Patents by Inventor Anton Nekovar
Anton Nekovar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11969222Abstract: A method for actuating an X-ray device during robot-assisted navigation of at least two objects introduced into a body, such as a hollow organ, of a patient by at least one robotic system, includes providing a first selection criterion for selecting one of the objects, and providing a second selection criterion for selecting one of the objects. One of the at least two objects is selected based on the first selection criterion and the second selection criterion, and recording parameters of the X-ray device are automatically set, such that the selected object in an X-ray image to be recorded is highlighted compared to the at least one other object. The selected object may be highlighted with respect to image quality, image flavor, positioning on the X-ray image, and/or a collimator setting of a collimator of the X-ray device. An X-ray image is recorded with the set recording parameters.Type: GrantFiled: October 13, 2021Date of Patent: April 30, 2024Assignee: Siemens Healthcare GmbHInventors: Christian Kaethner, Andreas Meyer, Anton Nekovar, Markus Kowarschik
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Patent number: 11599191Abstract: According to a computer-implemented method for the automatic localization of a structure, an individual image which maps an object with the structure is displayed on a display surface. A gaze movement of a user is captured by a gaze capture system and, on the basis thereof, a gaze capture signal is generated. By a computer unit, dependent upon the gaze capture signal, at least one image point of the individual image is identified, which at least partially maps the structure.Type: GrantFiled: July 28, 2020Date of Patent: March 7, 2023Assignee: Siemens Healthcare GmbHInventors: Martin Berger, Anton Nekovar
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Patent number: 11564643Abstract: In order to reduce a radiation dose delivered to an object or an observer, a facility for monitoring handling of the object has an optical unit configured to direct ionizing radiation onto the object and also a filter element in order to attenuate a part of the ionizing radiation. An imaging unit may detect portions of the ionizing radiation passing through the object in order to create an image of the object. A view acquisition system may acquire a viewing movement, and a control unit is configured, during a first operating mode, to control a position of the filter element as a function of the viewing movement. The control unit is configured to identify a predefined sequence of viewing movements and, as a function thereof, to switch into a second operating mode. The position of the filter element is controlled during the second operating mode as a function of an image analysis.Type: GrantFiled: May 6, 2020Date of Patent: January 31, 2023Assignee: Siemens Healthcare GmbHInventors: Anton Nekovar, Mohammad Sharifi
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Publication number: 20220117671Abstract: A method for actuating an X-ray device during robot-assisted navigation of at least two objects introduced into a body, such as a hollow organ, of a patient by at least one robotic system, includes providing a first selection criterion for selecting one of the objects, and providing a second selection criterion for selecting one of the objects. One of the at least two objects is selected based on the first selection criterion and the second selection criterion, and recording parameters of the X-ray device are automatically set, such that the selected object in an X-ray image to be recorded is highlighted compared to the at least one other object. The selected object may be highlighted with respect to image quality, image flavor, positioning on the X-ray image, and/or a collimator setting of a collimator of the X-ray device. An X-ray image is recorded with the set recording parameters.Type: ApplicationFiled: October 13, 2021Publication date: April 21, 2022Inventors: Christian Kaethner, Andreas Meyer, Anton Nekovar, Markus Kowarschik
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Publication number: 20210034148Abstract: According to a computer-implemented method for the automatic localization of a structure, an individual image which maps an object with the structure is displayed on a display surface. A gaze movement of a user is captured by a gaze capture system and, on the basis thereof, a gaze capture signal is generated. By a computer unit, dependent upon the gaze capture signal, at least one image point of the individual image is identified, which at least partially maps the structure.Type: ApplicationFiled: July 28, 2020Publication date: February 4, 2021Inventors: Martin Berger, Anton Nekovar
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Publication number: 20200359976Abstract: In order to reduce a radiation dose delivered to an object or an observer, a facility for monitoring handling of the object has an optical unit configured to direct ionizing radiation onto the object and also a filter element in order to attenuate a part of the ionizing radiation. An imaging unit may detect portions of the ionizing radiation passing through the object in order to create an image of the object. A view acquisition system may acquire a viewing movement, and a control unit is configured, during a first operating mode, to control a position of the filter element as a function of the viewing movement. The control unit is configured to identify a predefined sequence of viewing movements and, as a function thereof, to switch into a second operating mode. The position of the filter element is controlled during the second operating mode as a function of an image analysis.Type: ApplicationFiled: May 6, 2020Publication date: November 19, 2020Inventors: Anton Nekovar, Mohammad Sharifi
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Patent number: 10285662Abstract: The embodiments relate to a method for adapting at least one radiation parameter of a beam source in an x-ray device, wherein the beam source is activated according to the radiation parameter for providing x-radiation, wherein, as long as the filter element is not being moved, the radiation parameter is specified based on image data acquired in a transillumination region by the beam detector, wherein at least one interim image is recorded at least partially within a movement interval during which the filter element is moved, after which the radiation parameter is specified independently of the image data of the interim image or after which exclusively image data of the interim image that are acquired in an overlapping region of the beam detector that lies within the transillumination region during the entire recording interval are taken into account in the determination of the radiation parameter.Type: GrantFiled: November 2, 2016Date of Patent: May 14, 2019Assignee: Siemens Healthcare GmbHInventors: Anton Nekovar, Tamás Ujvári
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Patent number: 10268915Abstract: A method for real-time collimation and ROI-filter positioning in X-ray imaging in interventional procedures includes acquiring an image of a region-of-interest (ROI) at a beginning of a medical intervention procedure on a subject, classifying the image based on low-level features in the image to determine a type of procedure being performed, determining a list of landmarks in the image from the type of procedure being performed, and loading a pre-trained landmark model for each landmark in the list of landmarks, where landmarks include anatomical structures of the subject and medical devices being used in the medical intervention procedure, and computing collimator settings of an X-ray imaging device from ROI filter margins and bounding boxes of the landmarks calculated using the landmark models.Type: GrantFiled: June 9, 2015Date of Patent: April 23, 2019Assignee: Siemens Healthcare GmbHInventors: Wen Wu, Terrence Chen, Anton Nekovar, Martin Ostermeier, Dorin Comaniciu
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Method for adapting the brightness of an X-ray image, X-ray device, computer program and data medium
Patent number: 10217215Abstract: A method for adapting the brightness of an X-ray image is provided. The X-ray image is recorded using a filter attenuating X-ray radiation used for recording the X-ray image differently in at least two spatial filter regions. The method includes determining image regions mapping the filter regions from filter parameters and recording geometry parameters describing the filter regions from at least one evaluation line running perpendicular to a boundary between image regions. The method also includes determining, for each evaluation line, a correction value describing a difference in brightness between the image regions from an image value profile along the evaluation line in an evaluation area containing the boundary, determining at least one correction factor from the at least one correction value, and adapting the brightness between the at least two image regions by scaling the image values with the correction factor.Type: GrantFiled: December 2, 2016Date of Patent: February 26, 2019Assignee: Siemens Healthcare GmbHInventors: Markus Kowarschik, Andreas Maier, Anton Nekovar, Reinhard Stadler -
Publication number: 20180129896Abstract: A method for real-time collimation and ROI-filter positioning in X-ray imaging in interventional procedures includes acquiring an image of a region-of-interest (ROI) at a beginning of a medical intervention procedure on a subject, classifying the image based on low-level features in the image to determine a type of procedure being performed, determining a list of landmarks in the image from the type of procedure being performed, and loading a pre-trained landmark model for each landmark in the list of landmarks, where landmarks include anatomical structures of the subject and medical devices being used in the medical intervention procedure, and computing collimator settings of an X-ray imaging device from ROI filter margins and bounding boxes of the landmarks calculated using the landmark models.Type: ApplicationFiled: June 9, 2015Publication date: May 10, 2018Inventors: Wen Wu, Terrence Chen, Anton Nekovar, Martin Ostermeier, Dorin Comaniciu
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METHOD FOR ADAPTING THE BRIGHTNESS OF AN X-RAY IMAGE, X-RAY DEVICE, COMPUTER PROGRAM AND DATA MEDIUM
Publication number: 20170161895Abstract: A method for adapting the brightness of an X-ray image is provided. The X-ray image is recorded using a filter attenuating X-ray radiation used for recording the X-ray image differently in at least two spatial filter regions. The method includes determining image regions mapping the filter regions from filter parameters and recording geometry parameters describing the filter regions from at least one evaluation line running perpendicular to a boundary between image regions. The method also includes determining, for each evaluation line, a correction value describing a difference in brightness between the image regions from an image value profile along the evaluation line in an evaluation area containing the boundary, determining at least one correction factor from the at least one correction value, and adapting the brightness between the at least two image regions by scaling the image values with the correction factor.Type: ApplicationFiled: December 2, 2016Publication date: June 8, 2017Inventors: Markus Kowarschik, Andreas Maier, Anton Nekovar, Reinhard Stadler -
Publication number: 20170119337Abstract: The embodiments relate to a method for adapting at least one radiation parameter of a beam source in an x-ray device, wherein the beam source is activated according to the radiation parameter for providing x-radiation, wherein, as long as the filter element is not being moved, the radiation parameter is specified based on image data acquired in a transillumination region by the beam detector, wherein at least one interim image is recorded at least partially within a movement interval during which the filter element is moved, after which the radiation parameter is specified independently of the image data of the interim image or after which exclusively image data of the interim image that are acquired in an overlapping region of the beam detector that lies within the transillumination region during the entire recording interval are taken into account in the determination of the radiation parameter.Type: ApplicationFiled: November 2, 2016Publication date: May 4, 2017Inventors: Anton Nekovar, Tamás Ujvári
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Patent number: 8663300Abstract: A method for positioning a stent able to be deployed to support a vessel in a blood vessel, especially in the cardiology, with the stent after its provisional placement in a not yet deployed state in an area intended for the support of the vessel, being at least partly automatically deployed as a function of at least one triggering signal for final positioning in the blood vessel.Type: GrantFiled: March 11, 2008Date of Patent: March 4, 2014Assignee: Siemens AktiengesellschaftInventors: Estelle Camus, Oliver Meissner, Andreas Meyer, Anton Nekovar, Martin Ostermeier, Thomas Redel
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Publication number: 20100114289Abstract: A method for positioning a stent able to be deployed to support a vessel in a blood vessel, especially in the cardiology, with the stent after its provisional placement in a not yet deployed state in an area intended for the support of the vessel, being at least partly automatically deployed as a function of at least one triggering signal for final positioning in the blood vessel.Type: ApplicationFiled: March 11, 2008Publication date: May 6, 2010Inventors: Estelle Camus, Oliver Meissner, Andreas Meyer, Anton Nekovar, Martin Ostermeier, Thomas Redel
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Patent number: 7616983Abstract: A device for guiding a magnetic element has magnet holders that can be pivoted about vertical axes from an operating position to a rest position, such that a patient to be examined can be examined using imaging devices, having X-ray radiation sources and X-ray detectors respectively attached to C-arms.Type: GrantFiled: September 20, 2005Date of Patent: November 10, 2009Assignee: Siemens AktiengesellschaftInventors: Anton Nekovar, Hans-Joachim Reich
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Patent number: 7599472Abstract: In order to reduce the influence of magnetic interference fields on the position of an x-ray focus of an x-ray tube, the deviation of a current focus position from a target focus position or of a measurement value proportional to the deviation is determined, the focus position by reducing the deviation of the current focus position from the target focus position, or the measurement value proportional to the deviation, on the basis of the determined deviation or the determined measurement value proportional to the deviation. The deviation of the current focus position from the target focus position or the measurement value proportional to the deviation is regulated to a value of essentially zero via repeated determination and correction.Type: GrantFiled: September 28, 2007Date of Patent: October 6, 2009Assignee: Siemens AktiengesellschaftInventors: Jens Bernhardt, Andreas Meyer, Anton Nekovar
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Patent number: 7580503Abstract: The invention relates to a diagnostics device and to a method for the operation thereof comprising an X-ray system for producing X-ray images, the system comprising an X-ray device and an image system for the X-ray device, and a system for locating objects, wherein adjusting means for changing the frequency of at least one of the two systems are provided, by way of which the two systems can be coordinated with one another such that interference within successive X-ray images is virtually static, and the image system comprises a correcting device which is constructed such that the static interference is eliminated. Diagnostics devices of this type are used in various medical procedures, for example in PCI (Percutaneous Coronary Intervention) and Cardiac EP (electrophysiology) interventions.Type: GrantFiled: March 23, 2006Date of Patent: August 25, 2009Assignee: Siemens AktiengesellschaftInventors: Anton Nekovar, Bernhard Sandkamp
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Publication number: 20080125649Abstract: A medical treatment system is described having an imaging device and a patient examination table. At least one of the imaging device or the patient table has a motorized or hydraulic mechanism for moving the imaging device and the patient examination table relative to each other. A processor tracks the position of a catheter or a bolus of contrast enhancing material so that the catheter or bolus is maintained within the field of view of the imaging system, or within the displayed image where the images have been previously obtained. The position of the catheter may be determined by image analysis or magnetic or acoustic means, and the position of the bolus may be obtained by image analysis.Type: ApplicationFiled: September 18, 2006Publication date: May 29, 2008Inventors: Andreas Meyer, Winfried Lurz, Anton Nekovar
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Publication number: 20080080664Abstract: In order to reduce the influence of magnetic interference fields on the position of an x-ray focus of an x-ray tube, the deviation of a current focus position from a target focus position or of a measurement value proportional to the deviation is determined, the focus position by reducing the deviation of the current focus position from the target focus position, or the measurement value proportional to the deviation, on the basis of the determined deviation or the determined measurement value proportional to the deviation. The deviation of the current focus position from the target focus position or the measurement value proportional to the deviation is regulated to a value of essentially zero via repeated determination and correction.Type: ApplicationFiled: September 28, 2007Publication date: April 3, 2008Inventors: Jens Bernhardt, Andreas Meyer, Anton Nekovar
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Publication number: 20080025474Abstract: The invention relates to a method for operating a diagnostic apparatus with an x-ray system for generating x-ray images, which has an x-ray device and an image system for the x-ray device, with a system for determining the position of objects, for example a measurement catheter, and a control facility for at least the x-ray system, whereby after an x-ray pulse a first read-out containing useful information is saved as an x-ray image, immediately afterwards a second read-out not containing useful information is saved as an interference image, and the x-ray image is corrected for the purpose of minimizing interference. Such diagnostic apparatuses are used in various medical procedures, for example in PCI (Percutaneous coronary intervention) and cardiac EP (electrophysiology) interventions.Type: ApplicationFiled: July 20, 2007Publication date: January 31, 2008Inventors: Anton Nekovar, Bernhard Sandkamp