公开(公告)号：US20220414844A1

公开(公告)日：2022-12-29

申请号：US17778946

申请日：2020-11-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： THOMAS KOEHLER ,  ANDRIY YAROSHENKO ,  HANNS-INGO MAACK ,  THOMAS PRALOW ,  BERND LUNDT

IPC: G06T5/00 ,  G06T5/50 ,  G06T7/20

Abstract: A system (IPS) and related method for image processing, in particular dark-field or phase contrast imaging to reduce motion artifacts. The system comprises an input interface (IN) for receiving a series of projection images (π) acquired by an X-ray imaging apparatus (XI) of an object (OB) for a given projection direction, the imaging apparatus (XI) configured for phase-contrast and/or dark-field imaging A phase-contrast and/or dark-field image generator (IGEN) applies an image generation algorithm to compute a first image based on the series the projection images (π). A motion artifact detector (MD) detects a motion artifact in the first image. A combiner (Σ) combines, if a motion artifact is so detected, a part of the first image with a part of at least one auxiliary image to obtain a combined image. The auxiliary image was previously computed by a gated application of the image generation algorithm in respect of a subset of the series of the projection images (π). The combined image may be output at an output interface (OUT) as a motion artifact reduced image.

公开(公告)号：US20220319731A1

公开(公告)日：2022-10-06

申请号：US17637988

申请日：2020-08-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： THOMAS KOEHLER ,  ANDRIY YAROSHENKO ,  GEREON VOGTMEIER ,  BERND RUDI DAVID ,  JUERGEN MOHR ,  PAULUS RENÉ MARIA VAN BEERS ,  PASCAL MEYER ,  MICHAEL RICHTER ,  JOACHIM SCHULZ

IPC: G21K1/02 ,  A61B6/00

Abstract: In order to improve the mechanical stability of an X-ray grating with top bridges for X-ray dark field imaging and/or X-ray phase contrast imaging, it is proposed to reduce or prevent the undesired high stress on the top bridges by a change in the manufacturing process. Specifically, it is proposed to electroplate the top bridges after the bending. In other words, the electroplating of the top bridges is performed on the bent geometry.

公开(公告)号：US20220296192A1

公开(公告)日：2022-09-22

申请号：US17619757

申请日：2020-06-23

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： ANDRIY YAROSHENKO ,  THOMAS KOEHLER

IPC: A61B6/00 ,  A61B6/03

Abstract: Bone Trabeculae Index for X-Ray Dark-Field Radiography A method (200) and system (20) for expressing signals in a dark field X-ray image of bone (34; 44) in units of a trabecular quantity are disclosed, in which an X-ray dark field image of a bone having a trabecular network is acquired (204) at an image resolution that is not capable of resolving the trabecular network (41) of the bone. Information about the positioning of the scan bone relative to the X-ray dark field imaging apparatus used for acquisition is determined. Signals in the X-ray dark field image of the bone are converted (206) into a corresponding trabecular quantity, wherein the conversion accounts for the determined information about the positioning of the bone and depends on a plurality of generated X-ray dark field image signal normalization values, generated for a sample bone.

公开(公告)号：US20200378029A1

公开(公告)日：2020-12-03

申请号：US16771268

申请日：2018-12-10

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

Inventor： GEREON VOGTMEIER ,  CHRISTIAAN KOK ,  THOMAS KOEHLER ,  ANDRIY YAROSHENKO ,  JOHANNES WILHELMUS MARIA JACOBS ,  SANDEEP NIKRISHNAN ,  DOROTHEE HERMES ,  ANTONIUS MARIA BERNARDUS VAN MOL

IPC: C25D11/00 ,  C25D11/24 ,  C25D17/10 ,  G21K1/06

Abstract: The present invention relates to a device for anodized oxidation of an anode element for a curved X-ray grating, the device (10) comprising: an anode element (12); a cathode element (14); an electrolytic medium (16); a conductor element (18); and a carrier element (20); wherein the anode element (12) comprises a first side (11) and a second side (13), wherein the second side (13) faces opposite to the first side (11); wherein the carrier element (20) comprises a curved surface section (21) that extends along a curvature around a center of curvature (30); wherein the carrier element (20) is configured to receive the second side (13) of the anode element (12) for attaching the conductor element (18) to the first side (11) of the anode element (12); wherein the curved surface section (21) is configured to receive the conductor element (18) after detaching the second side (13) of the anode element (12) from the carrier element (20); wherein the electrolytic medium (16) is configured to connect the anode element (12) and the cathode element (14); wherein the cathode element (14) in conjunction with the anode element (12) and the electrolyte medium (16) is configured to generate at least one group of electric field lines (26) that define a plane (31, 33, 35, 37, 39), wherein at least a straight extrapolation (32) of the group of electric field lines intersect the center of curvature, wherein the generation of the at least one group of electric field lines (26) results in an anodized oxidation of the anode element (12) on the curved surface section (21). The invention provides a device (10) that avoids the risk of damaging the grating structures and getting a low yield.