公开(公告)号：US12165780B2

公开(公告)日：2024-12-10

申请号：US17988800

申请日：2022-11-17

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Johannes Wilhelmus Maria Jacobs ,  Nishant Singh

IPC: G21K1/02 ,  G01T1/16

Abstract: A multi-layer X-ray detector comprises a first X-ray converter, a first sensor, a second X-ray converter, a second sensor, and an internal anti-scatter device. The first sensor is located at a first sensor layer and is configured to detect radiation emitted from the first X-ray converter. The second sensor is located at a second sensor layer and is configured to detect radiation emitted from the second X-ray converter. The first X-ray converter and the first sensor form a first detector pair, and the second X-ray converter and the second sensor form a second detector pair. The internal anti-scatter device comprises a plurality of X-ray absorbing septa walls and is located between the first detector pair and the second detector pair. No structure of the internal anti-scatter device is located within either layer of the first detector pair, and no structure of the anti-scatter device is located within either layer of the second detector pair. The plurality of septa walls comprises a plurality of first septa walls substantially parallel to each other, and wherein a spacing between the first septa walls in a first direction is equal to an integer multiple n of detector pixel pitch of the first sensor and/or of the second sensor in the first direction, wherein n=2, 3, 4, . . . N.

公开(公告)号：US11864932B2

公开(公告)日：2024-01-09

申请号：US17797294

申请日：2021-12-08

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Nishant Singh ,  Klaus Jürgen Engel ,  Johannes Wilhelmus Maria Jacobs ,  Bernd Menser ,  Lester Donald Miller ,  Fred Simon Berend Van Nijnatten

IPC: A61B6/03 ,  A61B6/00

CPC classification number: A61B6/032 ,  A61B6/4007

Abstract: The disclosure relates to an X-ray imaging system for acquiring two-dimensional or three-dimensional images of a subject. A relative position of an X-ray emitting region, as seen in a coordinate system which is stationary relative to an anti-scatter arrangement and/or an X-ray sensitive surface is controlled so that a first and a second image are acquired at different relative positions of the X-ray emitting region relative to the anti-scatter arrangement and/or the X-ray sensitive surface (10). A data processing system of the imaging system generates an output image, based on each of the images. In the output image, artefacts generated by the anti-scatter arrangement, are reduced, suppressed or eliminated compared to the first and the second image.

公开(公告)号：US12016712B2

公开(公告)日：2024-06-25

申请号：US18028045

申请日：2022-05-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Johannes Wilhelmus Maria Jacobs ,  Lester Donald Miller ,  Nishant Singh ,  Bernd Menser

IPC: G21K1/02 ,  A61B6/00 ,  A61B6/42 ,  B22F10/28

CPC classification number: A61B6/4291 ,  A61B6/4494 ,  B22F10/28

Abstract: The present invention provides methods and devices for making an anti-scatter grid for a radiographic imaging device identifiable. A method for providing an anti-scatter grid (100) for a radiographic imaging device comprises forming, by an additive manufacturing process, a grid pattern (110) in accordance with a product specification of the anti-scatter grid (100) to be provided; and forming, by an additive manufacturing process, a number of structural modifications (121) in or at the grid pattern in a manner making the number of structural modifications (121) image-based recognizable when the anti-scatter grid (100) is viewed according to its intended use in a viewing direction from a radiation source of the radiographic imaging device, and in a unique identification pattern (120) creating a unique identifier to make the anti-scatter grid to be provided identifiable among one or more others.