公开(公告)号：US11232881B2

公开(公告)日：2022-01-25

申请号：US16463150

申请日：2017-11-22

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Axel Thran ,  Heiner Daerr ,  Ewald Roessl ,  Gereon Vogtmeier

IPC: G01T1/16 ,  G21K1/02

Abstract: The present invention relates to an anti-scatter grid (ASG) assembly comprising a first and a second grid, wherein the second grid is arranged on top of the first grid and comprises a lateral shift. The lamella thickness of the first grid is smaller than the lamella thickness of the second grid. The present invention further relates to a detector arrangement comprising a pixel detector and an ASG assembly arranged on top of the pixel detector.

公开(公告)号：US11123034B2

公开(公告)日：2021-09-21

申请号：US16663824

申请日：2019-10-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Dirk Schaefer ,  Axel Thran ,  Thomas Koehler

IPC: A61B6/00 ,  G01T1/20 ,  G01T1/29 ,  A61B5/00

Abstract: An imaging system includes radiation source that emits radiation that traverses an examination region and a portion of a subject therein and a detector array that detects radiation that traverses the examination region and the portion of the subject therein and generates a signal indicative thereof. A volume scan parameter recommender recommends at least one spectral scan parameter value for a volume scan of the portion of the subject based on a spectral decomposition of first and second 2D projections acquired by the radiation source and detector array. The first and second 2D projections have different spectral characteristics. A console employs the recommended at least one spectral scan parameter value to perform the volume scan of the portion of the subject.

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：US11435488B2

公开(公告)日：2022-09-06

申请号：US17053890

申请日：2019-05-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Christoph Jan Herrmann ,  Klaus Erhard ,  Bernhard Johannes Brendel ,  Heiner Daerr ,  Artur Sossin ,  Axel Thran

IPC: G01T1/24 ,  A61B6/03 ,  G01T1/17

Abstract: A radiation detector (100) adapted for detecting leakage currents is disclosed and comprises a direct conversion material (101) for converting incident radiation, at least one first electrode (108) and a plurality of second electrodes (103) connected to surfaces of the direct conversion material (101) for collecting each generated charges upon application of an electric field, at least one current measurement device (201), and a plurality of signal processing chains (210, 220, 230). Each signal processing chain comprises a readout unit (215, 216, 217, 218, 219) for discriminating between energy values with respect to the incident radiation, and a switching element (214) for sending signals on a first signal path (2141) electrically connecting one of the plurality of second electrodes with the readout unit, or on a second signal path electrically connecting the one of the plurality of second electrodes with an input to one of the at least one current measurement devices. A plurality of switching elements is configured to send signals on the second signal path for measuring a leakage current received at a corresponding plurality of second electrodes of the detector in the absence of incident radiation.

公开(公告)号：US11308660B2

公开(公告)日：2022-04-19

申请号：US16633843

申请日：2018-07-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Tanja Elss ,  Michael Grass ,  Rolf Dieter Bippus ,  Axel Thran

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

Abstract: Motion compensated reconstruction is currently not well-suited for reconstructing the valve, the valve leaflets and the neighboring vascular anatomy of the heart. Blurring of the valve and the valve leaflets occurs. This may lead to wrong diagnosis. A new approach for motion compensated reconstruction of the valve and the related anatomy is presented in which an edge-enhancing step is performed to suppress blurring.

公开(公告)号：US11257262B2

公开(公告)日：2022-02-22

申请号：US16325268

申请日：2017-08-22

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Michael Grass ,  Rolf Dieter Bippus ,  Axel Thran ,  Cristian Buerger ,  Manindranath Vembar ,  Kevin Martin Brown

IPC: G06T11/00 ,  A61B6/03 ,  A61B6/00 ,  G06T7/10 ,  G06T3/00 ,  G06T7/11 ,  G06T5/30 ,  G06T5/50 ,  G06T7/20

Abstract: A medical imaging system (200) includes a masking unit (234), an image registration unit (238), a motion estimator (240) and a motion compensating reconstructor (244). The masking unit constructs a mask for each reconstructed volumetric phase image of a plurality of reconstructed volumetric phase images that masks portions of a corresponding image external to an anatomical model fitted to a segmented at least one anatomical structure, 5 wherein the plurality of reconstructed volumetric phase images include a target phase and a plurality of temporal neighboring phases reconstructed from projection data. The image registration unit registers the masked reconstructed volumetric phase images. The motion estimator estimates motion between the target phase and the plurality of temporal neighboring phases according to the model based on the registered masked reconstructed 10 volumetric phase images. The motion compensating reconstructor reconstructs a motion compensated medical image from the projection data using the estimated motion of the registered masked reconstructed volumetric phase images.

公开(公告)号：US20150038839A1

公开(公告)日：2015-02-05

申请号：US14378179

申请日：2013-02-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Dirk Schaefer ,  Axel Thran ,  Thomas Koehler

IPC: A61B6/00 ,  A61B5/00

CPC classification number: A61B6/5205 ,  A61B5/0075 ,  A61B6/42 ,  G01T1/2008 ,  G01T1/2985

Abstract: An imaging system includes radiation source (106) that emits radiation that traverses an examination region and a portion of a subject therein and a detector array (114) that detects radiation that traverses the examination region and the portion of the subject therein and generates a signal indicative thereof. A volume scan parameter recommender (120) recommends at least one spectral scan parameter value for a volume scan of the portion of the subject based on a spectral decomposition of first and second 2D projections acquired by the radiation source and detector array. The first and second 2D projections have different spectral characteristics. A console (122) employs the recommended at least one spectral scan parameter value to perform the volume scan of the portion of the subject.

Abstract translation: 一种成像系统包括：辐射源（106），其辐射穿过检查区域和被检体的一部分的辐射;以及检测器阵列（114），其检测穿过检查区域和被检体的部分的辐射，并产生信号 指示。 卷扫描参数推荐器（120）基于由辐射源和检测器阵列获取的第一和第二2D投影的光谱分解，推荐对于对象部分的体扫描的至少一个光谱扫描参数值。 第一和第二2D投影具有不同的光谱特征。 控制台（122）采用推荐的至少一个光谱扫描参数值来对被摄体的部分进行体积扫描。

公开(公告)号：US20140321617A1

公开(公告)日：2014-10-30

申请号：US14359337

申请日：2012-11-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Cornelis Reinder Ronda ,  Roland Proksa ,  Axel Thran

IPC: G01T1/20 ,  G01N23/04

CPC classification number: G01T1/2002 ,  G01N23/04 ,  G01T1/2006 ,  G01T1/2018 ,  G01T1/202

Abstract: The invention relates to a detection apparatus for detecting radiation. The detection apparatus comprises a GOS material (20) for generating scintillation light depending on the detected radiation (25), an optical filter (24) for reducing the intensity of a part of the scintillation light having a wavelength being larger than 650 nm, and a detection unit (21) for detecting the filtered scintillation light. Because of the filtering procedure relatively slow components, i.e. components corresponding to a relatively large decay time, of the scintillation light weakly constribute to the detection process or are not detected at all by the detection unit, thereby increasing the temporal resolution of the detection apparatus. The resulting fast detection apparatus can be suitable for kVp-switching computed tomography systems.

Abstract translation: 本发明涉及一种用于检测辐射的检测装置。 检测装置包括用于根据检测到的辐射（25）产生闪烁光的GOS材料（20），用于降低波长大于650nm的闪烁光的一部分的强度的滤光器（24），以及 用于检测滤波的闪烁光的检测单元（21）。 由于滤波过程，相对较慢的分量，即对应于较大衰减时间的分量，闪烁光弱地对于检测处理有贡献，或者根本不被检测单元检测，从而增加了检测装置的时间分辨率。 所得到的快速检测装置可适用于kVp切换计算机断层摄影系统。

公开(公告)号：US11340363B2

公开(公告)日：2022-05-24

申请号：US16962857

申请日：2019-01-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Heiner Daerr ,  Bernhard Johannes Brendel ,  Axel Thran ,  Artur Sossin

IPC: G01T1/29

Abstract: The invention relates to an image reconstruction apparatus comprising a detector value providing unit for providing detector values for each detector element of a plurality of detector elements forming a radiation detector and for each energy bin of a plurality of predefined energy bins, a correlation value providing unit for providing correlation values, wherein a correlation value is indicative of a correlation of a detector value detected by a detector element in an energy bin with at least one of a) a detector value detected by another detector element in the energy bin, b) a detector value detected by another detector element in another energy bin, and c) a detector value detected by the detector element in another energy bin, and a spectral image reconstruction unit for reconstructing a spectral image based on the detector values and the correlation values.

公开(公告)号：US10959688B2

公开(公告)日：2021-03-30

申请号：US15525079

申请日：2015-11-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Bernhard Johannes Brendel ,  Roland Proksa ,  Thomas Koehler ,  Ewald Roessl ,  Heiner Daerr ,  Michael Grass ,  Axel Thran

IPC: A61B6/06 ,  A61B6/03 ,  A61B6/00 ,  A61B6/04

Abstract: An imaging system includes a radiation source (108) configured to rotate about an examination region (106) and emit radiation that traverses the examination region. The imaging system further includes an array of radiation sensitive pixels (112) configured to detect radiation traversing the examination region and output a signal indicative of the detected radiation. The array of radiation sensitive pixels is disposed opposite the radiation source, across the examination region. The imaging system further includes a rigid flux filter device (130) disposed in the examination region between the radiation source and the radiation sensitive detector array of photon counting pixels. The rigid flux filter device is configured to filter the radiation traversing the examination region and incident thereon. The radiation leaving the rigid flux filter device has a predetermined flux.