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公开(公告)号：US11721439B2
公开(公告)日：2023-08-08
申请号：US16978799
申请日：2019-03-04
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Tobias Wissel , Hannes Nickisch , Michael Grass
CPC classification number: G16H50/20 , G06T7/0012 , G16H30/40 , G16H50/30 , G06T2207/10101 , G06T2207/20081 , G06T2207/30101
Abstract: A system (SY) for determining a relative importance of each of a plurality of image features (Fn) of a vascular medical image impacting an overall diagnostic metric computed for the image from an automatically-generated diagnostic rule. A medical kin image database (MIDB) includes a plurality of vascular medical images (M1 . . . k). A rule generating unit (RGU) analyzes the plurality of C vascular medical images and automatically generates at least one diagnostic rule corresponding to a common diagnosis of a subset of the plurality of vascular medical images based on a plurality of image features common to the subset of vascular medical images. An image providing unit (IPU) provides a current vascular medical image (CVMI) including the plurality of image features. A diagnostic metric computation unit (DMCU) computes an overall diagnostic metric for the current vascular medical image by applying the at least one automatically-generated diagnostic rule to the current vascular medical image. A decision propagation unit (DPU) identifies, in the current vascular medical image, the relative importance of each of the plurality of image features on the computed overall diagnostic metric.
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公开(公告)号：US11426240B2
公开(公告)日：2022-08-30
申请号：US16468303
申请日：2017-12-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Tobias Wissel , Hernán Guillermo Morales Varela , Michael Grass
IPC: A61B34/10 , G06T7/11 , G06T7/73 , G16H50/50 , G16H30/20 , G16H50/30 , G16H30/40 , G06F30/23 , G06T7/00 , G16H50/20
Abstract: A stress prediction device for predicting mechanical stress exerted to a deformable object due contact between the object and an external device that is to be inserted into the object at an intended insertion position comprises a segmentation unit configured to access generic model data representing a generic reference object that comprises predefined secondary landmark features at predefined landmark positions, which are not identifiable using a predefined imaging technique, and pre-insertion object image data acquired using the imaging technique. It provides segmented object model data which comprises associated mapped landmark position data indicative of mapped landmark positions of the secondary landmark features. A stress determination unit determines and provides predictive stress information indicative of mechanical stress exerted to at least one of the secondary landmark features at the associated mapped landmark position due to mechanical contact between the object and the external device.
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公开(公告)号：US11419571B2
公开(公告)日：2022-08-23
申请号：US17047103
申请日：2019-04-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christian Haase , Michael Grass , Dirk Schafer
Abstract: Mechanical image acquisition systems (such as medical C-arms) frequently accumulate geometrical errors which must be calibrated out using a calibration phantom. A more frequent regime of system calibration implies a less frequent use of the C-arm for clinical applications. The present application proposes to identify common biases between the acquired projection frame sequences from the same mechanical image acquisition system in first and second acquisitions, and to compare this to expected calibration data of the mechanical image acquisition system to generate frame deviation measures. If a resemblance between the first and second sequences of frame deviation measures is obtained, one or more calibration actions are performed (such as alerting the user that calibration should be provided, and/or automatically correcting for the geometry deviation).
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公开(公告)号：US11224394B2
公开(公告)日：2022-01-18
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：US11116940B2
公开(公告)日：2021-09-14
申请号：US14432228
申请日：2013-10-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Daniel Simon Anna Ruijters , Sander Hans Denissen , Michael Grass , Erik Martinus Hubertus Petrus Van Dijk , Dirk Dijkkamp , Maikel Hendriks , Erik Rene Kieft , Marco Verstege
Abstract: The invention addresses the problem of correctly positioning a catheter and reducing radiation doses. It relates to an X-ray imaging system (1) for a robotic catheter, comprising said catheter (3), and a processing unit (5) for receiving X-ray images of a patient environment (15). By being adapted to receive one or more auxiliary information items and using said information for determining the catheter position, the processing unit does not entirely have to rely on a large number of scanned image data, thus helping to reduce radiation while correctly delivering the catheter position as a function of as few as a single image, preferably 2D, and said one auxiliary information items. Further, said processing unit allows for at least one of rendering an image and provide said image to a visualization device (21), and providing feedback, e.g. steering commands, to said robotic catheter.
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Patent Agency Ranking
公开(公告)号：US11055848B2
公开(公告)日：2021-07-06
申请号：US14396407
申请日：2013-05-10
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Holger Schmitt , Peter Forthmann , Michael Grass
Abstract: A method includes determining at least one characteristic about a stenosis in a vessel of a patient from image data of the stenosis, mapping the characteristic to a predefined stenosis characteristic to fractional flow reserve value look up table, identifying the fractional flow reserve value in the look up table corresponding to the characteristic, and visually presenting the image data and the identified fractional flow reserve value. A system includes memory storing a pre-defined stenosis characteristic to fractional flow reserve value look up table, a metric determiner (118) that maps at least one characteristic about a stenosis in a vessel of a patient, which is determined from image data of the stenosis, to a characteristic in the look up table and identifies a fractional flow reserve value corresponding to the characteristic, and a display (116) that visually presents the image data and the identified fractional flow reserve value.
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公开(公告)号：US11007014B2
公开(公告)日：2021-05-18
申请号：US16062636
申请日：2016-12-16
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Robert Johannes Frederik Homan , Ronaldus Frederik Johannes Holthuizen , Michael Grass , Harold Agnes Wilhelmus Schmeitz , Bernardus Hendrikus Wilhelmus Hendriks , Thirukumaran Thangaraj Kanagasabapathi
Abstract: The present invention relates to medical instrument tracking. In order to facilitate tracking a medical instrument, a system (100) is provided for tracking a medical instrument. The system comprises an instrument marker (14), a tracking arrangement (16), and a processing unit (18). The instrument marker is attached to the medical instrument on a marker position (20). The tracking system is configured to detect line segments (22) in the 5 field of interest and to detect the attached instrument marker. The processing unit is configured to identify a line segment (24) on which the attached instrument marker is detected as the medical instrument, and to determine an offset (26) between a position of a medical instrument tip (28) and the marker (14) by touching a reference marker (34) on the subject with the medical instrument (10).
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公开(公告)号：US10762647B2
公开(公告)日：2020-09-01
申请号：US16099484
申请日：2017-05-19
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Christian Buerger , Michael Grass , Drazenko Babic
Abstract: A system and method of assisting a treatment procedure is provided, the method comprising the steps of determining a 3-D intervention vector in relation to an inner body structure of a body of interest based on a 3-D x-ray image, determining a 3-D position of an entry point on an outer surface of the body of interest based on the intervention vector, comparing the position and/or orientation of the inner body structure in the 3-D x-ray image with the position and/or orientation of the inner body structure in an additional 2-D x-ray image being generated transverse to the intervention vector, correcting the 3-D position of the entry point on the outer surface of the body of interest based on a deviation detected in the comparing step.
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公开(公告)号：US10657621B2
公开(公告)日：2020-05-19
申请号：US15104546
申请日：2014-12-09
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Kevin Martin Brown , Michael Grass , Manindranath Vembar
Abstract: A method includes manipulating segmented structure of interest, which is segmented from first reconstructed image data at a reference motion phase of interest, that is registered to second reconstructed image data at one or more other motion phases. The method further includes updating initial motion vector fields corresponding to the registration of the segmented structure of interest to the second reconstructed image data based on the manipulation. The method further includes reconstructing the projection data with a motion compensated reconstruction algorithm employing the updated motion vector fields.
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公开(公告)号：US10064586B2
公开(公告)日：2018-09-04
申请号：US15104003
申请日：2014-12-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Thomas Koehler , Michael Grass
IPC: G01N23/00 , A61B6/03 , G01N23/046 , G06T11/00 , A61B6/00
Abstract: The invention relates to a projection data acquisition apparatus (14) for acquiring projection data for being used for reconstructing a computed tomography image. In acquisition intervals projection data are acquired only at certain acquisition rotational positions of a radiation source (2) relative to an object, wherein an acquisition rotational position of a current acquisition interval divides a largest non-acquisition angular region covering rotational positions, at which projection data have not already been acquired, into two smaller non-acquisition angular regions. Because of this acquisition of the projection data, after each acquisition interval the acquisition rotational positions, at which projection data have been acquired already, are relatively homogeneously distributed. This allows for an improved image quality of a computed tomography image which is reconstructed based on the acquired projection data.
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