中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

51 records (took 0.019 seconds)

    X-RAY IMAGING OF AN OBJECT WITH THREE-DIMENSIONAL LOCALIZATION OF AN INTERVENTIONAL DEVICE
    13.
    发明申请
    X-RAY IMAGING OF AN OBJECT WITH THREE-DIMENSIONAL LOCALIZATION OF AN INTERVENTIONAL DEVICE 审中-公开

    公开(公告)号：US20180279973A1

    公开(公告)日：2018-10-04

    申请号：US15763882

    申请日：2016-09-29

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： DIRK SCHAEFER ,  MICHAEL GRASS ,  THOMAS KOEHLER

    IPC: A61B6/12 ,  A61B6/00

    Abstract: The invention relates to an X-ray apparatus (10) and a method (64) for a depth localization of a catheter (12) within an object of interest (22), arranged at an object receiving space (14) of the X-ray imaging apparatus. The X-ray imaging apparatus comprises an X-ray source (16) and an X-ray detector (20). Between the X-ray source and the X-ray detector, at least one interferometer (24) formed by a phase grating is arranged. The X-ray detector is configured to detect X-ray radiation, which has been influenced by the phase grating and the object of interest and the catheter, which may also be arranged at the object receiving space and/or the object of interest. The X-ray detector is configured to provide a detector signal s. A signal component of the detector signal relates to a phase-contrast detector signal component, which may be calculated on the basis of the detector signal and may represent a visibility loss. It has been found, that a repective visibility loss signal component of the detector signal depends on a distance between the catheter and the phase grating. Accordingly, depth information for the catheter may be calculated on the basis of the visibility loss signal component of the detector signal. Correspondingly, a three-dimensional position of the catheter at the object receiving space may be calculated. It is to be noted, that the catheter may just be one example of an interventional device, which may be arranged at the object receiving space. As an effect, a three-dimensional tracking of the interventional device, in particular of the catheter, may be enabled from the X-ray detector signal.

    INTERVENTIONAL X-RAY SYSTEM WITH AUTOMATIC ISO-CENTERING
    15.
    发明申请
    INTERVENTIONAL X-RAY SYSTEM WITH AUTOMATIC ISO-CENTERING 审中-公开
    具有自动ISO-中心的传统X射线系统

    公开(公告)号：US20170035374A1

    公开(公告)日：2017-02-09

    申请号：US15039680

    申请日：2014-10-27

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： DIRK SCHÄFER ,  ROBERT JOHANNES FREDERIK HOMAN ,  MICHAEL GRASS

    IPC: A61B6/08 ,  A61B6/04 ,  A61B90/00 ,  A61B6/00

    CPC classification number: A61B6/08 ,  A61B5/0077 ,  A61B6/02 ,  A61B6/04 ,  A61B6/0407 ,  A61B6/0457 ,  A61B6/0492 ,  A61B6/4417 ,  A61B6/4435 ,  A61B6/4441 ,  A61B6/481 ,  A61B6/504 ,  A61B6/5247 ,  A61B90/361 ,  A61B2090/365 ,  A61B2090/371 ,  A61B2090/373 ,  A61B2090/376

    Abstract: An interventional X-ray system (10), comprises a processing unit (30), a table (20) for receiving a patient (44), an X-ray image acquisition device (12) having an X-ray source (16) and an X-ray detector (18) and at least one optical camera (46) adapted for acquiring optical images of a patient (44) situated on the table (20) and for providing image data to the processing unit (30). The processing unit (30) is adapted for segmenting an outline (64) of a patient from an existing three-dimensional model, for receiving acquired images from the at least one camera (46) for determining an optical outline (66) of the patient, for registering the optical outline (66) to the outline (64) obtained in the segmentation and for determining a translation vector (48) representing a required movement of the table for coinciding a center (42) of the anatomy of interest given in the three-dimensional model with the iso-center (38) of a rotational X-ray scan that will be performed. By this process, no X-ray exposure or injection of contrast agent is required.

    Abstract translation: 一种介入X射线系统（10），包括处理单元（30），用于接收患者（44）的台（20），具有X射线源（16）的X射线图像获取装置（12） 以及X射线检测器（18）和适于获取位于所述台（20）上的患者（44）的光学图像并用于向所述处理单元（30）提供图像数据的至少一个光学相机（46）。 处理单元（30）适于从现有的三维模型分割患者的轮廓（64），用于从所述至少一个照相机（46）接收获取的图像，以确定患者的光学轮廓（66） ，用于将光学轮廓（66）注册到在分割中获得的轮廓（64），并且用于确定表示所述表的所需运动的翻译矢量（48），用于使所述轮廓（64）与所述轮廓（64）的中心（42）重合， 具有将被执行的旋转X射线扫描的等中心（38）的三维模型。 通过该过程，不需要X射线曝光或注射造影剂。

    MEDICAL VIEWING SYSTEM WITH A VIEWING ANGLE OPTIMIZATION FUNCTION
    16.
    发明申请
    MEDICAL VIEWING SYSTEM WITH A VIEWING ANGLE OPTIMIZATION FUNCTION 审中-公开
    具有观察角度优化功能的医学观察系统

    公开(公告)号：US20160302754A1

    公开(公告)日：2016-10-20

    申请号：US15038677

    申请日：2014-11-05

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： JOHN ALLAN BRACKEN ,  NIELS NIJHOF ,  MICHAEL GRASS

    IPC: A61B6/00 ,  A61B8/00 ,  A61B6/12 ,  A61B8/08 ,  A61B8/12

    Abstract: An medical viewing system (10) adapted for acquiring a first set of X-ray fluoroscopy images of an ultrasonic probe (40) of an echocardiography imaging device at two different viewing angles, wherein a processing unit (30) of the system is adapted for registering live echocardiography and live X-ray images based on the first set of X-ray fluoroscopy images, localizing cusp nadirs positions of a set of characteristic features (42, 44, 46) in the X-ray subsequent frames, establishing a set of markers to match the localized positions of the cusp nadirs characteristic features (42, 44, 46), and determining an optimal viewing angle of the X-ray image acquisition device (12), in which the markers of the second set of markers lie on a single line and are equidistant from each other in the X-ray field of view. This enables a precise alignment of the X-ray imaging device, especially for TAVR procedures.

    Abstract translation: 一种适于获取超声心动图成像装置的超声波探头（40）的第二组X射线荧光透视图像的医疗观察系统（10），其具有两个不同的视角，其中，所述系统的处理单元（30）适于 基于第一组X射线透视图像记录实时超声心动图和活X射线图像，将一组特征特征（42,44,46）的尖点天底位置定位在X射线后续帧中，建立一组 标记以匹配尖点天点特征特征（42,44,46）的局部位置，以及确定X射线图像采集装置（12）的最佳视角，其中第二组标记的标记位于 在X射线视野中，单线并且彼此等距。 这使得能够精确地对准X射线成像装置，特别是对于TAVR程序。

    MEASUREMENT OF BLOOD FLOW PARAMETERS
    18.
    发明申请
    MEASUREMENT OF BLOOD FLOW PARAMETERS 有权

    公开(公告)号：US20250160779A1

    公开(公告)日：2025-05-22

    申请号：US18841752

    申请日：2023-02-22

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： ERAN LANGZAM ,  HANNES NICKISCH ,  CHRISTIAN HAASE ,  MICHAEL GRASS ,  HOLGER SCHMITT

    IPC: A61B6/50 ,  A61B6/00

    Abstract: A computer-implemented method of measuring a blood flow parameter in a vasculature, is provided. The method includes: analyzing spectral CT projection data to isolate from the spectral CT projection data, contrast agent projection data representing the flow of the injected contrast agent; sampling the contrast agent projection data at one or more regions of interest in the vasculature to provide temporal blood flow data at the one or more regions of interest; and calculating, from the temporal blood flow data, a value of one or more blood flow parameters at the one or more regions of interest.

    DEVICE AND METHOD FOR EVALUATING DARK FIELD IMAGES
    20.
    发明申请
    DEVICE AND METHOD FOR EVALUATING DARK FIELD IMAGES 有权

    公开(公告)号：US20220189024A1

    公开(公告)日：2022-06-16

    申请号：US17436095

    申请日：2020-03-12

    Applicant: KONINKLIJKE PHILIPS N.V.

    Inventor： THOMAS KOEHLER ,  MICHAEL GRASS

    IPC: G06T7/00 ,  A61B6/03 ,  A61B6/00 ,  A61B18/14 ,  G06T7/11 ,  G06T7/30

    Abstract: Device and Method for Evaluating Dark Field Images The present invention relates to the use of dark field X-ray images in an ablation treatment of a tumour. By acquiring dark field X-ray images displaying the region of interest targeted in the ablation treatment, information can be derived which allows taking a decision on terminating the ablation treatment. A set of dark field X-ray images is received (101), which is acquired at different time instants and comprises the region of interest. Dark field X-ray images of the set are compared (102), for example by determining difference images between the individual images. If during that comparison a change in the dark field X-ray images is detected over time in the region of interest, then a signal is generated (103) indicating a change has occurred. That signal may indicate that healthy tissue is being affected instead of the tumour and that consequently the ablation treatment should be ended.

Patent Agency Ranking