Patents by Inventor Paulus Cornelius Hendrikus Adrianus Haans
Paulus Cornelius Hendrikus Adrianus Haans 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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MRI involving a distributed sensor to monitor the temperature and/or strain of coil cables and traps
Patent number: 10267875Abstract: A magnetic resonance (MR) system 10 includes at least one cable (30, 32, 34) that has at least one optic fiber component (31C, 31E, 33B, 35B) and an optical monitoring unit (37) in communication with the at least one optic fiber component (31C, 31E, 33B, 35B). The optical monitoring unit (37) is configured to determine temperatures at each of a plurality of positions along the at least one optic fiber component (31C, 31E, 33B, 35B). The optical monitoring unit (37) is further configured to halt an operation of the MR system (10) in response to at least one determined temperature. In accordance with the invention, the temperature of one or more cable traps forming part of the cable can be monitored and a faulty cable trap can be detected.Type: GrantFiled: October 31, 2013Date of Patent: April 23, 2019Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Laurens Cornelis Van Leeuwen, Johan Mathieu Alfons Helsen, Paulus Cornelius Hendrikus Adrianus Haans -
Publication number: 20160291103Abstract: A magnetic resonance (MR) system 10 includes at least one cable (30, 32, 34) that has at least one optic fiber component (31C, 31E, 33B, 35B) and an optical monitoring unit (37) in communication with the at least one optic fiber component (31C, 31E, 33B, 35B). The optical monitoring unit (37) is configured to determine temperatures at each of a plurality of positions along the at least one optic fiber component (31C, 31E, 33B, 35B). The optical monitoring unit (37) is further configured to halt an operation of the MR system (10) in response to at least one determined temperature. In accordance with the invention, the temperature of one or more cable traps forming part of the cable can be monitored and a faulty cable trap can be detected.Type: ApplicationFiled: October 31, 2013Publication date: October 6, 2016Inventors: LAURENS CORNELIS VAN LEEUWEN, JOHAN MATHIEU ALFONS HELSEN, PAULUS CORNELIUS HENDRIKUS ADRIANUS HAANS
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Patent number: 8324900Abstract: It is proposed herein to improve the specifications of a low-noise amplifier (LNA) by integrating it in a chip. In order to cover a range of operating frequencies using a single chip, the integrated-circuit amplifier proposed herein comprises an input port configured to receive a magnetic resonance (MR) signal from a radio-frequency (RF) coil, one or more LNAs configured to amplify the received MR signal, and an output port configured to output the amplified MR signal from the one or more LNAs. The operating frequency of the RF coil depends on the field strength. The matching circuit, if present, needs to be tuned to operate at the operating frequency of the RF coil, and depends on the component values in the loop, thus on loop size. In contrast, the proposed integrated-circuit amplifier is capable of directly connecting to RF coils with different loop sizes, without the need for a matching circuit.Type: GrantFiled: May 30, 2008Date of Patent: December 4, 2012Assignee: Koninklijke Philips Electronic N.V.Inventors: Marinus Johannes Adrianus Maria Helvoort, Paulus Cornelius Hendrikus Adrianus Haans, Leo De Vreede
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Patent number: 7777490Abstract: A radio frequency antenna comprising a resonant pickup circuit (102) arranged to pick up a magnetic resonance signal, an analog-to-digital converter (105) arranged to convert the magnetic resonance signal to digital data, and a frequency converter arranged to convert a primary band of frequencies of the digital data. By upshifting the frequency of the transmitted bit-stream, it is possible to RF-trap the transmission channel (109) by simple high-pass filtering techniques. In case the transmitted bit pattern has frequency components that approach the resonance frequency, an encoding technique like Manchester encoding can be used to eliminate unwanted signals.Type: GrantFiled: October 10, 2006Date of Patent: August 17, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Paulus Cornelius Hendrikus Adrianus Haans, Marc Paul Saes, Gosta Jakob Ehnholm
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Publication number: 20100164498Abstract: It is proposed herein to improve the specifications of a low-noise amplifier (LNA) by integrating it in a chip. In order to cover a range of operating frequencies using a single chip, the integrated-circuit amplifier proposed herein comprises an input port configured to receive a magnetic resonance (MR) signal from a radio-frequency (RF) coil, one or more LNAs configured to amplify the received MR signal, and an output port configured to output the amplified MR signal from the one or more LNAs. The operating frequency of the RF coil depends on the field strength, The matching circuit, if present, needs to be tuned to operate at the operating frequency of the RF coil, and depends on the component values in the loop, thus on loop size. In contrast, the proposed integrated-circuit amplifier is capable of directly connecting to RF coils with different loop sizes, without the need for a matching circuit.Type: ApplicationFiled: May 30, 2008Publication date: July 1, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Marinus Johannes Adrianus Maria Helvoort, Paulus Cornelius Hendrikus Adrianus Haans, Leo De Vreede
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Patent number: 7746072Abstract: The present invention relates to a magnetic resonance imaging system, to a magnetic resonance imaging method for operating a magnetic resonance imaging system and to a computer program for operating a magnetic resonance imaging system.Type: GrantFiled: March 20, 2006Date of Patent: June 29, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Marinus Johannes Adrianus Maria Van Helvoort, Marc Paul Saes, Johan Samuel Van Den Brink, Robert Paul Kleihorst, Paulus Cornelius Hendrikus Adrianus Haans
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Publication number: 20100090699Abstract: A radio-frequency (RF) coil array for receiving magnetic resonance (MR) signals wherein the RF coil array (402) comprises at least one RF receive coil with an associated electronic circuit, a rechargeable electrical storage device arranged to supply electrical power to the associated electronic circuit, and a charging circuit arranged to charge the rechargeable electrical storage device, wherein the charging circuit includes a switching circuit (102SW1, 102SW2, 104SW1, 104SW2, 106SW1, 106SW2, 108SW1, 108SW2) configured to electrically isolate the charging circuit from the RF coil array at least when the RF receive coil is receiving MR signal. During a time period when the RF receive coil is not receiving MR signal and/or when another RF coil is not transmitting RF signals in the presence of the RF receive coil, the switching circuit switches the charging circuit to an ON state which enables the charging circuit to charge the rechargeable electrical storage device.Type: ApplicationFiled: December 20, 2007Publication date: April 15, 2010Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Paulus Cornelius Hendrikus Adrianus Haans, Marc Paul Saes
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Publication number: 20090121717Abstract: A radio frequency antenna comprising a resonant pickup circuit (102) arranged to pick up a magnetic resonance signal, an analog-to-digital converter (105) arranged to convert the magnetic resonance signal to digital data, and a frequency converter arranged to convert a primary band of frequencies of the digital data. By upshifting the frequency of the transmitted bit-stream, it is possible to RF-trap the transmission channel (109) by simple high-pass filtering techniques. In case the transmitted bit pattern has frequency components that approach the resonance frequency, an encoding technique like Manchester encoding can be used to eliminate unwanted signals.Type: ApplicationFiled: October 10, 2006Publication date: May 14, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Paulus Cornelius Hendrikus Adrianus Haans, Marc Paul Saes, Gosta Jakob Ehnholm
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Publication number: 20080191695Abstract: The present invention relates to a magnetic resonance imaging system, to a magnetic resonance imaging method for operating a magnetic resonance imaging system and to a computer program for operating a magnetic resonance imaging system.Type: ApplicationFiled: March 20, 2006Publication date: August 14, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Marinus Johannes Adrianus Maria Van Helvoort, Marc Paul Saes, Johan Samuel Van Den Brink, Robert Paul Kleihorst, Paulus Cornelius Hendrikus Adrianus Haans
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Patent number: 6870368Abstract: The proposed MRI apparatus provides a solution to the problem of a limited number of receiver channels. The main idea is to make use of the imaging parameters when selecting and/or combining the RF signals of at least two RF coils into separate receiver channels. Such an imaging parameter may be, for example, the phase encoding direction.Type: GrantFiled: February 5, 2002Date of Patent: March 22, 2005Assignee: Koninklijke Philips Electronics, N.V.Inventors: Frederik Visser, Paulus Cornelius Hendrikus Adrianus Haans, Johan Samuel Van Den Brink
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Patent number: 6759846Abstract: The invention relates to an MR coil module for use in an MR imaging system for receiving and/or transmitting RF signals.Type: GrantFiled: September 13, 2002Date of Patent: July 6, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Marinus Johannes Adrianus Maria Van Helvoort, Johan Samuel Van Den Brink, Diana Maria Francisca Geraats, Paulus Cornelius Hendrikus Adrianus Haans, Cornelis Leonardus Gerardus Ham
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Publication number: 20030057944Abstract: The invention relates to an MR coil module for use in an MR imaging system for receiving and/or transmitting RF signals.Type: ApplicationFiled: September 13, 2002Publication date: March 27, 2003Inventors: Marinus Johannes Adrianus Maria Van Helvoort, Johan Samuel Van Den Brink, Diana Maria Francisca Geraats, Paulus Cornelius Hendrikus Adrianus Haans, Cornelis Leonardus Gerardus Ham
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Publication number: 20020125888Abstract: The proposed MRI apparatus provides a solution to the problem of a limited number of receiver channels. The main idea is to make use of the imaging parameters when selecting and/or combining the RF signals of at least two RF coils into separate receiver channels. Such an imaging parameter may be, for example, the phase encoding direction.Type: ApplicationFiled: February 4, 2002Publication date: September 12, 2002Inventors: Frederik Visser, Paulus Cornelius Hendrikus Adrianus Haans, Johan Samuel Van Den Brink