Patents by Inventor Anja Fritzler
Anja Fritzler 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: 11955307Abstract: At least one example embodiment provides an electron emitter apparatus having a first ring of field-effect emitter needles, the field-effect emitter needles of the first ring forming a first emitter surface on an inner side of the first ring; and a second ring of field-effect emitter needles, the field-effect emitter needles of the second ring forming a second emitter surface on an inner side of the second ring, wherein the first ring and the second ring are arranged in such that the first emitter surface and the second emitter surface form a substantially contiguous three-dimensional overall emitter surface, the substantially contiguous three-dimensional overall emitter surface defining a hollow channel along a longitudinal axis of the electron emitter apparatus.Type: GrantFiled: May 2, 2022Date of Patent: April 9, 2024Assignee: Siemens Healthineers AGInventors: Christoph Jud, Peter Hackenschmied, Joerg Freudenberger, Peter Geithner, Anja Fritzler
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Patent number: 11901152Abstract: Some example embodiments provide an x-ray tube for a stereoscopic imaging having an evacuated x-ray tube housing; an electron emitter apparatus in the x-ray tube housing, the electron emitter apparatus including a first field effect emitter with a first emitter surface and a second field effect emitter with a second emitter surface, at least one of the first emitter surface or the second emitter surface being segmented such that a portion of the at least one of the first emitter surface or the second emitter surface can be set relative to the respective overall emitter surface by selectively switching emitter segments of the at least one of the first emitter surface or the second emitter surface; an anode unit in the x-ray tube housing, the anode unit configured to generate x-ray radiation for the stereoscopic imaging as a function of electrons striking two focal points; and a control unit.Type: GrantFiled: July 27, 2022Date of Patent: February 13, 2024Assignee: SIEMENS HEALTHCARE GMBHInventors: Peter Geithner, Jörg Freudenberger, Christoph Jud, Anja Fritzler, Josef Deuringer, Peter Hackenschmied
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Publication number: 20230200754Abstract: A method for controlling an FFS X-ray system comprises: simulating a beam geometry of the X-ray beam at a specified FFS deflection onto the detector during recording of a projection image; determining whether cross-radiation is present in a region around the detector by the simulated beam geometry of the X-ray beam; generating FFS control data for the recording of the projection image, wherein the FFS control data either (i) causes FFS deflection that is reduced relative to the specified FFS deflection for the recording of the projection image in the event of the cross-radiation being present for the recording of the projection image or (ii) causes the specified FFS deflection otherwise; repeating the simulating, the determining and the generating FFS control data for at least one further recording of a projection image; and generating a control data set including the FFS control data, for controlling an FFS X-ray system.Type: ApplicationFiled: December 27, 2022Publication date: June 29, 2023Applicant: Siemens Healthcare GmbHInventors: Marcus RADICKE, Ralf NANKE, Steffen KAPPLER, Thomas WEBER, Ferdinand LUECK, Ludwig RITSCHL, Anja FRITZLER
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Patent number: 11670476Abstract: An x-ray anode for an x-ray emitter has a structured surface provided for impingement with electrons. According to an embodiment of the invention, the structured surface has a surface structure which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension and periodicity.Type: GrantFiled: November 22, 2021Date of Patent: June 6, 2023Assignee: SIEMENS HEALTHCARE GMBHInventors: Anja Fritzler, Peter Geithner, Petra Maurer, Thomas Weber, Brigitte Streller
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Publication number: 20230098560Abstract: One or more example embodiments relates to a method for calibrating an X-ray emitter having a cathode, an anode and a coil, wherein the coil is connected to a conductor arrangement through which an electrical function current is guided through the coil. The method comprises measuring an induction current that is induced in the coil at the conductor arrangement of the coil; calculating a compensation current for an effecting coil of the X-ray emitter based on the measured induction current, the effecting coil configured to change an electron beam between the cathode and the anode, wherein the compensation current is calculated such that a magnetic field that induces the induction current during the measuring is compensated using a magnetic field that is produced by the compensation current in the effecting coil; and applying the compensation current in the effecting coil.Type: ApplicationFiled: September 26, 2022Publication date: March 30, 2023Applicant: Siemens Healthcare GmbHInventors: Thomas WEBER, Anja FRITZLER, Steffen KAPPLER, Ralf NANKE, Ludwig RITSCHL, Marcus RADICKE, Ferdinand LUECK
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Publication number: 20230031968Abstract: Some example embodiments provide an x-ray tube for a stereoscopic imaging having an evacuated x-ray tube housing; an electron emitter apparatus in the x-ray tube housing, the electron emitter apparatus including a first field effect emitter with a first emitter surface and a second field effect emitter with a second emitter surface, at least one of the first emitter surface or the second emitter surface being segmented such that a portion of the at least one of the first emitter surface or the second emitter surface can be set relative to the respective overall emitter surface by selectively switching emitter segments of the at least one of the first emitter surface or the second emitter surface; an anode unit in the x-ray tube housing, the anode unit configured to generate x-ray radiation for the stereoscopic imaging as a function of electrons striking two focal points; and a control unit.Type: ApplicationFiled: July 27, 2022Publication date: February 2, 2023Applicant: Siemens Healthcare GmbHInventors: Peter GEITHNER, Joerg FREUDENBERGER, Christoph JUD, Anja FRITZLER, Josef DEURINGER, Peter HACKENSCHMIED
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Patent number: 11557452Abstract: An x-ray emitter includes an x-ray tube and an x-ray emitter housing. In an embodiment, the x-ray tube includes an evacuated x-ray tube housing, a cathode for emitting electrons and an anode for generating x-rays as a function of the electrons. Further, in an embodiment, the x-ray emitter housing includes the x-ray tube and outside of the x-ray tube, a gaseous cooling medium. In an embodiment, the x-ray emitter further includes a compressor for a forced convection of the gaseous cooling medium for cooling the x-ray tube, a pressure ratio between the intake side and pressure side of the compressor being greater than 1.3.Type: GrantFiled: September 8, 2020Date of Patent: January 17, 2023Assignee: Siemens Healthcare GmbHInventors: Lukas Havla, Anja Fritzler, Peter Roehrer
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Publication number: 20220359148Abstract: At least one example embodiment provides an electron emitter apparatus having a first ring of field-effect emitter needles, the field-effect emitter needles of the first ring forming a first emitter surface on an inner side of the first ring; and a second ring of field-effect emitter needles, the field-effect emitter needles of the second ring forming a second emitter surface on an inner side of the second ring, wherein the first ring and the second ring are arranged in such that the first emitter surface and the second emitter surface form a substantially contiguous three-dimensional overall emitter surface, the substantially contiguous three-dimensional overall emitter surface defining a hollow channel along a longitudinal axis of the electron emitter apparatus.Type: ApplicationFiled: May 2, 2022Publication date: November 10, 2022Applicant: Siemens Healthcare GmbHInventors: Christoph JUD, Peter HACKENSCHMIED, Joerg FREUDENBERGER, Peter GEITHNER, Anja FRITZLER
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Patent number: 11457521Abstract: A method is for spatially influencing a focal spot of an X-ray source that generates X-ray radiation, to an associated X-ray source, to an associated system and to an associated computer program product. The method according to at least one embodiment includes: producing a focal spot on an anode by way of an electron emitter including a plurality of emitter segments, individually controllable to emit electrons; determining at least one actual value of a spatial extent and/or of a position of the produced focal spot; comparing the at least one actual value with a specified reference value of the focal spot; and controlling the emitter segments based upon the comparison of the at least one actual value and the reference value such that the at least one actual value converges toward the reference value, thereby spatially influencing the focal spot of the X-ray source that generates X-ray radiation.Type: GrantFiled: May 26, 2021Date of Patent: September 27, 2022Assignee: SIEMENS HEALTHCARE GMBHInventor: Anja Fritzler
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Patent number: 11443913Abstract: An X-ray radiator and an X-ray assembly are disclosed. The X-ray radiator according to an embodiment has an evacuated X-ray tube housing, mounted to be rotatable about a rotation axis, the X-ray tube housing including an anode and an electron source. The anode is arranged within the X-ray tube housing non-rotatably relative to the X-ray tube housing and is configured to generate X-ray radiation via electrons impacting upon a focal spot of the anode, the electron source being mounted substantially stationary within the X-ray tube housing relative to the rotation axis. The electron source has a main emitter and at least one subsidiary emitter for emitting electrons. The electron emission of the main emitter and/or of the at least one subsidiary emitter is controllable such that a spatial movement of the focal spot due to a movement of the electron source is reduced.Type: GrantFiled: May 26, 2021Date of Patent: September 13, 2022Assignee: Siemens Healthcare GmbHInventor: Anja Fritzler
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Patent number: 11361929Abstract: An x-ray tube includes an electron emitter to emit an electron beam; and a multilayer anode including a first anode layer facing the electron beam and a second anode layer facing away from the electron beam. The first anode layer includes a first anode material to generate a braking radiation via the electron beam and the second anode layer includes a second anode material to generate a further x-ray radiation via the braking radiation. The further x-ray radiation is relatively more monochromatic than the braking radiation and wherein the first anode layer and the second anode layer adjoin in a planar manner.Type: GrantFiled: June 3, 2020Date of Patent: June 14, 2022Assignee: Siemens Healthcare GmbHInventors: Anja Fritzler, Joerg Freudenberger, Marcus Radicke, Peter Geithner
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Publication number: 20220084775Abstract: An x-ray anode for an x-ray emitter has a structured surface provided for impingement with electrons. According to an embodiment of the invention, the structured surface has a surface structure which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension and periodicity.Type: ApplicationFiled: November 22, 2021Publication date: March 17, 2022Applicant: Siemens Healthcare GmbHInventors: Anja FRITZLER, Peter GEITHNER, Petra MAURER, Thomas WEBER, Brigitte STRELLER
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Patent number: 11227739Abstract: An x-ray anode for an x-ray emitter has a structured surface provided for impingement with electrons. According to an embodiment of the invention, the structured surface has a surface structure which alternates periodically at least in sections and which varies in the micrometer range with respect to its depth extension and periodicity.Type: GrantFiled: September 18, 2019Date of Patent: January 18, 2022Assignee: SIEMENS HEALTHCARE GMBHInventors: Anja Fritzler, Peter Geithner, Petra Maurer, Thomas Weber, Brigitte Streller
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Patent number: 11226298Abstract: An x-ray imaging system includes an x-ray source configured to emit x-ray radiation towards a sample, and a primary detector configured to detect x-ray radiation from the x-ray source passing through the sample. The x-ray imaging system also includes a secondary detector configured to detect x-ray radiation from the x-ray source scattered in the sample, and imaging optics configured to guide x-ray radiation scattered in the sample onto the secondary detector.Type: GrantFiled: September 27, 2019Date of Patent: January 18, 2022Assignee: Siemens Healthcare GmbHInventors: Steffen Kappler, Marcus Radicke, Jörg Freudenberger, Anja Fritzler, Peter Geithner, Peter Hackenschmied, Thomas Weber
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Publication number: 20210385930Abstract: A method is for spatially influencing a focal spot of an X-ray source that generates X-ray radiation, to an associated X-ray source, to an associated system and to an associated computer program product. The method according to at least one embodiment includes: producing a focal spot on an anode by way of an electron emitter including a plurality of emitter segments, individually controllable to emit electrons; determining at least one actual value of a spatial extent and/or of a position of the produced focal spot; comparing the at least one actual value with a specified reference value of the focal spot; and controlling the emitter segments based upon the comparison of the at least one actual value and the reference value such that the at least one actual value converges toward the reference value, thereby spatially influencing the focal spot of the X-ray source that generates X-ray radiation.Type: ApplicationFiled: May 26, 2021Publication date: December 9, 2021Applicant: Siemens Healthcare GmbHInventor: Anja FRITZLER
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Publication number: 20210383997Abstract: An X-ray radiator and an X-ray assembly are disclosed. The X-ray radiator according to an embodiment has an evacuated X-ray tube housing, mounted to be rotatable about a rotation axis, the X-ray tube housing including an anode and an electron source. The anode is arranged within the X-ray tube housing non-rotatably relative to the X-ray tube housing and is configured to generate X-ray radiation via electrons impacting upon a focal spot of the anode, the electron source being mounted substantially stationary within the X-ray tube housing relative to the rotation axis. The electron source has a main emitter and at least one subsidiary emitter for emitting electrons. The electron emission of the main emitter and/or of the at least one subsidiary emitter is controllable such that a spatial movement of the focal spot due to a movement of the electron source is reduced.Type: ApplicationFiled: May 26, 2021Publication date: December 9, 2021Applicant: Siemens Healthcare GmbHInventor: Anja FRITZLER
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Patent number: 11172905Abstract: A method, in an embodiment, is for setting an X-ray intensity using a structured anode or a field emitter cathode or a finger-shaped cathode head. Other embodiments include an associated X-ray device, an associated single X-ray tube CT scanner, an associated dual X-ray tube CT scanner, and an associated computer program product.Type: GrantFiled: May 12, 2020Date of Patent: November 16, 2021Assignee: Siemens Healthcare GmbHInventors: Dieter Matuszok, Anja Fritzler, Martin Petersilka
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Patent number: 11075052Abstract: The present disclosure provides an x-ray device including a housing configured to provide a vacuum therein, a cathode arranged inside the housing and configured to emit electrons, an anode arranged inside the housing and configured to produce x-ray radiation when impacted by electrons emitted by the cathode, and a converter configured to convert the x-ray radiation produced by the anode into monochromatic x-ray radiation, wherein the anode is configured to produce x-ray radiation in transmission and is arranged between the cathode and the converter. The present disclosure may be used in medical imaging, therapy, spectroscopy, and the like. Geometries and configurations may be improved compared to previously known x-ray devices when it comes to requirements for space, materials used, complexity of electrical wiring, distance between cathode and anode, and providing supplementary functions.Type: GrantFiled: September 27, 2019Date of Patent: July 27, 2021Assignee: Siemens Healthcare GmbHInventors: Jörg Freudenberger, Anja Fritzler, Peter Geithner, Peter Hackenschmied, Thomas Weber
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Publication number: 20210082655Abstract: An x-ray emitter includes an x-ray tube and an x-ray emitter housing. In an embodiment, the x-ray tube includes an evacuated x-ray tube housing, a cathode for emitting electrons and an anode for generating x-rays as a function of the electrons. Further, in an embodiment, the x-ray emitter housing includes the x-ray tube and outside of the x-ray tube, a gaseous cooling medium. In an embodiment, the x-ray emitter further includes a compressor for a forced convection of the gaseous cooling medium for cooling the x-ray tube, a pressure ratio between the intake side and pressure side of the compressor being greater than 1.3.Type: ApplicationFiled: September 8, 2020Publication date: March 18, 2021Applicant: Siemens Healthcare GmbHInventors: Lukas HAVLA, Anja FRITZLER, Peter ROEHRER
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Publication number: 20200395187Abstract: An x-ray tube includes an electron emitter to emit an electron beam; and a multilayer anode including a first anode layer facing the electron beam and a second anode layer facing away from the electron beam. The first anode layer includes a first anode material to generate a braking radiation via the electron beam and the second anode layer includes a second anode material to generate a further x-ray radiation via the braking radiation. Thee further x-ray radiation is relatively more monochromatic than the braking radiation and wherein the first anode layer and the second anode layer adjoin in a planar manner.Type: ApplicationFiled: June 3, 2020Publication date: December 17, 2020Applicant: Siemens Healthcare GmbHInventors: Anja FRITZLER, Joerg FREUDENBERGER, Marcus RADICKE, Peter GEITHNER