Patents by Inventor Bjoern Weissler
Bjoern Weissler 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: 10126391Abstract: A combined-modality imaging assembly includes a Magnetic Resonance (MR) imaging system and a nuclear imaging system. The nuclear imaging system has a plurality of (M) modules; and the combined imaging assembly includes a timing control unit having a reference clock unit; and at least one of a phase shifting unit and a frequency shifting unit. At least one of the phase shifting unit and the frequency shifting unit is configured to receive a reference clock signal from the reference clock unit and to generate a plurality of (M) shifted clock signals for clocking the (M) modules such that at least one of the (M) shifted clock signals is shifted respective the reference clock signal in at least one of frequency or phase. In so doing, reduced interference between the modules of the nuclear imaging system and the MR imaging system is obtained.Type: GrantFiled: July 9, 2014Date of Patent: November 13, 2018Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Bjoern Weissler, Pierre Gebhardt, Jacob Adrian Clemens Wehner, Volkmar Schulz
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Patent number: 10061043Abstract: The invention concerns an evaluation apparatus (50) for evaluating gamma radiation events detected by a gamma camera (10) and identifying valid gamma radiation events, said (gamma camera (10) including a scintillator (12) for emitting scintillation photons (42) at photo conversion positions (44) in the scintillator (12) in response to incident gamma rays (22) and resulting gamma radiation events and a position-sensitive photodetector(14) for detecting emitted scintillation photons (42) and obtaining therefrom a spatial signal distribution (24). The invention further concerns a calibration apparatus (56) for in-situ calibrating a position-sensitive photodetector (14) of a gamma camera (10) for the detection of gamma radiation events.Type: GrantFiled: April 30, 2014Date of Patent: August 28, 2018Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Christoph Werner Lerche, Sarah Lodomez, Volkmar Schulz, Bjoern Weissler
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Patent number: 10054651Abstract: A data detection device is used in combination with a magnetic resonance imaging (MRI) apparatus. A magnetic field detection unit (34) serves to detect a temporally varying magnetic field generated by the MRI apparatus, and a timestamping unit (35) generates magnetic field detection timestamps in dependence of the detected temporally varying magnetic field. This allows determining a temporal relation to acquired MRI data.Type: GrantFiled: February 6, 2013Date of Patent: August 21, 2018Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Bjoern Weissler, Manfred Bruno Zinke
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Publication number: 20160161578Abstract: The invention relates to a system, a method and a computer program product for use in a combined-modality imaging assembly that includes a Magnetic Resonance (MR) imaging system and a nuclear imaging system. The nuclear imaging system has a plurality of (M) modules; and the combined imaging assembly includes a timing control unit having a reference clock unit; and at least one of a phase shifting unit and a frequency shifting unit. At least one of the phase shifting unit and the frequency shifting unit is configured to receive a reference clock signal from the reference clock unit and to generate a plurality of (M) shifted clock signals for clocking the (M) modules such that at least one of the (M) shifted clock signals is shifted respective the reference clock signal in at least one of frequency or phase. In so doing, reduced interference between the modules of the nuclear imaging system and the MR imaging system is obtained.Type: ApplicationFiled: July 9, 2014Publication date: June 9, 2016Inventors: Bjoern WEISSLER, Pierre GEBHARDT, Jakob Adrian Clemens WEHNER, Volkmar SCHULZ
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Patent number: 9322940Abstract: A detector module (50) for a positron emission tomography (PET) system (10) includes an optical transceiver (66) receiving an optical data stream from a PET processing system (48). The data stream includes a pulse train carrying a command to generate sync/reset pulses. The system (10) further includes synchronization circuitry (70) configured to simultaneously jitter clean the pulse train and one of: 1) count the pulses of the pulse train; and 2) monitor the pulse train for a missing pulse. The synchronization circuitry (70) is further configured to, in response to counting a predetermined number of pulses or detecting the missing pulse, extract a jitter clean pulse from the pulse train to generate a jitter clean sync/reset pulse. The system (10) further includes an internal clock (64) which receives the jitter clean sync/reset pulse.Type: GrantFiled: February 25, 2013Date of Patent: April 26, 2016Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Bjoern Weissler, Pierre Klaus Gebhardt
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Publication number: 20160084974Abstract: The invention concerns an evaluation apparatus (50) for evaluating gamma radiation events detected by a gamma camera (10) and identifying valid gamma radiation events, said (gamma camera (10) including a scintillator (12) for emitting scintillation photons (42) at photo conversion positions (44) in the scintillator (12) in response to incident gamma rays (22) and resulting gamma radiation events and a position-sensitive photodetector(14) for detecting emitted scintillation photons (42) and obtaining therefrom a spatial signal distribution (24). The invention further concerns a calibration apparatus (56) for in-situ calibrating a position-sensitive photodetector (14) of a gamma camera (10) for the detection of gamma radiation events.Type: ApplicationFiled: April 30, 2014Publication date: March 24, 2016Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Christoph Werner LERCHE, Sarah LODOMEZ, Volkmar SCHULZ, Bjoern WEISSLER
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Publication number: 20160045112Abstract: The present invention relates to a method and a system for reducing interference between a non-MR imaging system (e.g. a PET imaging scanner) and an MR imaging system. The method comprises receiving at least a signal indicative of the MR RF signal detection period, and in response to the received signal, setting the state of at least a portion of the non-MR imaging system to an inactive state during at least a portion of the MR RF signal detection period.Type: ApplicationFiled: October 28, 2013Publication date: February 18, 2016Inventors: Bjoern WEISSLER, Volkmar SCHULZ, Pierre Klaus GEBHARDT, Peter Michael Jakob DUEPPENBECKER, Christoph Werner LERCHE
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Publication number: 20150014545Abstract: A detector module (50) for a positron emission tomography (PET) system (10) includes an optical transceiver (66) receiving an optical data stream from a PET processing system (48). The data stream includes a pulse train carrying a command to generate sync/reset pulses. The system (10) further includes synchronization circuitry (70) configured to simultaneously jitter clean the pulse train and one of: 1) count the pulses of the pulse train; and 2) monitor the pulse train for a missing pulse. The synchronization circuitry (70) is further configured to, in response to counting a predetermined number of pulses or detecting the missing pulse, extract a jitter clean pulse from the pulse train to generate a jitter clean sync/reset pulse. The system (10) further includes an internal clock (64) which receives the jitter clean sync/reset pulse.Type: ApplicationFiled: February 25, 2013Publication date: January 15, 2015Inventors: Bjoern Weissler, Pierre Klaus Gebhardt
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Publication number: 20150002150Abstract: The invention relates to a data detection device for use in combination with a magnetic resonance imaging (MRI) apparatus. A magnetic field detection unit (34) serves to detect a temporally varying magnetic field generated by the MRI apparatus, and a timestamping unit (35) generates magnetic field detection timestamps in dependence of the detected temporally varying magnetic field. This allows determining a temporal relation to acquired MRI data.Type: ApplicationFiled: February 6, 2013Publication date: January 1, 2015Inventors: Bjoern Weissler, Manfred Bruno Zinke
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Publication number: 20140312238Abstract: A PET or SPECT radiation detector module (50) includes an array of detectors (54, 58) and their associated processing circuitry are connected by a flexible cable having releasable connectors. A method of mounting and dismounting includes mounting a radiation detector array in a support structure in a diagnostic scanner, connecting one end of a flexible connector to the detector array, and connecting the other end of the flexible connector to its associated circuitry.Type: ApplicationFiled: December 19, 2012Publication date: October 23, 2014Inventors: Jinling Liu, Bjoern Weissler, Steven R. Martin, Volkmar Schulz, Pierre Klaus Gebhardt, Peter Michael Jakob Dueppernbecker, Wolfgang Renz
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Patent number: 8866480Abstract: The invention relates to a nuclear magnetic resonance imaging apparatus comprising: a main magnet (122) adapted for generating a main magnetic field; at least one radio frequency receiver coil unit (144) for acquiring magnetic resonance signals in a receiver coil radio frequency band (202) from an examined object (124); means (140) for inductively (wirelessly) supplying electric power to an electric component of the apparatus, wherein the electric component is adapted to be powered by inductively supplied electric power, wherein the power transfer frequency (200) and the higher-harmonics (206) of the power transfer frequency (200) for inductively supplying the electric power are located outside the receiver coil radio frequency band (202).Type: GrantFiled: June 15, 2009Date of Patent: October 21, 2014Assignee: Koninklijke Philips N.V.Inventors: Eberhard Waffenschmidt, Achim Hilgers, Lambertus De Vries, Bjoern Weissler, Derk Reefman, Marinus Johannes Adrianus Maria Van Helvoort, Pieter Gerrit Blanden
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Patent number: 8547100Abstract: An imaging system comprises: a magnetic resonance scanner (30) having a cylindrical bore (36) defining a cylinder axis (DA), the magnetic resonance scanner having a gradient coil (10, 10?) defining an isocenter (64) within the bore and an isoplane (66) passing through the isocenter and oriented transverse to the cylinder axis; a ring of radiation detectors (60a, 60b, 60?) arranged concentric with the cylindrical bore and configured to detect radiation emanating from within the bore; and a generally annular electronic circuit board (62, 62?) arranged concentric with the cylindrical bore and centered on the isoplane, the generally annular electronic circuit board operatively connected with the ring of radiation detectors to generate electrical signals indicative of detection of radiation by the ring of radiation detectors.Type: GrantFiled: February 2, 2009Date of Patent: October 1, 2013Assignee: Koninklijke Philips N.V.Inventors: Torsten J. Solf, Volkmar Schulz, Bjoern Weissler
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Patent number: 8378677Abstract: In a hybrid PET-MR system, PET detector elements (30) are added in the bore (14), in close proximity to the gradient coils (16). Fluid coolant is supplied to transfer heat from the PET detector elements (30). Thermal insulation (80) insulates the fluid coolant and the PET detector elements (30) from the gradient coils (16). In some embodiments, a first coolant path (90) is in thermal communication with the electronics, a second coolant path (92) is in thermal communication with the light detectors, and a thermal barrier (94, 96) is arranged between the first and second coolant paths such that the first and second coolant paths can be at different temperatures (Te, Td). In some embodiments a sealed heat pipe (110) is in thermal communication with a heat sink such that working fluid in the heat pipe undergoes vaporization/condensation cycling to transfer heat from the detector elements to the heat sink.Type: GrantFiled: June 23, 2008Date of Patent: February 19, 2013Assignee: Koninklijke Philips Electronics N.V.Inventors: Michael A. Morich, Gordon D. Demeester, Jerome J. Griesmer, Torsten J. Solf, Volkmar Schulz, Bjoern Weissler
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Publication number: 20110084694Abstract: The invention relates to a nuclear magnetic resonance imaging apparatus comprising: a main magnet (122) adapted for generating a main magnetic field; at least one radio frequency receiver coil unit (144) for acquiring magnetic resonance signals in a receiver coil radio frequency band (202) from an examined object (124); means (140) for inductively (wirelessly) supplying electric power to an electric component of the apparatus, wherein the electric component is adapted to be powered by inductively supplied electric power, wherein the power transfer frequency (200) and the higher-harmonics (206) of the power transfer frequency (200) for inductively supplying the electric power are located outside the receiver coil radio frequency band (202).Type: ApplicationFiled: June 15, 2009Publication date: April 14, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Eberhard Waffenschmidt, Achim Hilgers, Lambertus De Vries, Bjoern Weissler, Derk Reefman, Marinus Johannes Adrianus Maria Van Helvoort, Pieter Gerrit Blanden
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Publication number: 20110018541Abstract: An imaging system comprises: a magnetic resonance scanner (30) having a cylindrical bore (36) defining a cylinder axis (DA), the magnetic resonance scanner having a gradient coil (10, 10?) defining an isocenter (64) within the bore and an isoplane (66) passing through the isocenter and oriented transverse to the cylinder axis; a ring of radiation detectors (60a, 60b, 60?) arranged concentric with the cylindrical bore and configured to detect radiation emanating from within the bore; and a generally annular electronic circuit board (62, 62?) arranged concentric with the cylindrical bore and centered on the isoplane, the generally annular electronic circuit board operatively connected with the ring of radiation detectors to generate electrical signals indicative of detection of radiation by the ring of radiation detectors.Type: ApplicationFiled: February 2, 2009Publication date: January 27, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Torsten J. Solf, Volkmar Schulz, Bjoern Weissler
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Publication number: 20100188082Abstract: In a hybrid PET-MR system, PET detector elements (30) are added in the bore (14), in close proximity to the gradient coils (16). Fluid coolant is supplied to transfer heat from the PET detector elements (30). Thermal insulation (80) insulates the fluid coolant and the PET detector elements (30) from the gradient coils (16). In some embodiments, a first coolant path (90) is in thermal communication with the electronics, a second coolant path (92) is in thermal communication with the light detectors, and a thermal barrier (94, 96) is arranged between the first and second coolant paths such that the first and second coolant paths can be at different temperatures (Te, Td). In some embodiments a sealed heat pipe (110) is in thermal communication with a heat sink such that working fluid in the heat pipe undergoes vaporization/condensation cycling to transfer heat from the detector elements to the heat sink.Type: ApplicationFiled: June 23, 2008Publication date: July 29, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Michael A. MORICH, Gordon D. DEMEESTER, Jerome J. GRIESMER, Torsten J. SOLF, Volkmar SCHULZ, Bjoern WEISSLER