公开(公告)号：US10448909B2

公开(公告)日：2019-10-22

申请号：US16082986

申请日：2017-02-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Herfried Karl Wieczorek ,  Andreas Goedicke ,  Peter Lex Alving

IPC: A61B6/00 ,  A61B6/03 ,  G01T1/161 ,  G01T1/16 ,  G21K1/02 ,  G06T11/00

Abstract: The invention relates to a combined imaging detector (110) for the detection of x-ray and gamma quanta. The combined imaging detector (110) is adapted for simultaneous detection of gamma and x-ray quanta. The combined imaging detector (110) includes an x-ray anti-scatter grid (111), a layer of x-ray scintillator elements (112), a first photodetector array (113), a layer of gamma scintillator elements (114), and a second photodetector array (115) that are arranged in a stacked configuration along a radiation-receiving direction (116). The x-ray anti-scatter grid (111) comprises a plurality of septa (117A, B, C) that define a plurality of apertures (118) which are configured to collimate both x-ray quanta and gamma quanta received from the radiation receiving direction (116) such that received gamma quanta are collimated only by the x-ray anti-scatter grid (111). The use of the x-ray anti-scatter grid as a collimator for received gamma quanta results in a significantly lighter combined imaging detector.

公开(公告)号：US10942282B2

公开(公告)日：2021-03-09

申请号：US16329824

申请日：2017-09-06

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Herfried Karl Wieczorek ,  Johannes Wilhelmus Maria Jacobs ,  Herman Stegehuis ,  Alessandro Radaelli ,  Christiaan Kok ,  Peter Lex Alving

IPC: G01T1/20 ,  G01T1/164 ,  A61B6/00 ,  A61B6/03 ,  G01T1/161 ,  A61B6/06

Abstract: The invention relates to a combined imaging detector for detection of gamma and x-ray quanta comprising an x-ray detector (31) for generating x-ray detection signals in response to detected x-ray quanta and a gamma detector (32) for generating gamma detection signals in response to detected gamma quanta. The x-ray detector (31) and the gamma detector (32) are arranged in a stacked configuration along a radiation-receiving direction (33). The gamma detector (32) comprises a gamma collimator plate (320) comprising a plurality of pinholes (321), and a gamma conversion layer (322, 324) for converting detected gamma quanta into gamma detection signals.

公开(公告)号：US10788595B2

公开(公告)日：2020-09-29

申请号：US16078811

申请日：2017-02-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Peter Lex Alving ,  Heidrun Steinhauser ,  Herman Stegehuis

IPC: G01T1/29 ,  A61B6/00 ,  G01T1/20 ,  G01T1/24 ,  G01N23/04 ,  G01N23/083 ,  H04N5/32 ,  H04N5/3745

Abstract: The present invention relates to an apparatus for imaging an object. It is described to receive (110) by at least a portion of first pixels of a first area (A, A1, A2, A3, A4, A5, A6, A7, A8) of an X-ray detector (20) first radiation emitted by at least one X-ray source (30). The X-ray detector is configured such that X-ray radiation received by a pixel leads to the generation of signal in that pixel. A plurality of first signals representative of corresponding signals on the plurality of first pixels are stored (120) in at least one first plurality of storage nodes associated with the first area. Second radiation emitted by the at least one X-ray source (30) is received (150) by at least a portion of second pixels of a second area (B, B1, B2, B3, B4, B5, B6, B7, B8; C) of the X-ray detector. A plurality of second signals representative of corresponding signals on the plurality of second pixels are stored (190) in at least one second plurality of storage nodes associated with the second area.

公开(公告)号：US10371830B2

公开(公告)日：2019-08-06

申请号：US15763489

申请日：2016-10-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Johannes Wilhelmus Maria Jacobs ,  Jorrit Jorritsma ,  Heidrun Steinhauser ,  Onno Jan Wimmers ,  Peter Lex Alving ,  Herman Stegehuis ,  Herfried Karl Wieczorek

IPC: G01T1/00 ,  G01T1/20 ,  G01T1/161 ,  G01T1/164 ,  G01T1/202

Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta has a multi-layered structure. A rear scintillator layer (5) is configured to emit a burst of scintillation photons responsive to a high-energy radiation quantum being absorbed by the rear scintillator layer (5). A rear photosensor layer (6) attached to a back side of the rear scintillator layer (5) is configured to detect scintillation photons generated in the rear scintillator layer (5). A front scintillator layer (3) arranged in front of the rear scintillator layer (5) opposite the rear photosensor layer (6) is configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3). A front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5) is configured to detect scintillation photons generated in the front scintillator layer (3). The high-energy radiation quantum is a gamma ray and the low-energy radiation quantum is an X-ray.