Patents by Inventor Ulrich Kühn
Ulrich Kühn 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: 11602316Abstract: A method is for capturing projection data. The method includes positioning the first diaphragm jaw and a second diaphragm jaw to set a layer collimation of a fan beam of radiation via the first diaphragm jaw and the second diaphragm jaw; capturing projection data of a region of a patient to be imaged via a detector and radiation source rotated in a plane of rotation, moving the region of the patient to be imaged relative to the plane of rotation, the fan beam penetrating the region of the patient to be imaged and striking the detector; and moving at least one of the first and second diaphragm jaw during the capturing, to dynamically adjust a position of a boundary surface of the fan beam to a position of a boundary surface of the region, to avoid the fan beam penetrating the patient outside the region to be imaged.Type: GrantFiled: September 8, 2020Date of Patent: March 14, 2023Assignee: Siemens Healthcare GmbHInventors: Matthias Berner, Ulrich Kuehn, Maurizio Bianconi
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Publication number: 20230007811Abstract: A gantry for a computed tomography device has a support structure, a pivot bearing, a rotating frame, a first braking resistor configured to electromotively brake a rotational movement of the rotating frame, and a heat conductor configured to dissipate heat from the first braking resistor. A heat conductor and a pressure duct wall are interconnected to form a heat-conductor-to-pressure-duct-wall connection that is detachable, form-fitting, planar, and thermally conductive. The heat is transferrable from the first braking resistor to the airflow via the heat conductor, the heat-conductor-to-pressure-duct-wall connection and the pressure duct wall.Type: ApplicationFiled: June 27, 2022Publication date: January 5, 2023Applicant: Siemens Healthcare GmbHInventors: Florian KIESSLING, Ulrich KUEHN
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Publication number: 20220249034Abstract: A gantry frame for a computed tomography system is described. The gantry frame comprises a cylindrical drum frame with a cylinder barrel which has a profiled barrel structure. A gantry is also described. Additionally, a computed tomography system is described. A method for manufacturing a gantry frame for a computed tomography system is also described.Type: ApplicationFiled: February 1, 2022Publication date: August 11, 2022Applicant: Siemens Healthcare GmbHInventors: Ulrich KUEHN, Matthias HUPFAUF
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Patent number: 11197650Abstract: A cooling system for a computed tomography device includes a fan for generating an air stream and a fan housing; first flow duct for guiding the air stream is formed in the fan housing and relatively widens out in a direction of flow of the air stream; and an annular frame for accommodating a rotational bearing. A rotating frame of the computed tomography device is connectable to the annular frame and is mounted rotatably relative to the annular frame about an axis of rotation. An annular second flow duct for guiding the air stream is formed in the annular frame and the fan is attached to the annular frame via the fan housing such that the fan is arranged outside the annular frame and the air stream is guided via the first flow duct from the fan to the annular second flow duct.Type: GrantFiled: March 17, 2020Date of Patent: December 14, 2021Assignee: SIEMENS HEALTHCARE GMBHInventors: Ulrich Kuehn, Friedrich Distler, Hans-Juergen Mueller
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Publication number: 20210077039Abstract: A method is for capturing projection data. The method includes positioning the first diaphragm jaw and a second diaphragm jaw to set a layer collimation of a fan beam of radiation via the first diaphragm jaw and the second diaphragm jaw; capturing projection data of a region of a patient to be imaged via a detector and radiation source rotated in a plane of rotation, moving the region of the patient to be imaged relative to the plane of rotation, the fan beam penetrating the region of the patient to be imaged and striking the detector; and moving at least one of the first and second diaphragm jaw during the capturing, to dynamically adjust a position of a boundary surface of the fan beam to a position of a boundary surface of the region, to avoid the fan beam penetrating the patient outside the region to be imaged.Type: ApplicationFiled: September 8, 2020Publication date: March 18, 2021Applicant: Siemens Healthcare GmbHInventors: Matthias BERNER, Ulrich KUEHN, Maurizio BIANCONI
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Patent number: 10856824Abstract: An embodiment of the invention relates to a cooling system for an imaging apparatus having a gantry for cooling components arranged in the gantry, including a fan and a solid body. The solid body has an inlet opening, and an outlet opening, wherein the inlet opening is larger than the outlet opening. The solid body also has a positive guide, defined by a continuous outer boundary, for a first fluid from the inlet opening to the outlet opening, which continuously transforms the geometry of the inlet opening into the geometry of the outlet opening and defines a flow path for the first fluid, and has a flow channel for a second fluid, which is arranged in heat exchange communication with the flow path, and has an inlet and an outlet for the second fluid.Type: GrantFiled: March 27, 2019Date of Patent: December 8, 2020Assignee: SIEMENS HEALTHCARE GMBHInventors: Ulrich Kühn, Hans-Jürgen Müller, Marco Del Antonio, Friedrich Distler
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Publication number: 20200315057Abstract: A cooling system for a computed tomography device includes a fan for generating an air stream and a fan housing; first flow duct for guiding the air stream is formed in the fan housing and relatively widens out in a direction of flow of the air stream; and an annular frame for accommodating a rotational bearing. A rotating frame of the computed tomography device is connectable to the annular frame and is mounted rotatably relative to the annular frame about an axis of rotation. An annular second flow duct for guiding the air stream is formed in the annular frame and the fan is attached to the annular frame via the fan housing such that the fan is arranged outside the annular frame and the air stream is guided via the first flow duct from the fan to the annular second flow duct.Type: ApplicationFiled: March 17, 2020Publication date: October 1, 2020Applicant: Siemens Healthcare GmbHInventors: Ulrich KUEHN, Friedrich DISTLER, Hans-Juergen MUELLER
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Publication number: 20190298286Abstract: An embodiment of the invention relates to a cooling system for an imaging apparatus having a gantry for cooling components arranged in the gantry, including a fan and a solid body. The solid body has an inlet opening, and an outlet opening, wherein the inlet opening is larger than the outlet opening. The solid body also has a positive guide, defined by a continuous outer boundary, for a first fluid from the inlet opening to the outlet opening, which continuously transforms the geometry of the inlet opening into the geometry of the outlet opening and defines a flow path for the first fluid, and has a flow channel for a second fluid, which is arranged in heat exchange communication with the flow path, and has an inlet and an outlet for the second fluid.Type: ApplicationFiled: March 27, 2019Publication date: October 3, 2019Applicant: Siemens Healthcare GmbHInventors: Ulrich KUEHN, Hans-Juergen MUELLER, Marco DEL ANTONIO, Friedrich DISTLER
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Patent number: 9799480Abstract: The embodiments relate to a CT system with a stationary part and a rotatable part, which is supported rotatably in the stationary part. At least one x-ray tube unit cooled by a cooling fluid, an x-ray detector lying opposite the x-ray tube unit, and a cooling device coupled in terms of fluid technology to the x-ray tube unit via a coolant circuit are disposed in the rotatable part. A cooling air channel, through which cooling air is able to be fed into the rotatable part, and an exhaust air channel, through which heated exhaust air is able to be taken away from the rotatable part, are disposed in the stationary part. In accordance with the embodiments, at least one overpressure relief valve is disposed in the coolant circuit, through which the cooling fluid is able to be conveyed away in the exhaust air channel.Type: GrantFiled: March 17, 2015Date of Patent: October 24, 2017Assignee: Siemens AktiengesellschaftInventors: Herbert Gruchatka, Ulrich Kühn, Lothar Werner
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Patent number: 9724060Abstract: A CT system is disclosed for generating tomographic recordings of an examination object. In an embodiment, the CT system includes at least a gantry with a rotatable support for receiving components of the CT system, and a cooling system for cooling the components secured to the gantry with at least one air duct. In at least one embodiment, an incoming-air duct of the cooling system is divided into at least two segments to ensure uniform pressure distribution in the incoming-air duct.Type: GrantFiled: March 24, 2015Date of Patent: August 8, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Ulrich Kühn, Christian Willming
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Publication number: 20150272525Abstract: A CT system is disclosed for generating tomographic recordings of an examination object. In an embodiment, the CT system includes at least a gantry with a rotatable support for receiving components of the CT system, and a cooling system for cooling the components secured to the gantry with at least one air duct. In at least one embodiment, an incoming-air duct of the cooling system is divided into at least two segments to ensure uniform pressure distribution in the incoming-air duct.Type: ApplicationFiled: March 24, 2015Publication date: October 1, 2015Inventors: Ulrich KÜHN, Christian WILLMING
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Publication number: 20150270092Abstract: The embodiments relate to a CT system with a stationary part and a rotatable part, which is supported rotatably in the stationary part. At least one x-ray tube unit cooled by a cooling fluid, an x-ray detector lying opposite the x-ray tube unit, and a cooling device coupled in terms of fluid technology to the x-ray tube unit via a coolant circuit are disposed in the rotatable part. A cooling air channel, through which cooling air is able to be fed into the rotatable part, and an exhaust air channel, through which heated exhaust air is able to be taken away from the rotatable part, are disposed in the stationary part. In accordance with the embodiments, at least one overpressure relief valve is disposed in the coolant circuit, through which the cooling fluid is able to be conveyed away in the exhaust air channel.Type: ApplicationFiled: March 17, 2015Publication date: September 24, 2015Inventors: Herbert Gruchatka, Ulrich Kühn, Lothar Werner
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Publication number: 20120082288Abstract: The present embodiments relate to an arrangement for the contactless transmission of first electrical signals, second electrical signals and electrical energies between a fixed gantry part of a computed tomography system and a gantry part that may be rotated around an axis of rotation. The arrangement includes a first annular-shaped carrier ring arranged on the rotatable gantry part, at least a first conductor element arranged in or on the first annular-shaped carrier ring to receive the electrical energy, and at least a second conductor element arranged in or on the first annular-shaped carrier ring to output the first electrical signals.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Inventors: Horst Friesner, Florian Hofmann, Ulrich Kühn, Thomas Luthardt, Hans-Jürgen Müller, Helmut Repp, Edgar Schindler, Ludwig Welker, Marco del Antonio
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Patent number: 7953208Abstract: A collimator device has at least one masking device that is adjustable between two end positions for collimation of a beam fan in an x-ray CT device, wherein the x-ray fan is schematically not masked in a first end position. The x-ray beam is more than half-masked in a second end position of the masking device. In a method for operation of such a collimator device as well as an x-ray CT device for examination of a subject having an x-ray source, a collimator device, and a control device for regulation of the aperture width of the masking device, an x-ray detector is arranged opposite the x-ray source and the collimator device and that detects the x-rays modified due to the intervening examination subject; and an image construction device reconstructs an image of the examination subject therefrom.Type: GrantFiled: June 20, 2008Date of Patent: May 31, 2011Assignee: Siemens AktiengesellschaftInventors: Ulrich Kuehn, Heiko Wolf
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Publication number: 20080317212Abstract: A collimator device has at least one masking device that is adjustable between two end positions for collimation of a beam fan in an x-ray CT device, wherein the x-ray fan is schematically not masked in a first end position. The x-ray beam is more than half-masked in a second end position of the masking device. In a method for operation of such a collimator device as well as an x-ray CT device for examination of a subject having an x-ray source, a collimator device, and a control device for regulation of the aperture width of the masking device, an x-ray detector is arranged opposite the x-ray source and the collimator device and that detects the x-rays modified due to the intervening examination subject; and an image construction device reconstructs an image of the examination subject therefrom.Type: ApplicationFiled: June 20, 2008Publication date: December 25, 2008Inventors: Ulrich Kuehn, Heiko Wolf
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Patent number: 7284905Abstract: An x-ray radiator has a radiator housing from which x-ray radiation originating from a focus is emitted. A pre-diaphragm is disposed in the beam path of the x-ray radiation and has a diaphragm opening in or on the radiator housing. The pre-diaphragm is provided with at least one additional slit through which x-ray radiation can strike on at least one element for determination of the position of the focus. This element is sensitive to x-ray radiation. An x-ray device has such an x-ray radiator and a computed tomography apparatus has such an x-ray device.Type: GrantFiled: May 31, 2005Date of Patent: October 23, 2007Assignee: Siemens AktiengesellschaftInventor: Ulrich Kühn
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Patent number: 7263169Abstract: An x-ray computed tomography apparatus has an x-ray source that can be rotated around a system axis and a diaphragm that is disposed downstream from the x-ray source in the ray propagation direction for gating a fan-shaped ray beam that irradiates a subject. The diaphragm has two gating elements in each of which an absorber element is held, clamped on a carrier at two points in a clamping device provided on the carrier.Type: GrantFiled: May 31, 2005Date of Patent: August 28, 2007Assignee: Siemens AktiengesellschaftInventor: Ulrich Kühn
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Patent number: 7200204Abstract: A fastening device for a diaphragm for x-ray radiation has a base plate provided with an opening for the passage of x-ray radiation, the base plate being able to accommodate load forces, and at least one covering device which can be arranged for enclosure of a space on the base plate. A diaphragm can be housed in the space. A computer tomography apparatus embodies such a fastening device for a diaphragm.Type: GrantFiled: May 31, 2005Date of Patent: April 3, 2007Assignee: Siemens AktiengesellschaftInventors: Friedrich Distler, Ulrich Kühn