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：US11099279B2

公开(公告)日：2021-08-24

申请号：US15756620

申请日：2016-09-15

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Christoph Herrmann ,  Amir Livne

IPC: G01T1/17 ,  G01T1/24

Abstract: A detector signal is corrected by superimposing the detector signal with a correction signal. For providing a valid correction signal, a sampling pulse is periodically or randomly provided. The sampling pulse serves as the initiator for sampling a process signal. During the sampling, the process signal is observed. In case a pulse at the process signal is detected, the sampling is assumed as not being suitable to correct the detector signal, since the pulse affects the process signal. Otherwise, the process signal is further observed during a validation period to validate whether the sampled process value of the process signal has already been influenced by an upcoming pulse at the process signal. In case the sampling is assumed as valid, the sampled process value is used as a basis for providing the correction signal.

公开(公告)号：US11058377B2

公开(公告)日：2021-07-13

申请号：US16614114

申请日：2018-05-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Gereon Vogtmeier ,  Jens Von Berg ,  Ravindra Bhat ,  Roger Steadman Booker

IPC: H05G1/02 ,  A61B6/00

Abstract: The present invention relates to a device (1) for determining positioning data for an X-ray image acquisition device (2) on a mobile patient support unit (3), the device comprising: a processing unit (10); and a status detector (11); wherein the status detector (11) is configured to acquire geometry data and type data of a mobile patient support unit (3) and of an X-ray image acquisition device (2) on the mobile patient support unit (3), and to transmit a status signal comprising the geometry data and the type data; wherein the processing unit (10) is configured to receive the status signal and data about region of interest position on the patient; and wherein, based on the status signal and the region of interest position, the processing unit (10) is configured to determine positioning and alignment data for an X-ray image acquisition device (2) on the mobile patient support unit (3), and to provide an image acquisition protocol for the X-ray image acquisition device (2). The device (1) may provide an X-ray image acquisition system having a simple and easy to operate construction.

公开(公告)号：US11002865B2

公开(公告)日：2021-05-11

申请号：US15776085

申请日：2016-11-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ewald Roessl ,  Roger Steadman Booker

IPC: G01T1/29

Abstract: The invention relates to a detection values determination system, especially for photon-counting CT scanners, comprising a detection pulse providing unit for providing detection pulses for an array of detection pixels 17, which is provided with an anti-charge-sharing grid 15 for suppressing charge sharing between different clusters 14 of the detection pixels, wherein the detection pulses are indicative of the energy of photons incident on the detection pixels. Charge-sharing-corrected detection values are determined based on the provided detection pulses, wherein for determining a charge-sharing-corrected detection value for a detection pixel of a cluster only detection pixels of the same cluster are considered. This allows for a relatively high detective quantum efficiency, wherein the technical efforts for providing the charge sharing correction can be relatively low.

公开(公告)号：US10725188B2

公开(公告)日：2020-07-28

申请号：US15762160

申请日：2016-10-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Ewald Roessl ,  Heiner Daerr

IPC: G01T7/00 ,  G01T1/24 ,  A61B6/00

Abstract: Photon-counting x-ray detectors (3) suffer from a degradation of their performance due to polarization. In order to correct the effects of polarization to the generated x-ray images, the invention suggests (i) exposing the radiation detector (3) to a first radiation pulse emitted by a further radiation source (11) and obtaining a first electric pulse signal generated by the radiation detector (3) in response thereto, (ii) later exposing the 5 radiation detector (3) to a second radiation pulse emitted by the further radiation source (11) during the acquisition of the image and obtaining a second electric pulse signal generated by the radiation detector (3) in response thereto, and (iii) comparing amplitudes of the first and second electric pulse signals and generating the x-ray image based on a result of the comparison. The invention provides a corresponding x-ray device and a corresponding method.

公开(公告)号：US10288748B2

公开(公告)日：2019-05-14

申请号：US15035515

申请日：2014-11-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Gereon Vogtmeier ,  Roger Steadman Booker

IPC: A61B6/00 ,  G01T1/20 ,  A61B6/03 ,  A61B6/04

Abstract: The present invention relates to a detection module (22) for the detection of ionizing radiation emitted by a radiation source (20) comprising a scintillator element (24) for emitting scintillation photons in response to incident ionizing radiation, a first photosensitive element (32a) optically coupled to the scintillator element (24) for capturing scintillation photons (30) and a flexible substrate (34) for supporting the first photosensitive element (32a). The present invention also relates to an imaging device (10) that comprises such a detection module (22).

公开(公告)号：US10054692B2

公开(公告)日：2018-08-21

申请号：US15536321

申请日：2015-12-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ewald Roessl ,  Christoph Herrmann ,  Roger Steadman Booker ,  Klaus Jürgen Engel

IPC: G01T1/18 ,  G01T1/24 ,  G01T1/208 ,  G01T1/28 ,  G01T1/36 ,  G01T1/185

CPC classification number: G01T1/241 ,  G01T1/185 ,  G01T1/208 ,  G01T1/247 ,  G01T1/28 ,  G01T1/366

Abstract: The present invention relates to a detector (22′) for detecting ionizing radiation, comprising: a directly converting semi-conductor layer (36) for producing charge carriers in response to incident ionizing radiation; and a plurality of electrodes (34) corresponding to pixels for registering the charge carriers and generate a signal corresponding to registered charge carriers; wherein an electrode of the plurality of electrodes (34) is structured to two-dimensionally intertwine with at least two adjacent electrodes to register the charge carriers by said electrode and by at least one adjacent electrode. The present invention further relates to a detection method and to an imaging apparatus.

公开(公告)号：US09955930B2

公开(公告)日：2018-05-01

申请号：US15118911

申请日：2015-11-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roger Steadman Booker ,  Amir Livne

IPC: A61B6/03 ,  G01T1/24 ,  A61B6/00 ,  H01L27/146

CPC classification number: A61B6/4241 ,  A61B6/03 ,  A61B6/4208 ,  A61B6/4233 ,  G01T1/24 ,  G01T1/243 ,  H01L27/14618 ,  H01L27/14636 ,  H01L27/14658

Abstract: The present invention relates to a sensor device for detecting radiation signals. To enable high signal integrity and cost efficiency while maintaining the capability of being four-sidedly buttable, the proposed sensor device comprises a sensor array (22) comprising a plurality of detectors (11, 11a-d), a sensor element (14) for converting said received radiation signals (74, 74′) into a plurality of corresponding electric signals, an interposer element (16, 16a-d) extending laterally between a first side (28) and a second side (30), and an integrated circuit element (18, 18a-d). The interposer element (16, 16a-d) comprises a front surface (24) facing said sensor element (14) and a back surface (26) parallel to said front surface (24), wherein a front contact arrangement (36) is provided on said front surface (24) for directing said electric signals to a back contact arrangement (40) provided on said back surface (26). The integrated circuit element faces said back surface (26) and is electrically connected to said back contact arrangement (40).

公开(公告)号：US09833202B2

公开(公告)日：2017-12-05

申请号：US15108401

申请日：2015-12-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Heiner Daerr ,  Roger Steadman Booker ,  Gereon Vogtmeier ,  Ewald Roessl ,  Gerhard Martens ,  Carolina Ribbing

IPC: H05G1/26 ,  A61B6/03 ,  A61B6/00 ,  A61B6/06

CPC classification number: A61B6/032 ,  A61B6/06 ,  A61B6/4042 ,  A61B6/4078 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/485 ,  A61B6/582 ,  H05G1/30 ,  H05G1/58

Abstract: The invention relates to a system (31) for generating spectral computed tomography projection data. A spectral projection data generation device (6) comprising an energy-resolving detector generates spectral computed tomography projection databased on polychromatic radiation (4), which has been provided by a radiation device (2), after having traversed an examination zone (5), and a reference values generation device generates energy-dependent reference values based on radiation, which has not traversed the examination zone. A spectral parameter providing unit (12) provides a spectral parameter being indicative of a spectral property of the radiation device based on the energy-dependent reference values. In particular, spectral properties of the radiation device can be monitored over time, wherein this information can be used for, for instance, correcting the spectral computed tomography projection data, and/or, if undesired spectral properties of the radiation device are indicated, triggering a replacement of the radiation device.

公开(公告)号：US09535167B2

公开(公告)日：2017-01-03

申请号：US14387950

申请日：2013-03-08

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Roland Proksa ,  Roger Steadman Booker

IPC: G01T1/17 ,  G01T1/16

CPC classification number: G01T1/171 ,  G01T1/1606

Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region, a paralyzable photon counting detector pixel (110) that detects photons traversing the examination region and arriving at an input photon rate and that generates a signal indicative thereof, high flux electronics (122) that produce a total time over threshold value each integration period based on the signal, a reconstruction parameter identifier (124) that estimates the input photon rate based on the total time over threshold value and identifies a reconstruction parameter based on the estimate, and a reconstructor (130) that reconstructs the signal based on the identified reconstruction parameter.

Abstract translation: 成像系统（100）包括发射穿过检查区域的辐射的辐射源（108），用于检测穿过检查区域并达到输入光子速率并产生信号的信号的可分析光子计数检测器像素（110） 基于该信号，每个积分周期产生超过阈值的总时间的高通量电子器件122;基于超过阈值的总时间估计输入光子速率的重构参数标识符（124），并识别重建 基于所述估计的参数，以及基于所识别的重建参数重构所述信号的重建器（130）。