Patents by Inventor Jan Fritz
Jan Fritz 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: 12038490Abstract: An embodiment of a method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, includes performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan, and performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans.Type: GrantFiled: November 1, 2018Date of Patent: July 16, 2024Assignees: SIEMENS HEALTHINEERS AG, THE JOHNS HOPKINS UNIVERSITYInventors: Jan Fritz, Dingxin Wang, Esther Raithel, Thomas Beck, Flavio Carinci, Mario Zeller
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Publication number: 20240061056Abstract: A magnetic resonance imaging examination of an anatomic region of a subject is performed with a magnetic resonance imaging system. A fast metal detection sequence configured to detect the presence of a metal object within or at the subject is performed. A control unit determines whether a metal object is detected, wherein the control unit initiates a standard examination workflow if no metal object is detected during the fast metal detection sequence, and wherein the control unit initiates a modified examination workflow that is different from the standard examination workflow if a metal object is detected during the fast metal detection sequence.Type: ApplicationFiled: August 16, 2023Publication date: February 22, 2024Inventors: Mathias Nittka, Inge Manuela Brinkmann, Torsten Ehlers, Jan Fritz
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Publication number: 20230298230Abstract: Various techniques of reconstructing multiple Magnetic Resonance Imaging, MRI, images for multiple slices based on an MRI measurement dataset that is acquired using a simultaneous multi-slice protocol and undersampling and K-space are disclosed. A convolutional neural network can be used to implement a regularization operation of an iterative optimization for the reconstruction, i.e., an unrolled neural network or variational neural network. A combination with Dixon imaging, i.e., separation of multiple chemical species, is disclosed.Type: ApplicationFiled: March 18, 2022Publication date: September 21, 2023Inventors: Esther Raithel, Boris Mailhe, Mahmoud Mostapha, Jan Fritz, Florian Knoll, Marcel Dominik Nickel, Gregor Körzdörfer, Inge Brinkmann, Mariappan S. Nadar
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Patent number: 11629784Abstract: A sealing ring includes: a first axial leg; and a sealing leg with a sealing lip. When viewed in cross section, the sealing ring is in a shape of a seven. The sealing leg is connected to a first end face of the first axial leg by a first joint. The sealing leg has, on a side facing axially toward the first end face, a dirt lip with at least one sealing edge and a radially internal first boundary surface and a radially external second boundary surface.Type: GrantFiled: February 26, 2021Date of Patent: April 18, 2023Assignee: CARL FREUDENBERG KGInventors: Andreas Koch, Thomas Segbers, Jan Fritz, Mirko Minners, Stefan Scheffler, Akio Shimizu
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Publication number: 20210270372Abstract: A sealing ring includes: a first axial leg; and a sealing leg with a sealing lip. When viewed in cross section, the sealing ring is in a shape of a seven. The sealing leg is connected to a first end face of the first axial leg by a first joint. The sealing leg has, on a side facing axially toward the first end face, a dirt lip with at least one sealing edge and a radially internal first boundary surface and a radially external second boundary surface.Type: ApplicationFiled: February 26, 2021Publication date: September 2, 2021Inventors: Andreas Koch, Thomas Segbers, Jan Fritz, Mirko Minners, Stefan Scheffler, Akio Shimizu
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Publication number: 20210231762Abstract: An embodiment of a method for recording diagnostic measurement data of a knee of an examination object in knee imaging by a magnetic resonance device, includes performing an overview scan of the knee of the examination object, wherein overview measurement data is acquired in the overview scan, and performing diagnostic scans of the knee of the examination object based on the acquired overview measurement data, wherein two-dimensional diagnostic measurement data is acquired in the diagnostic scans.Type: ApplicationFiled: November 1, 2018Publication date: July 29, 2021Applicants: Siemens Healthcare GmbH, The Johns Hopkins UniversityInventors: Jan FRITZ, Dingxin WANG, Esther RAITHEL, Thomas BECK, Flavio CARINCI, Mario ZELLER
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Patent number: 10561443Abstract: A method for performing image-guided embryo transfer for in vitro fertilization includes performing a pre-operative magnetic resonance imaging (MRI) scan of a subjects pelvic region to yield a first MRI image dataset. A computer applies a segmentation routine to the first MRI image dataset to yield segment data which is then used by the computer to create an anatomical model of the subjects pelvic region. The computer determines an optimal implant location based on the anatomical model and creates a three-dimensional rendering of the optimal implant location based on the first MRI image dataset.Type: GrantFiled: June 5, 2015Date of Patent: February 18, 2020Assignees: Siemens Healthcare GmbH, The Johns Hopkins UniversityInventors: Wesley David Gilson, Jan Fritz
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Patent number: 10548505Abstract: A magnetic resonance method and system are provided for magnetic resonance (MR) image-guided insertion of an object into a biological tissue along a predetermined trajectory. The trajectory provides a path between a starting point and a target site within the tissue. Sufficiently high resolution images can be generated in real time to precisely guide the needle placement. A compressed sensing approach is used to generate the images based on minimization of a cost function, where the cost function is based on the predetermined needle path, artifact effects associated with the needle, the negligible changes in the images away from the trajectory, and the limited differences between successive images. The improved combination of spatial and temporal resolution facilitates an insertion procedure that can be continuously adjusted to accurately follow a predetermined trajectory in the tissue, without interruptions to obtain verification images.Type: GrantFiled: March 15, 2016Date of Patent: February 4, 2020Assignees: Siemens Healthcare GmbH, The Johns Hopkins UniversityInventors: Eva Rothgang, Arne Hengerer, Lars Lauer, Jan Fritz, Paul Bottomley, Wesley David Gilson, Robert Grimm
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Patent number: 10459045Abstract: Sterile RF coil arrangements for use in magnetic resonance imaging are provided. The sterile coil arrangements can be formed by spraying or coating a curable liquid onto an RF coil housing and allowing the liquid to cure or dry to form a continuous sterile layer on the coil housing. The thickness of the sterile layer can be between 100 and 1000 micrometers. The curable liquid can include an antimicrobial or antibacterial agent, such as silver ions or triclosan, to better maintain sterility of the coil arrangement. The curable liquid can be selected such that it adheres to the housing when cured and is also removable without leaving residue behind.Type: GrantFiled: March 28, 2016Date of Patent: October 29, 2019Assignees: Siemens Healthcare GmbH, The Johns Hopkins UniversityInventors: Arne Hengerer, Eva Rothgang, Lars Lauer, Jonathan Lewin, Jan Fritz, Clifford Weiss, Katarzyna J. Macura, Paul Bottomley, Wesley David Gilson
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Patent number: 10267878Abstract: In a method and apparatus for recording a magnetic resonance dataset of at least one foreign body in a target region of a patient, a magnetic resonance sequence having an ultra-short echo time, which is less than 500 ?s is used for recording the magnetic resonance data.Type: GrantFiled: July 30, 2015Date of Patent: April 23, 2019Assignees: Siemens Aktiengesellschaft, The John Hopkins UniversityInventors: Jan Fritz, David Grodzki, Heiko Meyer, Mathias Nittka
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Patent number: 10209325Abstract: A configurable coil arrangement for use with MRI-guided procedures is provided that facilitates optimal imaging for both pre-procedure planning and imaging of the target sites during the procedure. The coil arrangement includes a plurality of connected coil elements. Spacers connecting the coil elements can be adjustable and/or deformable to provide one or more openings in the coil arrangement of optimal size for accessing the subject within the imaged region. Individual coil elements can also be removed to provide access openings during such procedures, or left in the array for improved pre- and post-procedure image quality. The MRI system can be configured to detect configurations of the coil arrangement and modify imaging parameters to optimize image quality.Type: GrantFiled: February 29, 2016Date of Patent: February 19, 2019Assignees: Siemens Healthcare GmbH, The Johns Hopkins UniversityInventors: Eva Rothgang, Volker Matschl, Arne Hengerer, Lars Lauer, Wesley David Gilson, Jonathan Lewin, Jan Fritz, Clifford Weiss, Katarzyna Macura, Paul Bottomley
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Patent number: 10180469Abstract: A magnetic resonance imaging system and method are provided that include user control of certain functions using physical gestures, such as hand motions or the like. The gesture control aspects can include one or more cameras, and a processor configured to detect and recognize gestures corresponding to predetermined commands and to provide signals to execute the commands. A verification switch, such as a foot switch, can be included to improve safety and reliability of the gesture control aspects. This switch can be used to activate the gesture detection aspects and/or to confirm a recognized gesture command prior to its execution.Type: GrantFiled: October 28, 2015Date of Patent: January 15, 2019Assignees: Siemens Healthcare GmbH, The John Hopkins UniversityInventors: Arne Hengerer, Eva Rothgang, Lars Lauer, Jonathan Lewin, Wesley David Gilson, Jan Fritz, Clifford R. Weiss, Katarzyna J. Macura, Paul A. Bottomley
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Publication number: 20170340354Abstract: A method for performing image-guided embryo transfer for in vitro fertilization includes performing a pre-operative magnetic resonance imaging (MRI) scan of a subjects pelvic region to yield a first MRI image dataset. A computer applies a segmentation routine to the first MRI image dataset to yield segment data which is then used by the computer to create an anatomical model of the subjects pelvic region. The computer determines an optimal implant location based on the anatomical model and creates a three-dimensional rendering of the optimal implant location based on the first MRI image dataset.Type: ApplicationFiled: June 5, 2015Publication date: November 30, 2017Inventors: Wesley David GILSON, Jan FRITZ
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Publication number: 20170276742Abstract: Sterile RF coil arrangements for use in magnetic resonance imaging are provided. The sterile coil arrangements can be formed by spraying or coating a curable liquid onto an RF coil housing and allowing the liquid to cure or dry to form a continuous sterile layer on the coil housing. The thickness of the sterile layer can be between 100 and 1000 micrometers. The curable liquid can include an antimicrobial or antibacterial agent, such as silver ions or triclosan, to better maintain sterility of the coil arrangement. The curable liquid can be selected such that it adheres to the housing when cured and is also removable without leaving residue behind.Type: ApplicationFiled: March 28, 2016Publication date: September 28, 2017Inventors: Arne Hengerer, Eva Rothgang, Lars Lauer, Jonathan Lewin, Jan Fritz, Clifford Weiss, Katarzyna J. Macura, Paul Bottomley, Wesley David Gilson
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Publication number: 20170269174Abstract: A magnetic resonance method and system are provided for magnetic resonance (MR) image-guided insertion of an object into a biological tissue along a predetermined trajectory. The trajectory provides a path between a starting point and a target site within the tissue. Sufficiently high resolution images can be generated in real time to precisely guide the needle placement. A compressed sensing approach is used to generate the images based on minimization of a cost function, where the cost function is based on the predetermined needle path, artifact effects associated with the needle, the negligible changes in the images away from the trajectory, and the limited differences between successive images. The improved combination of spatial and temporal resolution facilitates an insertion procedure that can be continuously adjusted to accurately follow a predetermined trajectory in the tissue, without interruptions to obtain verification images.Type: ApplicationFiled: March 15, 2016Publication date: September 21, 2017Inventors: Eva Rothgang, Arne Hengerer, Lars Lauer, Jan Fritz, Paul Bottomley, Wesley David Gilson, Robert Grimm
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Publication number: 20170248666Abstract: A configurable coil arrangement for use with MRI-guided procedures is provided that facilitates optimal imaging for both pre-procedure planning and imaging of the target sites during the procedure. The coil arrangement includes a plurality of connected coil elements. Spacers connecting the coil elements can be adjustable and/or deformable to provide one or more openings in the coil arrangement of optimal size for accessing the subject within the imaged region. Individual coil elements can also be removed to provide access openings during such procedures, or left in the array for improved pre- and post-procedure image quality. The MRI system can be configured to detect configurations of the coil arrangement and modify imaging parameters to optimize image quality.Type: ApplicationFiled: February 29, 2016Publication date: August 31, 2017Inventors: Eva Rothgang, Volker Matschl, Arne Hengerer, Lars Lauer, Wesley David Gilson, Jonathan Lewin, Jan Fritz, Clifford Weiss, Katarzyna Macura, Paul Bottomley
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Publication number: 20170123030Abstract: A magnetic resonance imaging system and method are provided that include user control of certain functions using physical gestures, such as hand motions or the like. The gesture control aspects can include one or more cameras, and a processor configured to detect and recognize gestures corresponding to predetermined commands and to provide signals to execute the commands. A verification switch, such as a foot switch, can be included to improve safety and reliability of the gesture control aspects. This switch can be used to activate the gesture detection aspects and/or to confirm a recognized gesture command prior to its execution.Type: ApplicationFiled: October 28, 2015Publication date: May 4, 2017Inventors: Arne Hengerer, Eva Rothgang, Lars Lauer, Jonathan Lewin, Wesley David Gilson, Jan Fritz, Clifford R. Weiss, Katarzyna J. Macura, Paul A. Bottomley
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Publication number: 20160033602Abstract: In a method and apparatus for recording a magnetic resonance dataset of at least one foreign body in a target region of a patient, a magnetic resonance sequence having an ultra-short echo time, which is less than 500 ?s is used for recording the magnetic resonance data.Type: ApplicationFiled: July 30, 2015Publication date: February 4, 2016Applicants: THE JOHNS HOPKINS UNIVERSITY, SIEMENS AKTIENGESELLSCHAFTInventors: Jan Fritz, David Grodzki, Heiko Meyer, Mathias Nittka
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Patent number: 8714431Abstract: A friction welding tool having a pin and a clamping device with a counter bearing, a holddown element and a spring element. The pin has a coupling section for releasable, rotationally fixed coupling to a rotating output device of a machine tool. The counter bearing is held on the pin between the pin's coupling and engagement ends in a manner that allows the counter bearing to be axially immovable on but freely rotatable about a longitudinal axis of the pin. The holddown element surrounds the pin and is arranged on a side of the counter bearing facing the engagement end. The holddown element has a bearing surface for bearing on the workpiece arrangement. The spring element is provided between the holddown element and the counter bearing and is mounted on the pin in such a way that it is elastically slidable along the longitudinal axis of the pin.Type: GrantFiled: November 21, 2012Date of Patent: May 6, 2014Assignee: Helmholtz-Zentrum Geesthacht Zentrum für Material—und Küstenforschung GmbHInventors: Arne Roos, Jan Fritz, Luciano Bergmann, Jorge F. dos Santos
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Patent number: 5779537Abstract: A deposit cupboard (1) for solvents, combustible liquids and the like, comprises shelves (2) and at least one door. The cupboard is assigned an air intake holes (20) and an exhaust device (5), and distinguishes itself through the following combination of features: a) that the shelves (2) of the cupboard (1) are perforated and/or positioned at a distance from at least one of the adjacent inner faces of the side walls of the cupboard, in order to effect a minimum resistance against the air flow; b) that the cupboard is assigned a fire extinguishing apparatus (18) having an automatic, preferably thermostat-controlled release means; and c) that the top plate (4) of the cupboard is pivotally supported and adapted--upon the occurrence of an explosion within the cupboard--to be swung limitedly up into a securing or protecting position, wherein it forms an inclinedly directed shield, protecting the personnel from the effects of the explosion.Type: GrantFiled: July 5, 1996Date of Patent: July 14, 1998Inventor: Jan Fritz Alden