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：US20230355197A1

公开(公告)日：2023-11-09

申请号：US18029747

申请日：2021-09-27

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： RAOUL FLORENT ,  ARJEN VAN DER HORST ,  ALEXANDRE THIS

IPC: A61B6/00

CPC classification number: A61B6/507 ,  A61B6/481 ,  A61B6/486 ,  A61B6/504 ,  A61B6/5217

Abstract: The invention provides a processor for use in a system for obtaining a blood flow velocity measurement based on an angiogram obtained from a subject. The angiogram is representative of a vessel including a contrast agent therein, and wherein the contrast agent has been provided to the vessel in bursts at a given average frequency, thereby providing contrast data within the angiogram. The processor generates a velocity curve representing the blood flow velocity within the vessel over the cardiac cycle based on an estimated period of the cardiac cycle, an estimated instantaneous blood flow velocity of each angiogram image frame, a calculated confidence value of each angiogram image frame and the estimated point within the cardiac cycle represented by each angiogram image frame.

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.