公开(公告)号：US20240164733A1

公开(公告)日：2024-05-23

申请号：US18282595

申请日：2022-03-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： RAOUL FLORENT ,  CLAIRE LEVRIER ,  CHRISTIAN HAASE ,  HAITHEM BOUSSAID

IPC: A61B6/50 ,  A61B6/00 ,  G06T7/00

CPC classification number: A61B6/504 ,  A61B6/481 ,  A61B6/5258 ,  G06T7/00 ,  G06T2207/10116

Abstract: The present invention relates to subtraction imaging. In order provide further improved accuracy of masking images, a device (10) for digital subtraction imaging is provided comprising an image data input (12), a data processor (14) and an output interface (16). 3D image data (22) of a region of interest of an object is received that comprises a 3D representation of the object based on a reconstruction from a plurality of 2D projection images. Further, a 2D live X-ray image (24) of the region of interest is received. The 3D image data and the 2D live X-ray image are registered, wherein a matching pose of the 3D image data corresponding to the 2D live X-ray image is determined. A digitally reconstructed radiography is computed from the 3D image data based on the determined matching pose to generate a 2D mask image. For the 2D mask image, current data related to the 2D live X-ray image is used to achieve an adapted 2D mask image, wherein the data related to 10 the 2D live X-ray image comprises 2D live acquisition parameters and/or data of the 2D live X-ray image. The generated adapted 2D mask is subtracted image from the 2D live X-ray image a digital image highlighting changes in the region of interest is provided.

公开(公告)号：US20240404057A1

公开(公告)日：2024-12-05

申请号：US18697876

申请日：2022-09-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： RAOUL FLORENT ,  CLAIRE LEVRIER ,  ALEXANDRE THIS ,  HOLGER SCHMITT ,  ARJEN VAN DER HORST

IPC: G06T7/00 ,  G16H30/20

Abstract: A system (100) for determining flow parameters of a lumen (110) in a hyperemic state induced subsequent to a contrast agent injection (Inj 1) into the lumen in a basal state, is provided. The system comprising one or more processors (120) configured to: determine (S110), based on received angiographic data representing the injected contrast agent and/or received injector data representing the injected contrast agent, a temporal window (TH0, TH1) representing a duration of the induced hyperemic state; and output (S120) a signal (Sh) indicative of the temporal window (TH0, TH1).

公开(公告)号：US20170178378A1

公开(公告)日：2017-06-22

申请号：US15321084

申请日：2015-06-25

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： STEWART YOUNG ,  JENS VON BERG ,  RAOUL FLORENT ,  CLAIRE LEVRIER

IPC: G06T11/60 ,  G06T7/11

CPC classification number: G06T11/60 ,  G06T7/11 ,  G06T7/174 ,  G06T11/00 ,  G06T2200/24 ,  G06T2210/41

Abstract: Apparatuses (IP) and related methods to visualize previously suppressed image structures in a radiograph (RD). A graphical indicator (505, 510, 515) is superimposed on the radiograph (RD) to indicate the suppressed image structure (412). The apparatuses allow toggling in our out the graphical indicator (505, 510, 515) or to toggle between different graphical renderings thereof.

公开(公告)号：US20240407656A1

公开(公告)日：2024-12-12

申请号：US18698045

申请日：2022-09-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： ALEXANDRE THIS ,  RAOUL FLORENT ,  CLAIRE LEVRIER ,  HOLGER SCHMITT ,  ARJEN VAN DER HORST

IPC: A61B5/0215 ,  A61B6/00 ,  A61B6/50

Abstract: A system (100) for providing a normalised microcirculatory resistance value for a vessel (110), is provided. The system includes one or more processors (120) configured to: compute (S110) a microcirculatory resistance value for the vessel (110) based on a transit time (TT) taken for an injected bolus to travel between a proximal position (Posa) in the vessel, and a distal position (Posd) in the vessel; and divide (S120) the computed microcirculatory resistance value by a transit length (dT) representing a length of the vessel between the proximal position (Posa) and the distal position (Posd), to provide the normalised microcirculatory resistance value.

公开(公告)号：US20210145391A1

公开(公告)日：2021-05-20

申请号：US16623198

申请日：2018-06-26

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： BART PIERRE ANTOINE JOZEF HOORNAERT ,  RAOUL FLORENT ,  CLAIRE LEVRIER ,  BERNARDUS MARIUS HUBERTUS GEVERS

IPC: A61B6/00 ,  G06T5/00 ,  G16H30/40

Abstract: The present invention relates to image contrast enhancement. In order to provide improved and stable contrast enhancement for each acquired image, a device (10) for image contrast enhancement of an X-ray image of a vascular structure is provided. The device (10) comprises an input unit (12) and a processing unit (14). The input unit is configured to provide an acquired X-ray image of a vascular structure with a contrast injection. The contrast injection is performed with a current contrast injection setting having at least one contrast injection parameter. The input unit is further configured to provide a generic vascular structure. The input unit is also configured to provide the current contrast injection setting. The processing unit is configured to determine an assessed contrast parameter for the generic vascular structure based on the current contrast injection setting. The processing unit is further configured to determine an adapted image contrast enhancement for the generic vascular structure based on the assessed contrast parameter. The processing unit is also configured to apply the adapted image contrast enhancement to the acquired X-ray image in order to generate a contrast-enhanced X-ray image.