELLER, DieterKOEHLER, ThomasROESSL, Ewald
    • A61B1/00
    • A61B6/4291A61B6/4092A61B6/484A61B6/583G21K2207/005
    • The present invention relates to an X-ray imaging system and a method for differential phase - contrast imaging of an object. To improve calibration of differential phase - contrast imaging systems and the alignment of the gratings an X-ray imaging system is provided that comprises an X-ray emitting arrangement providing at least partially coherent X-ray radiation and an X-ray detection arrangement comprising a phase- shift diffraction grating, a phase analyzer grating, and an X-ray image detector, all arranged along an optical axis. For stepping, the gratings and/or the X-ray emitting arrangement are provided with at least two actuators arranged opposite to each other with reference to the optical axis. For calibration, calibration projections are acquired without an object, wherein, the emitted X-ray radiation or one of the gratings is stepwise displaced with a calibration displacement value. For examination, measurement projections are acquired with an object, wherein the emitted X-ray radiation or one of the gratings is stepwise displaced with a measurement, a calibration projection is associated to each of the measurement projections by registering the latter with the calibration projections.
    • 本发明涉及一种用于对象的差分相位对比成像的X射线成像系统和方法。 为了改进差分相位对比成像系统的校准和光栅的对准,提供了一种X射线成像系统,其包括提供至少部分相干X射线辐射的X射线发射装置和包括 相移衍射光栅,相位分析仪光栅和X射线图像检测器,均沿光轴排列。 对于步进,光栅和/或X射线发射装置设置有相对于光轴彼此相对布置的至少两个致动器。 对于校准,在没有物体的情况下获取校准投影,其中,所发射的X射线辐射或其中一个光栅以校准位移值逐步位移。 为了进行检查,用物体获取测量投影,其中所发射的X射线辐射或其中一个光栅通过测量而逐步移位,通过将校准投影与校准投影相对应地将校准投影与每个测量投影相关联。