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公开(公告)号：US20180286045A1
公开(公告)日：2018-10-04
申请号：US15570620
申请日：2016-04-26
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Eberhard Sebastian HANSIS , Holger SCHMITT , Michael GRASS , Dirk SCHAEFER , Hanno Heyke HOMANN , Tobias KLINDER , Christian HAASE
CPC classification number: G06T7/0016 , A61B5/004 , A61B5/02007 , A61B5/02158 , A61B5/026 , A61B5/0285 , A61B5/1128 , A61B5/6851 , A61B6/032 , A61B6/466 , A61B6/504 , G06T7/60 , G06T17/20 , G06T2207/10081 , G06T2207/30104 , G06T2210/41 , G16H30/20 , G16H30/40 , G16H50/50 , G16H50/70
Abstract: The present invention relates to a device (1) for fractional flow reserve determination, the device (1) comprising: a model source (10) configured to provide a first three-dimensional model (3DM1) of a portion of an imaged vascular vessel tree (VVT) surrounding a stenosed vessel segment (SVS) and configured to provide a second three-dimensional model (3DM2) of a pressure wire insertable into the vascular vessel tree (VVT); and a processor (20) configured to calculate a first blood flow (Q1) through the stenosed vessel segment (SVS) with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first and the second three-dimensional model and to calculate a second blood flow (Q2) through the stenosed vessel segment (SVS) without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first three-dimensional model (3DM1) and to determine a first fractional flow reserve value (FFR1) to be measured with the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the first blood flow (Q1) and to determine a second fractional flow reserve value (FFR2) to be measured without the pressure wire (PW) inserted into the vascular vessel tree (VVT) based on the second blood flow (Q1).
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12.发明申请公开(公告)号：US20220319071A1
公开(公告)日：2022-10-06
申请号：US17640809
申请日：2020-09-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael GRASS , Dirk SCHAEFER
Abstract: Image processing system (IPS), comprising an input interface (IN) for receiving an input image (IM) based on projection data (π) collected in a limited angle scan along different projection directions by an imaging apparatus (IA). A directional analyzer (DA) to compute a direction component for border regions in the input image. A directional discriminator (DD) is to discriminate border regions based on whether or not their direction component is along at least one of the projection directions.
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公开(公告)号：US20220167938A1
公开(公告)日：2022-06-02
申请号：US17676400
申请日：2022-02-21
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-dimensional morphological vessel model (20) are presented.
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Patent Agency Ranking
公开(公告)号：US20210401534A1
公开(公告)日：2021-12-30
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
IPC: A61B90/00
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：US20200315556A1
公开(公告)日：2020-10-08
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：US20190295249A1
公开(公告)日：2019-09-26
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：US20190059839A1
公开(公告)日：2019-02-28
申请号：US15770541
申请日：2016-10-27
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Dirk SCHAEFER , Cherif SAHYOUN , Eberhard Sebastian HANSIS , Christian HAASE , Tobias KLINDER , Michael GRASS
Abstract: The invention relates to an apparatus configured to display an aortic valve image and an indicator when the aortic valve is in its open-state and/or when the valve is in its closed-state. The indicator is supposed to be in an overlay to the image of the aortic valve, such that a physician can see on the same display image the information needed to advance a guide wire or catheter through the aortic valve of a heart. This may prevent damaging ensures not to damage the aortic valve. The physician receives the relevant information, when the aortic valve is in its open-state and thus being in a state to be passed by the catheter. The information, whether the aortic valve is in its open-state or in its closed-state, corresponds to the systolic phase and the distal phase of the heart, respectively. The information, when the heart is in its systolic phase and when it is in the diastolic phase may be extracted from an ECG measurement. From the detection of these cardiac phases, the closed-state of the valve and/or the open-state of the valve can be estimated using general knowledge about flood flow during the cardiac cycle.
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公开(公告)号：US20160066795A1
公开(公告)日：2016-03-10
申请号：US14784698
申请日：2014-04-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Michael GRASS , Dirk SCHAEFER , Holger SCHMITT
IPC: A61B5/02 , A61B5/026 , A61B5/00 , A61B5/0215
CPC classification number: A61B5/02007 , A61B5/0215 , A61B5/026 , A61B5/055 , A61B5/6851 , A61B5/742 , A61B6/032 , A61B6/037 , A61B8/14 , A61B2019/504 , A61B2019/505 , A61B2019/507 , A61B2019/5289 , A61B2034/105 , 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.
Abstract translation: 本发明涉及狭窄治疗计划。 通过包括狭窄的动脉的至少一部分的医学成像来接收第一容积数据集。 至少一个二维图像数据（狭窄点被接收），围绕狭窄确定第一动脉压降，通过将至少一个二维图像数据与第一体积数据集进行对比来生成第二体积数据集 通过模拟第二体积数据集中的狭窄的几何修改来生成第三体积数据集，并且在第三体积数据集中围绕狭窄估计第二动脉压降。
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