公开(公告)号：US10959693B2

公开(公告)日：2021-03-30

申请号：US16500858

申请日：2018-12-10

Applicant: KONINKLIJKE PHILIPS N.V. ,  NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO

Inventor： Christiaan Kok ,  Gereon Vogtmeier ,  Thomas Koehler ,  Johannes Wilhelmus Maria Jacobs ,  Sandeep Unnikrishnan ,  Dorothee Hermes ,  Antonius Maria Bernardus Van Mol

IPC: G01N23/04 ,  A61B6/00

Abstract: The present invention relates to a device for aligning an X-ray grating to an X-ray radiation source, the device (10) comprising at least two flat X-ray grating segments (11-19); at least one alignment unit (31-39) for aligning one of the at least two flat X-ray grating segments; wherein the at least two flat X-ray grating segments (11-19) are arranged in juxtaposition and are forming an X-ray grating (20); wherein the at least two flat X-ray grating segments (11-19) each comprise a grating surface (41-49) for X-ray radiation, each grating surface (41-49) comprising a geometrical center; wherein normals (21-29) to each of the grating surfaces (41-49) define a common plane (73), wherein the normals (21-29) intersect the geometrical center of the grating surface (41-49); wherein at least a first of the at least two flat X-ray grating segments (11-19) is rotatable around an axis (131-139) that is perpendicular to the common plane (73); and wherein the first of the at least two flat X-ray grating segments (11-19) that is rotatable around the axis (131-139) is connected to a first of the at least one alignment unit (31-39). The invention provides a device (10) and a method (100) which provide an improved X-ray grating (20).

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：US11762107B2

公开(公告)日：2023-09-19

申请号：US16470385

申请日：2017-12-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Kok

IPC: A61B6/00 ,  G01T1/20 ,  G01T1/24 ,  G01T1/164 ,  G01T1/161 ,  G01T1/16 ,  A61B6/03

CPC classification number: G01T1/20181 ,  A61B6/03 ,  A61B6/032 ,  A61B6/035 ,  A61B6/037 ,  A61B6/42 ,  A61B6/4208 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/4258 ,  A61B6/4266 ,  A61B6/44 ,  A61B6/4429 ,  A61B6/4435 ,  A61B6/4441 ,  A61B6/4447 ,  G01T1/16 ,  G01T1/161 ,  G01T1/1603 ,  G01T1/164 ,  G01T1/1606 ,  G01T1/1611 ,  G01T1/1612 ,  G01T1/1614 ,  G01T1/1615 ,  G01T1/1617 ,  G01T1/1618 ,  G01T1/20 ,  G01T1/2002 ,  G01T1/2006 ,  G01T1/2008 ,  G01T1/2018 ,  G01T1/20183 ,  G01T1/20185 ,  G01T1/24 ,  G01T1/243 ,  G01T1/249

Abstract: The invention relates to a combined detector (660) comprising a gamma radiation detector (100) and an X-ray radiation detector (661). The gamma radiation detector (100) comprises a gamma scintillator array (101x, y), an optical modulator (102) and a first photodetector array (103a, b) for detecting the first scintillation light generated by the gamma scintillator array (101x, y). The optical modulator (102) is disposed between the gamma scintillator array (101x, y) and the first photodetector array (103a, b) for modulating a transmission of the first scintillation light between the gamma scintillator array (101x, y) and the first photodetector array (103a, b). The optical modulator (102) comprises at least one optical modulator pixel having a cross sectional area (102′) in a plane that is perpendicular to the gamma radiation receiving direction (104). The cross sectional area of each optical modulator pixel (102′) is greater than or equal to the cross sectional area of each photodetector pixel (103′a, b).

公开(公告)号：US11058375B2

公开(公告)日：2021-07-13

申请号：US16305904

申请日：2017-06-01

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Heidrun Steinhauser ,  Christiaan Kok

IPC: A61B6/00

Abstract: An X-ray imaging apparatus (IA) having a plurality of X-ray sources (sj) comprising an anti-scatter grid (ASG) for X-ray imaging comprising at least two sets (Mj) of linear x-radiation opaque strips (STj). Each of the strips in the at least two sets have a respective longitudinal axis (Li). There are at least two strips from different sets of the at least two sets that have non-parallel longitudinal axes.

公开(公告)号：US10682106B2

公开(公告)日：2020-06-16

申请号：US16321524

申请日：2017-08-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christiaan Kok ,  Johannes Wilhelmus Maria Jacobs ,  Robertus Marinus Wilhelmus Raaijmakers

IPC: G02B1/04 ,  A61B6/00 ,  G21K1/02

Abstract: An anti-scatter device (10) for an X-ray detector (100) is provided. The anti-scatter device (10) comprises an anti-scatter grid (12) with a plurality of slats (13) for absorbing X-rays and a cover element (14, 14a) arranged on a side (17a) of the anti-scatter grid (12), wherein ends (16a) of the slats (13) are coupled to the cover element (14, 14a), and the cover element (14, 14a) comprises an electroactive polymer material. A dimension of the cover element (14, 14a) is changeable by applying a voltage to the electroactive polymer material, such that a distance between the ends (16a) of the slats is changeable by applying the voltage.