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    • 2. 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)。
    • 3. 发明申请
    • COMPUTED TOMOGRAPHY SCANNER APPARATUS AND METHOD FOR CT-BASED IMAGE ACQUISITION BASED ON SPATIALLY DISTRIBUTED X-RAY MICROSOURCES OF THE CONE-BEAM TYPE
    • 计算机图像扫描仪装置和基于CT的图像采集方法基于空间分布的锥形X射线微观结构
    • WO2009115982A1
    • 2009-09-24
    • PCT/IB2009/051083
    • 2009-03-17
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHVOGTMEIER, GereonBREDNO, JoergPIETIG, RainerGRASS, MichaelOVERDICK, Michael
    • VOGTMEIER, GereonBREDNO, JoergPIETIG, RainerGRASS, MichaelOVERDICK, Michael
    • G01N23/04A61B6/03
    • A61B6/032A61B6/027A61B6/4085A61B6/503A61B6/508A61B6/587H01J35/065H01J2235/068
    • The present invention refers to distributed X-ray source computed tomography (CT) based imaging systems and, more particularly, to a CT scanner apparatus and method for a CT-based image acquisition and 3D reconstruction using stationary, partly stationary or non-stationary source-detector setup geometries with at least one detector ring fixedly attached to a gantry (101) and a number of contiguous or partly contiguous radiator arrays (RA 1 , RA 2 , …, RA N ),each comprising a number of spatially distributed X-ray microsources (R, MS) of the cone-beam type, which may preferably be fabricated in carbon nanotube (CNT) technology, thus allowing higher sampling rates for an improved temporal resolution of acquired CT images as needed for an exact reconstruction of fast moving objects (such as e.g. the myocard) from a set of acquired projection data. Different arrangements of CNT-type radiator or source arrays (RA 1 , RA 2 , …, RA N ) and detector arrays (DA 1 , DA 2 , …, DA N ) as described with reference to exemplary embodiments of the present invention are proposed which, within improved sampling constraints as mentioned above, serve to enhance the spatial resolution of the reconstructed images by reducing artifacts that may result from missing or partial available image acquisition data.
    • 本发明涉及基于分布式X射线源计算机断层摄影(CT)的成像系统,更具体地,涉及一种用于基于CT的图像采集和使用静止,部分静止或非静止源的3D重建的CT扫描仪装置和方法 - 检测器设置几何形状,其中至少一个检测器环固定地连接到台架(101)和多个连续或部分相邻的辐射器阵列(RA1,RA2,RAN),每个辐射器阵列包括多个空间分布的X射线微源 锥形束类型,其可以优选地以碳纳米管(CNT)技术制造,因此允许更高的采样率,用于对快速移动物体的精确重建所需的所获得的CT图像的改善的时间分辨率(例如 例如心肌)从一组获得的投影数据。 提出了如参考本发明的示例性实施例所描述的CNT型散热器或源阵列(RA1,RA2,RAN)和检测器阵列(DA1,DA2,DAN)的不同布置,其在改进的采样约束 如上所述,用于通过减少可能由缺失或部分可用图像采集数据导致的伪像来增强重建图像的空间分辨率。
    • 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。
    • 8. 发明申请
    • X-RAY EXAMINATION APPARATUS AND METHOD
    • X射线检查装置和方法
    • WO2010070554A1
    • 2010-06-24
    • PCT/IB2009/055661
    • 2009-12-10
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHBAEUMER, ChristianVOGTMEIER, Gereon
    • BAEUMER, ChristianVOGTMEIER, Gereon
    • A61B6/03
    • A61B6/405A61B6/032A61B6/4007A61B6/4028A61B6/4035A61B6/4241A61B6/482
    • The present invention relates to an examination apparatus and a corresponding method to realize a Spectral x-ray imaging device through inverse-geometry CT. The proposed examination apparatus comprises: an X-ray source unit (14) comprising a plurality of X-ray sources (15) for emitting X-rays (24) at a plurality of locations, an X-ray detection unit (18) for detecting X-rays emitted from one or more of said X-ray sources (15) after penetration of an examination area (19) between said X-ray source unit (14) said X-ray detection unit (18) and for generating detection signals, a processing unit (36) for processing the generated detection signals, and - a control unit (26) for controlling said X-ray sources (15) to subsequently, alone or in groups emit X-rays at at least two different energy spectra such that in the time interval, during which a particular X-ray source (15a) or said group of X-ray sources (15a,15d, 15g), is switched over to emit X-rays at a different energy spectrum, said particular X-ray source (15a) or said group of X-ray sources (15a, 15d, 15g) is switched off and one or more other X-ray sources (15b, 15c) or groups of X-ray sources (15b, 15e, 15h; 15c, 15f, 15i) are subsequently switched on to emit X-rays.
    • 本发明涉及通过逆几何CT实现光谱X射线成像装置的检查装置和相应的方法。 所提出的检查装置包括:X射线源单元(14),包括用于在多个位置发射X射线(24)的多个X射线源(15); X射线检测单元(18),用于 检测在所述X射线源单元(14)所述X射线检测单元(18)上的检查区域(19)穿透之后从一个或多个所述X射线源(15)发射的X射线,并且用于产生检测 信号,用于处理所生成的检测信号的处理单元(36),以及用于随后单独地或以组中的方式控制所述X射线源(15)的控制单元(26)以至少两种不同的能量发射X射线 光谱,使得在特定X射线源(15a)或所述X射线源组(15a,15d,15g)的切换期间以不同能谱发射X射线的时间间隔中,所述 特定X射线源(15a)或所述X射线源组(15a,15d,15g)被切断,并且一个或多个其它X射线源(15b,15c)或X-ra组 (15b,15e,15h; 15c,15f,15i)随后被接通以发射X射线。