公开(公告)号：US20220175328A1

公开(公告)日：2022-06-09

申请号：US17611596

申请日：2020-05-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Herfried Karl WIECZOREK ,  Roger STEADMAN BOOKER ,  Peter Lex ALVING

IPC: A61B6/00

Abstract: The invention relates to a system for imaging an object in an x-ray imaging mode and in a gamma imaging mode. A radiation detector (1) of the system comprises a conversion unit (202) including a plurality of detector pixels (2061, . . . ,M) and generating for each detection event a detection signal indicative of an energy of the event, and a counting unit (203) including for each detector pixel (2061, . . . ,M) a plurality of comparators (209i; 1, . . . ,N) and associating each detection event to one of a plurality of predetermined energy bins based on the detection signals using the comparators (209i; 1, . . . ,N). In the x-ray imaging mode, the comparators (209i; 1, . . . ,N) of one pixel (2061, . . . ,M), and in the gamma imaging mode, the comparators (209i; 1, . . . ,N) of several pixels (2061, . . . ,M) are available for the association so that more energy bins are available in the gamma imaging mode than in the x-ray imaging mode.

公开(公告)号：US20180275289A1

公开(公告)日：2018-09-27

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: G01T1/20 ,  G01T1/164 ,  G01T1/202

CPC classification number: G01T1/2018 ,  G01T1/1611 ,  G01T1/1642 ,  G01T1/2023

Abstract: A radiation detector for combined detection of low-energy radiation quanta and high-energy radiation quanta, the radiation detector (8) having a multi-layered structure, comprising: a rear scintillator layer (5) 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), said rear photosensor layer (6) 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), said front scintillator layer (3) configured to emit a burst of scintillation photons responsive to a low-energy radiation quantumbeing absorbed by the front scintillator layer (3); and a front photosensor layer (2) attached to a front side of the front scintillator layer (3) opposite the rear scintillator layer (5), said front photosensor layer (2) configured to detect scintillation photons generated in the front scintillator layer (3), wherein the high-energy radiation quantum is a gamma ray and the low-energy radiation quantum is an X-ray.

公开(公告)号：US20190243005A1

公开(公告)日：2019-08-08

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: G01T1/164 ,  A61B6/06 ,  A61B6/00

CPC classification number: G01T1/1644 ,  A61B6/037 ,  A61B6/06 ,  A61B6/4233 ,  A61B6/4258 ,  A61B6/4291 ,  A61B6/4417 ,  A61B6/4441 ,  A61B6/486 ,  A61B6/487 ,  A61B6/5235 ,  G01T1/1611 ,  G01T1/1647 ,  G01T1/1648

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.