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公开(公告)号：US11071504B2
公开(公告)日：2021-07-27
申请号：US16305246
申请日：2017-06-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Dirk Schaefer
Abstract: The present invention relates to tomosynthesis. In order to further facilitate and improve the generation of three-dimensional image data, an X-ray imaging system (10) for calibration-free tomosynthesis is provided. The system comprises an imaging arrangement (12) with an X-ray detector unit (14) and an X-ray unit (16) comprising a plurality of X-ray sources (18). The system also comprises an image processing unit (20), an object receiving space (22), and a moving unit (24) for providing a relative movement between the imaging arrangement and an object of interest arranged at least partially in the object receiving space. The X-ray sources are provided in a known spatial relationship; the X-ray detector unit and the X-ray unit are also provided in a known spatial detector-sources-relationship. The moving unit provides a relative movement between the object of interest and the imaging arrangement in order to provide a plurality of system-to-object positions. The X-ray unit is configured to provide X-ray radiation to the object of interest from a plurality of different directions for each system-to-object position in order to provide a plurality of subsets of views with different viewing directions. The processing unit is configured to determine positions of the object in relation to the imaging arrangement based on the subsets of views, and to calculate a three-dimensional geometric position for each view of the subsets of views, and also to calculate a three-dimensional tomosynthesis reconstruction volume from the plurality of subsets of views.
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公开(公告)号：US10251594B2
公开(公告)日：2019-04-09
申请号：US15543466
申请日：2016-01-07
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Tobias Klinder , Eberhard Sebastian Hansis , Michael Grass , Dirk Schaefer , Hanno Heyke Homann , Christian Haase
Abstract: Minimally-invasive spinal inventions are often performed using fluoroscopic imaging methods, which can give a real-time impression of the location of a surgical instrument, at the expense of a small field of view. When operating on a spinal column, a small field of view can be a problem, because a medical professional is left with no reference vertebra in the fluoroscopy image, from which to identify a vertebra, which is the subject of the intervention. Identifying contiguous vertebrae is difficult because such contiguous vertebrae are similar in shape. However, characteristic features, which differentiate one vertebra from other vertebra, and which are visible in the fluoroscopic view, may be used to provide a reference.
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公开(公告)号：US12053334B2
公开(公告)日：2024-08-06
申请号：US17279269
申请日：2019-09-20
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Dirk Schaefer , Christian Haase , Wade Allen Bowe
CPC classification number: A61B90/37 , A61B6/00 , A61B2090/365 , A61B2090/3762
Abstract: The present invention relates to a device (1) for providing image data during an extraction procedure for extracting a lead from the body of a subject using an extraction device (7). The device comprises an input (2) for receiving live x-ray projection image data of the lead during the extraction procedure and for receiving three-dimensional image data as acquired before the extraction procedure. A processing unit (3) determines a position of the extraction device (7) in the three-dimensional image data by detecting the position in the live projection image data during the procedure and correlates this position in the live projection image data with the position in the three-dimensional image data. An output (4) generates an image of a cross-sectional view of the lead and/or its surrounding body structure at the determined position based on the three-dimensional image data.
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公开(公告)号：US11253217B2
公开(公告)日：2022-02-22
申请号：US15761056
申请日：2016-09-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Dirk Schaefer , Arjen Van Der Horst
Abstract: A three-dimensional morphological vessel model (20) can be obtained by assigning diameters (14,15) along the vessel derived from a two-dimensional morphological projection (10) at locations in the three-dimensional model defined by the temporal locations (21,22) of a trackable instrument (5). An apparatus (7), a system (1) and a method (100) for use of the system (1) in characterizing the vessel of a living being (2) by rendering a three-5 dimensional morphological vessel model (20) are presented.
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Patent Agency Ranking
公开(公告)号：US11071505B2
公开(公告)日：2021-07-27
申请号：US16099217
申请日：2017-05-08
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Dirk Schaefer , Michael Grass
Abstract: A system (SC) for controlling operation of a multi-focal-spot X-ray imager (IA). The system comprises a projection direction determiner (PDD) configured to determine a projection direction for an object (OB) to be imaged, based on a geometric structure of a model m(OB) for the object (OB). A selector (SX) of the system is configured to select, from the imager (IA)'s plurality of focal-spot-detector pairs (IPj) with different optical axes (OXj), at least one target pair whose optical axis corresponds to the determined projection direction.
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公开(公告)号：US10929974B2
公开(公告)日：2021-02-23
申请号：US16301477
申请日：2017-06-14
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Dirk Schaefer , Heiner Daerr , Thomas Koehler , Ewald Roessl
Abstract: Present invention relates to devices and methods for determining a calcium content by analyzing cardiac spectral CT data. CT projection data (9), obtainable by scanning a cardiac region of a subject using a spectral CT scanning unit, is modelled (12) by applying a material decomposition algorithm to the projection data to provide a calcium-specific component. Tomographic reconstructions (13) of the projection data, to provide a first 3D image (8), and of the calcium-specific component, to provide a second 3D image (6), are performed. The first 3D image (8) is segmented (14) to provide an image mask (5) corresponding to a cardiovascular structure of interest, a part of the second 3D image (6) is selected (15) based on the image mask (5), and a calcium content is calculated (16) in the cardiovascular structure of interest based on the selected part of the second 3D image (6).
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公开(公告)号：US10881365B2
公开(公告)日：2021-01-05
申请号：US16099285
申请日：2017-05-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Gereon Vogtmeier , Klaus Juergen Engel , Michael Grass , Bernd Menser , Heidrun Steinhauser , Alberto Fazzi , Herman Stegehuis , Dirk Schaefer
IPC: A61B6/00
Abstract: An interventional X-ray system is proposed, the system including a multi X-ray source unit positioned below a patient table. This ‘multiblock’ may comprise several x-ray sources with focal spot positions distributed along the x-y (table) plane. The x-ray sources are operable in a switching scheme in which certain x-ray sources may be activated in parallel and also sequential switching between such groups is intended. The switching may be carried out so that several images with different projection angles can be acquired in parallel. In other words, an optimal multi-beam X-ray exposure is suggested, wherein fast switching in one dimension and simultaneous exposure in the 2nd dimension is applied.
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公开(公告)号：US10405821B2
公开(公告)日：2019-09-10
申请号：US15316215
申请日：2015-06-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Eberhard Sebastian Hansis , Dirk Schaefer , Michael Grass
Abstract: The present invention relates to an imaging system (10) for a vertebral level, an identification method for a vertebral level, a computer program element for controlling such system and a computer readable medium having stored such computer program element. The imaging system (10) comprises a determination unit (11), a definition unit (12), an imaging unit (13), and a processing unit (14). The determination unit (11) determines a target vertebral level. The definition unit (12) defines an anatomical landmark of a spine. The imaging unit (13) provides a series of X-ray images along the spine based on the landmark. The processing unit (14) identifies the target vertebral level in at least one of the X-ray images. The processing unit (14) further stitches the X-ray images to a continuous panoramic image of the spine and identifies the target vertebral level in the panoramic image.
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公开(公告)号：US10052032B2
公开(公告)日：2018-08-21
申请号：US14784698
申请日：2014-04-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael Grass , Dirk Schaefer , Holger Schmitt
IPC: A61B6/03 , A61B5/02 , A61B5/0215 , A61B5/026 , A61B5/00 , A61B8/14 , A61B5/055 , A61B90/00 , A61B19/00 , A61B34/10
CPC classification number: A61B5/02007 , A61B5/0215 , A61B5/026 , A61B5/055 , A61B5/6851 , A61B5/742 , A61B6/032 , A61B6/037 , A61B8/14 , A61B2034/104 , A61B2034/105 , A61B2034/107 , A61B2090/364 , A61B2090/3782 , G16H50/50
Abstract: The present invention relates to stenosis therapy planning. A first volumetric data set is received by medical imaging of at least part of an artery comprising a stenosis. At least one two-dimensional image data (of the stenosis is received. A first arterial pressure drop is determined around the stenosis. A second volumetric data set is generated by registering the at least one two-dimensional image data with the first volumetric data set. A third volumetric data set is generated by simulating a geometry modification of the stenosis in the second volumetric data set and a second arterial pressure drop is estimated around the stenosis in the third volumetric data set.
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