公开(公告)号：US09801605B2

公开(公告)日：2017-10-31

申请号：US14362458

申请日：2012-12-13

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa ,  Ewald Roessl

IPC: A61B6/03 ,  H01L27/148 ,  H01L27/146 ,  G06F7/64 ,  G01T1/18 ,  H03K5/125 ,  H03K21/40 ,  G01R29/02 ,  G01R1/08 ,  G01R29/24 ,  A61B6/00 ,  H03K5/24 ,  G01R29/033 ,  H03K5/1252 ,  G01R29/027 ,  G01R29/08 ,  G01T1/17

CPC classification number: A61B6/585 ,  A61B6/4241 ,  A61B6/5205 ,  A61B6/5258 ,  A61B6/582 ,  A61B2560/0223 ,  A61B2560/0238 ,  G01R29/0273 ,  G01R29/033 ,  G01R29/0878 ,  G01R29/24 ,  G01T1/171 ,  G01T1/18 ,  G06F7/64 ,  H01L27/14856 ,  H03K5/1252 ,  H03K5/2463 ,  H03K21/40

Abstract: The invention relates to a detection apparatus (12) for detecting photons. The detection apparatus comprises a pile-up determining unit (15) for determining whether detection signal pulses being indicative of detected photons are caused by a pile-up event or by a non-pile-up event, wherein a detection values generating unit (16) generates detection values depending on the detection signal pulses and depending on the determination whether the respective detection signal pulse is caused by a pile-up event or by a non-pile-up event. In particular, the detection values generating unit can be adapted to reject the detection signal pulses caused by pile-up events while generating the detection values. This allows for an improved quality of the generated detection values.

公开(公告)号：US09775575B2

公开(公告)日：2017-10-03

申请号：US14405418

申请日：2013-06-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa

IPC: A61B6/00 ,  G01N23/04 ,  G06T11/00 ,  G06T1/00 ,  A61B6/03

CPC classification number: A61B6/484 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4291 ,  A61B6/486 ,  A61B6/5205 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T1/0007 ,  G06T11/006 ,  G06T2200/04 ,  G06T2210/41 ,  G06T2211/424

Abstract: A method for dark-field imaging includes acquiring dark-field image projections of an object with an imaging apparatus that includes an x-ray interferometer, applying a pressure wave having a predetermined frequency to the object for each acquired projection, wherein the predetermined frequency is different for each projection, and processing the acquired projections, thereby generating a 3D image of the object. In other words, the method corresponds to acoustically modulated X-ray dark field tomography. An imaging system (400) includes a scanner (401) configured for dark-field imaging, the scanner including: a source/detector pair (402/408) and a subject support (416), a pressure wave generator (420) configured to generate and transmit pressure waves having predetermined frequencies, and a console (424) that controls the scanner and the pressure wave generator to acquire at least two dark-field projection of an object with different pressure waves having different frequencies applied to the object.

公开(公告)号：US09760992B2

公开(公告)日：2017-09-12

申请号：US14917093

申请日：2014-09-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernhard Johannes Brendel ,  Thomas Koehler ,  Rolf Dieter Bippus ,  Roland Proksa

IPC: G06K9/40 ,  G06T7/00 ,  G06T11/00 ,  A61B6/03 ,  A61B6/00 ,  G06K9/62 ,  G06T1/20 ,  G06T11/60 ,  G06T7/246

CPC classification number: G06T7/0012 ,  A61B6/032 ,  A61B6/5264 ,  G06K9/6202 ,  G06T1/20 ,  G06T7/246 ,  G06T11/006 ,  G06T11/60 ,  G06T2207/10081 ,  G06T2211/412 ,  G06T2211/421 ,  G06T2211/424

Abstract: A method includes re-sampling current image data representing a reference motion state into a plurality of different groups, each group corresponding to a different motion state of moving tissue of interest, forward projecting each of the plurality of groups, generating a plurality of groups of forward projected data, each group of forward projected data corresponding to a group of the re-sampled current image data, determining update projection data based on a comparison between the forward projected data and the measured projection data, grouping the update projection data into a plurality of groups, each group corresponding to a different motion state of the moving tissue of interest, back projecting each of the plurality of groups, generating a plurality of groups of update image data, re-sampling each group of update image data to the reference motion state of the current image, and generating new current image data based on the current image data and the re-sampled update image data.

公开(公告)号：US20150268362A1

公开(公告)日：2015-09-24

申请号：US14363451

申请日：2012-12-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa

IPC: G01T1/24 ,  G01T1/17

CPC classification number: G01T1/17 ,  G01T1/24 ,  G01T1/247 ,  G01T1/249

Abstract: An imaging system (100) includes a direct conversion detector pixel (111) that detects radiation traversing an examination region and generates an electrical signal indicative thereof, wherein the signal includes a persistent current, which is produced by a direct conversion material of the pixel and which shifts a level of the signal. A persistent current estimator (116) estimates the persistent current and generates a compensation signal based on the estimate. A pre-amplifier (112) receives the signal and the compensation signal, wherein the compensation signal substantially cancels the persistent current, producing a persistent current compensated signal, and that amplifies the compensated signal, generating an amplified compensated signal. A shaper (114) generates a pulse indicative of energy of the radiation illuminating the direct conversion material based on the amplified compensated signal.

Abstract translation: 成像系统（100）包括直接转换检测器像素（111），其检测穿过检查区域的辐射，并产生指示其的电信号，其中该信号包括由像素的直接转换材料产生的持续电流，以及 这会转移信号的电平。 持续电流估计器（116）估计持续电流并且基于估计产生补偿信号。 前置放大器（112）接收信号和补偿信号，其中补偿信号基本上抵消持续电流，产生持续电流补偿信号，并放大补偿信号，产生放大的补偿信号。 整形器（114）基于放大的补偿信号产生指示照射直接转换材料的辐射的能量的脉冲。

公开(公告)号：US20150265238A1

公开(公告)日：2015-09-24

申请号：US14434209

申请日：2013-10-03

Applicant: KONINKLIJKE PHILIPS N.V. ,  PHILIPS GMBH

Inventor： Roland Proksa

IPC: A61B6/00

CPC classification number: A61B6/54 ,  A61B6/4028 ,  A61B6/4035 ,  A61B6/42 ,  A61B6/4476 ,  G01T1/24 ,  G21K1/043 ,  H01J35/10 ,  H01J2235/086

Abstract: The present invention relates to a radiographic imaging apparatus and a corresponding radiographic imaging method. The proposed apparatus comprises an X-ray source (20, 108) and a photon counting X-ray detector (40, 110). The X-ray source (20, 108) comprises a rotary X-ray anode (23) having a number of radial slits and a target layer provided on a surface of said rotary X-ray anode in between said radial slits for emitting X-ray radiation when hit by said electron beam. The said photon counting X-ray detector (40, 110) comprises a persistent current sensing and correction unit (70) for sensing a persistent output current in a blanking interval during which no X-ray radiation is emitted by said X-ray source and for using the sensed persistent output current to correct a detector signal in a subsequent measurement interval during which X-ray radiation is emitted by said X-ray source.

Abstract translation: 本发明涉及射线照相成像装置和相应的放射线照相成像方法。 所提出的装置包括X射线源（20,108）和光子计数X射线检测器（40,110）。 X射线源（20,108）包括具有多个径向狭缝的旋转X射线阳极（23）和设置在所述旋转X射线阳极的表面之间的目标层之间， 射线辐射。 所述光子计数X射线检测器（40,110）包括持续电流检测和校正单元（70），用于感测在所述X射线源不发射X射线辐射的消隐间隔中的持续输出电流，以及 用于在所述X射线源发射X射线辐射的随后的测量间隔中使用所感测的持续输出电流来校正检测器信号。

公开(公告)号：US20150139383A1

公开(公告)日：2015-05-21

申请号：US14405418

申请日：2013-06-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa

IPC: A61B6/00 ,  A61B6/03 ,  G06T11/00

CPC classification number: A61B6/484 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/4291 ,  A61B6/486 ,  A61B6/5205 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G06T1/0007 ,  G06T11/006 ,  G06T2200/04 ,  G06T2210/41 ,  G06T2211/424

Abstract: A method for dark-field imaging includes acquiring dark-field image projections of an object with an imaging apparatus that includes an x-ray interferometer, applying a pressure wave having a predetermined frequency to the object for each acquired projection, wherein the predetermined frequency is different for each projection, and processing the acquired projections, thereby generating a 3D image of the object. In other words, the method corresponds to acoustically modulated X-ray dark field tomography. An imaging system (400) includes a scanner (401) configured for dark-field imaging, the scanner including: a source/detector pair (402/408) and a subject support (416), a pressure wave generator (420) configured to generate and transmit pressure waves having predetermined frequencies, and a console (424) that controls the scanner and the pressure wave generator to acquire at least two dark-field projection of an object with different pressure waves having different frequencies applied to the object.

Abstract translation: 一种用于暗场成像的方法包括：利用包括X射线干涉仪的成像装置获取物体的暗视场图像投影，将具有预定频率的压力波施加到每个所获取的投影物体上，其中预定频率为 对于每个投影是不同的，并且处理所获取的投影，从而生成对象的3D图像。 换句话说，该方法对应于声调制的X射线暗视野层析成像。 成像系统（400）包括被配置用于暗场成像的扫描器（401），所述扫描器包括：源/检测器对（402/408）和对象支架（416）;压力波发生器（420） 生成和传送具有预定频率的压力波;以及控制台（424），其控制扫描仪和压力波发生器以获得具有施加到对象的不同频率的不同压力波的物体的至少两个暗场投影。

公开(公告)号：US20150117598A1

公开(公告)日：2015-04-30

申请号：US14405422

申请日：2013-06-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa

IPC: A61B6/00 ,  A61B6/04

CPC classification number: A61B6/484 ,  A61B6/032 ,  A61B6/035 ,  A61B6/0457 ,  A61B6/4035 ,  A61B6/4266 ,  A61B6/4291 ,  A61B6/4417 ,  A61B6/4435 ,  A61B6/502 ,  A61B6/504 ,  A61B6/5205 ,  A61B6/54

Abstract: An imaging system (200) is configured for grating-based DPCI. The imaging system includes a rotating gantry (204) that rotates around an examination region, a radiation source (208), supported by the rotating gantry, that emits radiation that traverses the examination region, a detector array (212), supported by the rotating gantry, that detects radiation that traverses the examination region, and an interferometer, supported by the rotating gantry, which includes a source grating (214), a phase grating (218), and an absorber grating (220). At least one of the phase grating or the absorber grating continuously translates with respect to the other during an integration period and the detector generates and outputs an electrical signal indicative of the detected radiation, wherein the electrical signal includes an absorption component, a coherence component and a phase component.

Abstract translation: 成像系统（200）被配置用于基于光栅的DPCI。 成像系统包括围绕检查区域旋转的旋转机架（204），由旋转机架支撑的辐射源（208），其发射穿过检查区域的辐射;检测器阵列（212），由旋转 检测穿过检查区域的辐射的台架以及由旋转机架支撑的干涉仪，其包括源光栅（214），相位光栅（218）和吸收光栅（220）。 所述相位光栅或所述吸收光栅中的至少一个在积分周期期间相对于另一个相继连续平移，并且所述检测器产生并输出指示所述检测到的辐射的电信号，其中所述电信号包括吸收分量，相干分量和 相位分量。

公开(公告)号：US20140306116A1

公开(公告)日：2014-10-16

申请号：US14359311

申请日：2012-11-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ewald Roessl ,  Axel Thran ,  Roland Proksa

IPC: G01T1/20

CPC classification number: G01T1/20 ,  G01T1/2008

Abstract: Detection apparatus for detecting radiation The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises at least two scintillators (14, 15) having different temporal behaviors, each generating scintillation light upon reception of radiation, wherein the generated scintillation light is commonly detected by a scintillation light detection unit (16), thereby generating a common light detection signal. A detection values determining unit determines first detection values by applying a first determination process and second detection values by applying a second determination process, which is different to the first determination process, on the detection signal. The first determination process includes frequency filtering the detection signal. Since the scintillation light of the different scintilla-tors is collectively detected by the same scintillation light detection unit, detection arrangements with, for example, side-looking photodiodes for separately detecting the different scintillation light of the different scintillators are not necessarily required, thereby reducing the technical complexity of the detection apparatus.

Abstract translation: 用于检测辐射的检测装置技术领域本发明涉及一种用于检测辐射的检测装置。 检测装置包括具有不同时间行为的至少两个闪烁体（14,15），每个闪烁体在接收到辐射时产生闪烁光，其中所产生的闪烁光通常由闪烁光检测单元（16）检测，从而产生公共光 检测信号。 检测值确定单元通过对检测信号应用与第一确定处理不同的第二确定处理来应用第一确定处理和第二检测值来确定第一检测值。 第一确定处理包括对检测信号进行频率滤波。 由于不同的闪烁体的闪烁光被同一个闪烁光检测部共同检测，所以不一定需要与例如用于分别检测不同的闪烁体的不同的闪烁体的侧视光电二极管的检测装置，从而减少 检测装置的技术复杂性。

公开(公告)号：US11307312B2

公开(公告)日：2022-04-19

申请号：US16978855

申请日：2019-02-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Roland Proksa

IPC: G01T1/17 ,  G01T1/20 ,  A61B6/00 ,  G01T1/29 ,  A61B6/03

Abstract: The present invention relates to a detection device for X-rays, an imaging system and a method for detecting electro-magnetic radiation using a detection device for X-rays, wherein an estimate of an incomplete measurement is acquired prior to a discontinuity of the electromagnetic radiation, wherein the discontinuity is a change or interruption in a beam or in an intensity of the electromagnetic radiation.

公开(公告)号：US11129691B2

公开(公告)日：2021-09-28

申请号：US15535455

申请日：2015-12-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernardus Hendrikus Wilhelmus Hendriks ,  Michael Grass ,  Thomas Koehler ,  Harold Agnes Wilhelmus Schmeitz ,  Roland Proksa ,  Vishnu Vardhan Pully ,  Marco Andreas Jacobus Van As ,  Waltherus Cornelis Jozef Bierhoff ,  Franciscus Marinus Antonius Maria Van Gaal ,  Drazenko Babic

IPC: A61B90/00 ,  A61B34/20

Abstract: An active marker device (100) is introducible into a human tissue and for tracking a region of interest of a human body. The active marker device includes a light source (101) for emitting light such that the emitted light can be detected by an optical sensor. In this way, the active marker device and/or the region of interest can be tracked by a tracking system including the optical sensor. The active marker device (100) also includes a switch (102) for turning the light source on and off and for operating the light source in a pulsed mode.