Patents by Inventor Peter Mazurkewitz
Peter Mazurkewitz 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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Publication number: 20150241540Abstract: The invention provides for a medical instrument (200, 400, 500) comprising a magnetic resonance imaging system (202), a transducer (222) for mechanically vibrating at least a portion of the subject within the imaging zone. Instructions cause a processor (236) controlling the medical instrument to: control (100) the transducer to vibrate; control (102) the magnetic resonance imaging system to repeatedly acquire the magnetic resonance data (252) using a first spatially encoding pulse sequence (250); control (104) the magnetic resonance imaging system to acquire navigator data (256) using a second spatially encoding pulse sequence (254); construct (106) a set of navigator profiles (258, 804, 904, 1004, 1108, 1208, 1308) using the navigator data; determine (108) at least one parameter (260) descriptive of transducer vibrations using the set of navigator profiles; and reconstruct (110) at least one magnetic resonance rheology image (262) from the magnetic resonance data.Type: ApplicationFiled: September 9, 2013Publication date: August 27, 2015Inventors: Peter Vernickel, Daniel Wirtz, Christoph Leussler, Peter Mazurkewitz
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Publication number: 20150208944Abstract: An endorectal coil (1) includes a tube (40), a spreader (44), and one or more electrically conductive elements (64). The tube (40) is configured for insertion into the rectum (42). The spreader (44) is configured to be positioned at a distal end of the tube (40) and mechanically spread to compress surrounding tissue after the tube (40) is inserted. The one or more electrically conductive elements (64) are tuned to receive magnetic resonance data disposed on at least one of the tube (40), the spreader (44), and adjacent the tube and spreader.Type: ApplicationFiled: August 5, 2013Publication date: July 30, 2015Inventors: Daniel Wirtz, Peter Mazurkewitz, Christoph Leussler
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Publication number: 20150148663Abstract: The invention relates to the field of magnetic resonance (MR) imaging. It concerns an oscillation applicator for MR rheology. It is an object of the invention to provide an oscillation applicator without restrictions regarding the usability for certain body regions. According to the invention, the oscillation applicator comprises at least one transducer which generates a reciprocating motion at a given frequency and a belt (19) mechanically coupled to the transducer, which belt (19) is designed to be wrapped around a patient's body (10). Moreover, the invention relates to a MR device (1) and to a method of MR imaging.Type: ApplicationFiled: May 30, 2013Publication date: May 28, 2015Inventors: Peter Vernickel, Christoph Leussler, Daniel Wirtz, Peter Mazurkewitz
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Publication number: 20150139520Abstract: A method includes displaying an iconic image of the human body and a list of predetermined anatomical regions. The method further includes displaying, in response to a user selected anatomical region, a scan box over a sub-portion of the iconic image. The method further includes receiving an input indicative of at least one of a scan box location of interest or a scan box geometry of interest, with respect to the anatomical region, of the first user. The method further includes at least one of re-locating or changing a geometry of the first initial scan box, in response thereto, creating a first user defined scan box for the first user. The method further includes creating a first transformation between a first template image representative of the selected anatomical region and the iconic image with the first user defined scan box for the first user, and storing the first transformation.Type: ApplicationFiled: January 20, 2015Publication date: May 21, 2015Inventors: Julien SENEGAS, Axel SAALBACH, Martin BERGTHOLDT, Thomas NETSCH, Peter MAZURKEWITZ
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Publication number: 20150002156Abstract: A dual- or multi-resonant RF/MR transmit and/or receive antenna (1, 2) especially in the form of a planar antenna or a volume array antenna (also called antenna array) is disclosed for MR image generation of at least two different nuclei like e.g. 1H, 19F, 3He, 13C, 23Na or other nuclei having different Larmor frequencies. Basically, the antenna is coupled by means of an inductive coupling device (LI) with related transmit/receive channels (T/R). By such an inductive coupling, the tuning and matching of the antenna at the different resonant frequencies is easier to be obtained than in case of a galvanic connection. Further, the invention relates to an MR imaging apparatus comprising such a dual- or multi-resonant RF/MR transmit and/or receive antenna.Type: ApplicationFiled: January 3, 2013Publication date: January 1, 2015Inventors: Christoph Leussler, Peter Mazurkewitz, Jochen Keupp
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Publication number: 20140009156Abstract: The invention relates to a method of MR imaging of at least a portion of a body (10) of a patient placed in an examination volume of a MR device (1), the method comprising the steps of: subjecting the portion of the body (10) to a first imaging sequence for acquiring a first signal data set (21); subjecting the portion of the body (10) to a second imaging sequence for acquiring a second signal data set (23), wherein the imaging parameters of the second imaging sequence differ from the imaging parameters of the first imaging sequence; reconstructing a MR image from the second signal data set (23) by means of regularization using the first signal data set (21) as prior information. Moreover, the invention relates to a MR device (1) and to a computer program for a MR device (1).Type: ApplicationFiled: February 28, 2012Publication date: January 9, 2014Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Mariya Ivanova Doneva, Stefanie Remmele, Peter Bornert, Peter Mazurkewitz, Julien Senegas, Jochen Keupp, Kay Nehrke
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Publication number: 20110313277Abstract: This invention relates to a method and device for reconstructing images of an object of interest. According to the invention, the device comprises a plurality of transmitting coils (102, 103, 115, 116) for generating a primary magnetic field; a plurality of measurement coils (121, 122, 129, 136); and means (150) for selecting and exciting a first pair of transmitting coils (102, 116) among the plurality of transmitting coils, wherein the first pair of transmitting coils (102, 116) are selected and excited in a way such that of transmitting coils is minimized at the location of at least one measurement coil among the plurality of measurement coils (121, 129). By minimizing the primary magnetic field at the location of the measurement coil(s), the device can reduce the dynamic range of measurement coils, resulting in simplified hardware design for magnetic induction tomography systems.Type: ApplicationFiled: February 1, 2010Publication date: December 22, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Claudia Hannelore Igney, Matthias Hamsch, Peter Mazurkewitz, Kai-Michael Luedeke
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Publication number: 20110133729Abstract: A method and a monitoring device for performing an RF-safe MIT scan is disclosed in which it is prevented that an RF exposure, especially a specific absorption rate (SAR), imposed on an examination object, especially a patient, exceeds certain limit values during a magnetic induction tomography (MIT) scan. This is achieved on the one hand by an RF simulation method for simulating intended MIT operating parameters and calculating a resulting RF exposure of the object, and on the other hand by a monitoring device for monitoring the RF power which is applied to the object.Type: ApplicationFiled: August 7, 2009Publication date: June 9, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Peter Vernickel, Peter Mazurkewitz, Daniel Wirtz, Christoph Leussler, Ulrich Katscher
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Publication number: 20090160442Abstract: A magnetic resonance system (8) comprises a radio frequency coil (36) which can resonate at least at first and second predetermined resonance frequencies. A tuning resonant circuit (110, 132) is serially coupled to the radio frequency coil (36). The tuning resonant circuit (110, 132) includes tuning components (Cp, Lp; Cp, Ch, Lh). Values of the tuning components (Cp, Lp; Cp, Ch, Lh) of the tuning circuit (110, 132) are selected such that a sensitivity profile of the radio frequency coil resonating at the first frequency substantially matches a sensitivity profile of the radio frequency coil resonating at the second frequency.Type: ApplicationFiled: March 15, 2007Publication date: June 25, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Peter Mazurkewitz, Christoph Leussler
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Publication number: 20080284435Abstract: A magnetic resonance imaging system includes main magnet (20) that produces a substantially spatially and temporally constant main magnetic field within a field of view. Magnetic field gradient coils (30) impose selected magnetic field gradients on the main magnetic field within the field of view. At least one radio frequency coil (44, 44?, 44?, 144, 154) is arranged to detect a magnetic resonance signal induced by an applied radio frequency pulse. The at least one radio frequency coil includes a radio frequency antenna (90) and electronics module (78, 78?) disposed on a substrate (72). The electronics are electrically connected with the radio frequency antenna (90). The electronics are mounted in a centered region (96) surrounded by the radio frequency antenna.Type: ApplicationFiled: November 16, 2004Publication date: November 20, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS NVInventors: Johannes Overweg, Peter Mazurkewitz, Christoph G. Leussler
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Publication number: 20080230715Abstract: An optical imaging apparatus (100) for examination of an object of interest (101), the optical imaging apparatus (100) comprising an optical radiation source (102) adapted to emit a primary optical radiation beam onto the object of interest (101), an optical radiation detector (106) adapted to detect a secondary optical radiation beam emitted by the object of interest (101) upon absorbing the primary optical radiation beam, a magnetic field generating element (107) adapted to generate an inhomogeneous magnetic field varying along an extension of the object of interest (101), and a determination unit (108) adapted to determine information concerning the object of interest (101) based on an analysis of the detected secondary optical radiation beam in combination with an analysis of the inhomogeneous magnetic field.Type: ApplicationFiled: July 25, 2006Publication date: September 25, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Tim Nielsen, Udo Van Stevendaal, Bernhard Gleich, Tobias Schaeffter, Paul Haaker, Peter Mazurkewitz, Steffen Weiss
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Patent number: 7362100Abstract: As disclosed herein, in a parallel magnetic resonance imaging method core magnetization is excited in an examination volume of a magnetic resonance (MR) device by generating at least one high frequency (HF) pulse. Two or more MR signals are recorded in parallel from the examination volume via two or more receiving channels (R, S) of the MR device using an HF coil arrangement (9), which comprises a number of coil elements (15, 16) which is greater than the number of receiving channels (R, S), wherein the respective MR signal on each receiving channel (R, S) is formed by weighted superimposition of coil signals (A, B, C, D, B) of the individual coil elements (15, 16). An MR image is reconstructed from the recorded MR signals, the MR signals being combined with one another taking into account effective spatial sensitivity profiles associated with the individual receiving channels (R, S).Type: GrantFiled: November 2, 2004Date of Patent: April 22, 2008Assignee: Koninklijke Philips Electronics N.V.Inventors: Volkmar Schulz, Peter Mazurkewitz
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Publication number: 20080077002Abstract: The present invention relates to novel methods and compounds for combined opticalultrasound imaging. The compounds of the present invention relate to particles comprising fluorescence donor and acceptor molecules for energy exchange via FRET. The methods of the present invention use ultrasound to modify the distance between donor and acceptor molecules present on the particles, and to consequently modify the fluorescence emitted by the donor and acceptor. The compounds and methods of the present invention are useful in medical or diagnostic imaging.Type: ApplicationFiled: September 6, 2005Publication date: March 27, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventors: Tim Nielsen, Steffen Weiss, Tobias Schaeffter, Bernhard Gleich, Paul Haaker, Udo Van Stevendaal, Peter Mazurkewitz
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Publication number: 20070069727Abstract: The invention relates to a parallel magnetic resonance imaging method, in which core magnetization is excited in the examination volume of an MR device by generating at least one HF pulse. Two or more MR signals are then recorded in parallel from the examination volume via two or more receiving channels (R, S) of the MR device using an HF coil arrangement (9), which comprises a number of coil elements (15, 16) which is greater than the number of receiving channels (R, S), wherein the respective MR signal on each receiving channel (R, S) is formed by weighted superimposition of coil signals (A, B, C, D, E) of the individual coil elements (15, 16). Finally, according to the invention, an MR image is reconstructed from the recorded MR signals, the MR signals being combined with one another taking into account effective spatial sensitivity profiles associated with the individual receiving channels (R, S).Type: ApplicationFiled: November 2, 2004Publication date: March 29, 2007Applicant: Koninklijke Phillips Electronics NVInventors: Volkmar Schulz, Peter Mazurkewitz