公开(公告)号：US20220079551A1

公开(公告)日：2022-03-17

申请号：US17423892

申请日：2020-02-04

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Stéphane ALLAIRE ,  Odile BONNEFOUS ,  Helene LANGET ,  Scott William DIANIS ,  Jimmy Li-Shin SU ,  Qifeng WEI

IPC: A61B8/06 ,  A61B8/08 ,  A61B8/00

Abstract: The invention provides a method for assessing cardiac valve regurgitation. The method includes obtaining 4D ultrasound data of a region of interest, wherein the region of interest comprises a cardiac valve. The 4D ultrasound data comprises a time sequence of 3D ultrasound images comprising B-mode ultrasound data and color Doppler ultrasound data. Image stabilization is performed on the images of the time sequence of 3D ultrasound images and a dynamic jet is then segmented from the time sequence of stabilized 3D ultrasound images. A dynamic surface model is fit to the valve in the time sequence of stabilized 3D ultrasound images based on the segmented jet. The method further includes identifying a dynamic regurgitant orifice based on the applied surface model and the time sequence of stabilized 3D ultrasound images and fitting a flow convergence model to the time sequence of stabilized 3D ultrasound images based on the identified dynamic regurgitant orifice. A regurgitant flow is then estimated based on the identified regurgitant orifice.

公开(公告)号：US20190083052A1

公开(公告)日：2019-03-21

申请号：US15532968

申请日：2015-12-01

Applicant: Koninklijke Philips N.V.

Inventor： Hanno Heyke HOMANN ,  Michael GRASS ,  Raoul FLORENT ,  Holger SCHMITT ,  Odile BONNEFOUS ,  Hannes NICKISCH

IPC: A61B6/00 ,  A61M5/00 ,  G06T7/00 ,  G06T7/254

Abstract: The present invention relates to a device (1) for fractional flow reserve determination. The device (1) comprises a model generator (10) configured to generate a three-dimensional model (3DM) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS), based on a partial segmentation of the imaged vascular vessel tree (VVT). Further, the device comprises an image processor (20) configured to calculate a blood flow (Q) through the stenosed vessel segment (SVS) based on an analysis of a time-series of X-ray images of the vascular vessel tree (VVT). Still further, the device comprises a fractional-flow-reserve determiner (30) configured to determine a fractional flow reserve (FFR) based on the three-dimensional model (3DM) and the calculated blood flow.

公开(公告)号：US20160035103A1

公开(公告)日：2016-02-04

申请号：US14782210

申请日：2014-04-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Jean STAWIASKI ,  Odile BONNEFOUS ,  Daniel SIMON ANNA RUIJTERS ,  Fred Simon Berend VAN NIJNATTEN

IPC: G06T7/20 ,  G06T7/00 ,  A61B6/00

CPC classification number: G06T7/20 ,  A61B6/481 ,  A61B6/504 ,  A61B6/52 ,  G06T7/11 ,  G06T7/174 ,  G06T7/187 ,  G06T2207/10016 ,  G06T2207/10116 ,  G06T2207/30101 ,  G06T2207/30104

Abstract: The present invention relates to vessel segmentation. In order to provide an improved way of providing segmentation information with reduced X-ray dose, an X-ray image processing device (10) is provided that comprises an interface unit (12), and a data processing unit (14). The interface unit is configured to provide a sequence of time series angiographic 2D images of a vascular structure obtained after a contrast agent injection. The data processing unit is configured to determine an arrival time index of a predetermined characteristic related to the contrast agent injection for each of a plurality of determined pixels along the time series, and to compute a connectivity index for each of the plurality of the determined pixels based on the arrival time index. The data processing unit is configured to generate segmentation data of the vascular structure from the plurality of the determined pixels, wherein the segmentation data is based on the connectivity index of the pixels. The data processing unit is configured to provide the segmentation data for further purposes.

Abstract translation: 本发明涉及血管分割。 为了提供一种提供具有降低的X射线剂量的分割信息的改进方式，提供了包括接口单元（12）和数据处理单元（14）的X射线图像处理设备（10）。 接口单元被配置为提供在造影剂注射后获得的血管结构的时间序列血管造影2D图像的序列。 数据处理单元被配置为沿着时间序列确定与多个确定的像素中的每一个相关的与造影剂注入相关的预定特性的到达时间指数，并且计算多个所确定的像素中的每一个的连接性指标 根据到达时间指标。 数据处理单元被配置为从多个确定的像素生成血管结构的分割数据，其中分割数据基于像素的连接性索引。 数据处理单元被配置为为进一步的目的提供分段数据。