Patents by Inventor Rodney Mattson
Rodney Mattson 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: 10591616Abstract: A one-dimensional multi-element photo detector includes a photodiode array with a first upper row of photodiode pixels and a second lower row of photodiode pixels. The photodiode array is part of the photo detector. A scintillator array includes a first upper row and a second lower row of scintillator pixels. The first upper and second lower rows of scintillator pixels are respectively optically coupled to the first upper and second lower rows of photodiode pixels. The photo detector also includes readout electronics, which are also part of the photo detector. Electrical traces interconnect the photodiode pixels and the readout electronics.Type: GrantFiled: March 3, 2015Date of Patent: March 17, 2020Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Rodney A. Mattson, Randall P. Luhta, Marc A. Chappo
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Publication number: 20150177390Abstract: A one-dimensional multi-element photo detector includes a photodiode array with a first upper row of photodiode pixels and a second lower row of photodiode pixels. The photodiode array is part of the photo detector. A scintillator array includes a first upper row and a second lower row of scintillator pixels. The first upper and second lower rows of scintillator pixels are respectively optically coupled to the first upper and second lower rows of photodiode pixels. The photo detector also includes readout electronics, which are also part of the photo detector. Electrical traces interconnect the photodiode pixels and the readout electronics.Type: ApplicationFiled: March 3, 2015Publication date: June 25, 2015Inventors: Rodney A. MATTSON, Randall P. LUHTA, Marc A. CHAPPO
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Patent number: 9000382Abstract: A one-dimensional multi-element photo detector (120) includes a photodiode array (122) with a first upper row of photodiode pixels and a second lower row of photodiode pixels. The photodiode array (122) is part of the photo detector (120). A scintillator array (126) includes a first upper row and a second lower row of scintillator pixels. The first upper and second lower rows of scintillator pixels are respectively optically coupled to the first upper and second lower rows of photodiode pixels. The photo detector (120) also includes readout electronics (124), which are also part of the photo detector (120). Electrical traces (512) interconnect the photodiode pixels and the readout electronics (124).Type: GrantFiled: October 29, 2009Date of Patent: April 7, 2015Assignee: Koninklijke Philips N.V.Inventors: Rodney A. Mattson, Randall P. Luhta, Marc A. Chappo
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Patent number: 8766199Abstract: A detector tile (116) of an imaging system (100) includes a photosensor array (204) and electronics (208) electrically coupled to the photosensor array (204), wherein the electronics includes a dose determiner (402) that determines a deposited dose for the detector tile (116) and generates a signal indicative thereof. In one non-limiting instance, this signal is utilized to correct parameters such as gain and thermal coefficients, which may vary with radiation dose.Type: GrantFiled: November 18, 2010Date of Patent: July 1, 2014Assignee: Koninklijke Philips N.V.Inventors: Marc A. Chappo, Randall P. Luhta, Rodney A. Mattson
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Patent number: 8710448Abstract: A radiation detector module (22) particularly well suited for use in computed tomography (CT) applications includes a scintillator (200), a photodetector array (202), and signal processing electronics (205). The photodetector array (202) includes a semiconductor substrate (208) having a plurality of photodetectors and metalization (210) fabricated on non-illuminated side of the substrate (208). The metalization routes electrical signals between the photodetectors and the signal processing electronics (205) and between the signal processing electronics (205) and an electrical connector (209).Type: GrantFiled: March 8, 2007Date of Patent: April 29, 2014Assignee: Koninklijke Philips N.V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris J. Vrettos
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Patent number: 8532251Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region (106) and a detection system (114) that detects radiation that traverses the examination region (106) and generates a signal indicative thereof. The detection system (114) includes a first detector array (1141-114N) and a second detector array (1141-114N). The first and second detector arrays (1141-114N) are separately distinct detector arrays and at least one of the detector arrays (1141-114N) is moveable with respect to the radiation beam. A reconstructor (116) reconstructs the signal and generates volumetric image data indicative thereof.Type: GrantFiled: April 15, 2010Date of Patent: September 10, 2013Assignee: Koninklijke Philips N.V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris John Vrettos
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Patent number: 8525119Abstract: A radiation sensitive detector array includes a plurality of detector modules (118) extending along a z-axis direction and aligned along an x-axis direction with respect to the imaging system (100). At least one of the detector modules (118) includes a module backbone (124) and at least one detector tile (122). The at least one detector tile (122) is coupled to the module backbone (124) through a non-threaded fastener (142). The at least one detector tile (122) includes a two-dimensional detector (126) and a two-dimensional anti-scatter grid (128) that is focused at a focal spot (112) of an imaging system (100).Type: GrantFiled: April 14, 2010Date of Patent: September 3, 2013Assignee: Koninklijke Philips N. V.Inventors: Randall P. Luhta, Rodney A. Mattson, Brian E. Harwood
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Publication number: 20120313000Abstract: A detector tile (116) of an imaging system (100) includes a photosensor array (204) and electronics (208) electrically coupled to the photosensor array (204), wherein the electronics includes a dose determiner (402) that determines a deposited dose for the detector tile (116) and generates a signal indicative thereof. In one non-limiting instance, this signal is utilized to correct parameters such as gain and thermal coefficients, which may vary with radiation dose.Type: ApplicationFiled: November 18, 2010Publication date: December 13, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Marc A. Chappo, Randall P. Luhta, Rodney A. Mattson
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Publication number: 20120057670Abstract: An imaging system (100) includes a radiation source (108) that emits radiation that traverses an examination region (106) and a detection system (114) that detects radiation that traverses the examination region (106) and generates a signal indicative thereof. The detection system (114) includes a first detector array (1141-114N) and a second detector array (1141-114N). The first and second detector arrays (1141-114N) are separately distinct detector arrays and at least one of the detector arrays (1141-114N) is moveable with respect to the radiation beam. A reconstructor (116) reconstructs the signal and generates volumetric image data indicative thereof.Type: ApplicationFiled: April 15, 2010Publication date: March 8, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris John Vrettos
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Publication number: 20120049074Abstract: A radiation sensitive detector array includes a plurality of detector modules (118) extending along a z-axis direction and aligned along an x-axis direction with respect to the imaging system (100). At least one of the detector modules (118) includes a module backbone (124) and at least one detector tile (122). The at least one detector tile (122) is coupled to the module backbone (124) through a non-threaded fastener (142). The at least one detector tile (122) includes a two-dimensional detector (126) and a two-dimensional anti-scatter grid (128) that is focused at a focal spot (112) of an imaging system (100).Type: ApplicationFiled: April 14, 2010Publication date: March 1, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Randall P. Luhta, Rodney A. Mattson, Brian E. Harwood
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Publication number: 20110210256Abstract: A one-dimensional multi-element photo detector (120) includes a photodiode array (122) with a first upper row of photodiode pixels and a second lower row of photodiode pixels. The photodiode array (122) is part of the photo detector (120). A scintillator array (126) includes a first upper row and a second lower row of scintillator pixels. The first upper and second lower rows of scintillator pixels are respectively optically coupled to the first upper and second lower rows of photodiode pixels. The photo detector (120) also includes readout electronics (124), which are also part of the photo detector (120). Electrical traces (512) interconnect the photodiode pixels and the readout electronics (124).Type: ApplicationFiled: October 29, 2009Publication date: September 1, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Rodney A. Mattson, Randall P. Luhta, Marc A. Chappo
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Patent number: 7873144Abstract: A radiographic imaging apparatus (10) comprises a primary radiation source (14) which projects a beam of radiation into an examination region (16). A detector (18) converts detected radiation passing through the examination region (16) into electrical detector signals representative of the detected radiation. The detector (18) has at least one temporally changing characteristic such as an offset B(t) or gain A(t). A grid pulse means (64) turns the primary radiation source (14) ON and OFF at a rate between 1000 and 5000 pulses per second, such that at least the offset B(t) is re-measured between 1000 and 5000 times per second and corrected a plurality of times during generation of the detector signals. The gain A(t) is measured by pulsing a second pulsed source (86, 100, 138) of a constant intensity (XRef) with a second pulse means (88). The gain A(t) is re-measured and corrected a plurality of times per second during generation of the detector signals.Type: GrantFiled: December 5, 2005Date of Patent: January 18, 2011Assignee: Koninklijke Philips Electronics N.V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris J. Vrettos
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Patent number: 7822173Abstract: An ionizing radiation detector module (22) includes a detector array (200), a memory (202), signal processing electronics (208), a communications interface (210), and a connector (212). The memory contains detector performance parameters (204) and detector correction algorithms (206). The signal processing electronics (208) uses the detector performance parameters (204) to correct signals from the detector array (200) in accordance with the detector correction algorithms (206).Type: GrantFiled: January 4, 2007Date of Patent: October 26, 2010Assignee: Koninklijke Philips Electronics N.V.Inventors: Rodney A. Mattson, Marc A. Chappo, Randall P. Luhta
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Publication number: 20090238330Abstract: A radiographic imaging apparatus (10) comprises a primary radiation source (14) which projects a beam of radiation into an examination region (16). A detector (18) converts detected radiation passing through the examination region (16) into electrical detector signals representative of the detected radiation. The detector (18) has at least one temporally changing characteristic such as an offset B(t) or gain A(t). A grid pulse means (64) turns the primary radiation source (14) ON and OFF at a rate between 1000 and 5000 pulses per second, such that at least the offset B(t) is re-measured between 1000 and 5000 times per second and corrected a plurality of times during generation of the detector signals. The gain A(t) is measured by pulsing a second pulsed source (86, 100, 138) of a constant intensity (XRef) with a second pulse means (88). The gain A(t) is re-measured and corrected a plurality of times per second during generation of the detector signals.Type: ApplicationFiled: December 5, 2005Publication date: September 24, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris J. Vrettos
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Patent number: 7573035Abstract: A radiation detector (24) for an imaging system includes a two-dimensional array (50) of nondeliquescent ceramic scintillating fibers or sheets (52). The scintillating fibers (52) are manufactured from a GOS ceramic material. Each scintillating fiber (52) has a width (d2) between 0.1 mm and 1 mm, a length (h2) between 0.1 mm and 2 mm and a height (h8) between 1 mm and 2 mm. Such scintillating fiber (52) has a height (h8) to cross-sectional dimension (d2, h2) ratio of approximately 10 to 1. The scintillating fibers (52) are held together by layers (86, 96) of a low index coating material. A two-dimensional array (32) of photodiodes (34) is positioned adjacent and in optical communication with the scintillating fibers (52) to convert the visible light into electrical signals. A grid (28) is disposed by the scintillating array (50). The grid (28) has the apertures (30) which correspond to a cross-section of the photodiodes (34) and determine a spatial resolution of the imaging system.Type: GrantFiled: October 12, 2005Date of Patent: August 11, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Simha Levene, Rodney A. Mattson, Ami Altman
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Patent number: 7564940Abstract: A radiation detector for a computed tomography scanner includes a plurality of radiation detector modules. Each detector module includes an anti-scatter module, at least one radiation absorbing mask and a detector subassembly module. The anti-scatter module includes radiation absorbing anti-scatter plates. The detector subassembly module includes a substrate and an array of detector elements. The radiation absorbing mask is a photoetched grid, formed of a radiation absorbing material and is positioned between the anti-scatter module and the detector elements of array. The strip of the grid, that is parallel to the anti-scatter plates, is wider than each anti-scatter plate. The detector module is aligned with a spatial focus by inserting the alignment pins into the alignment openings of the radiation absorbing mask and the alignment openings of the detector subassembly module.Type: GrantFiled: July 15, 2004Date of Patent: July 21, 2009Assignee: Koninklijke Philips Electronics N.V.Inventors: Rodney A. Mattson, William C. Brunnett
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Publication number: 20090121146Abstract: A radiation detector module (22) particularly well suited for use in computed tomography (CT) applications includes a scintillator (200), a photodetector array (202), and signal processing electronics (205). The photodetector array (202) includes a semiconductor substrate (208) having a plurality of photodetectors and metalization (210) fabricated on non-illuminated side of the substrate (208). The metalization routes electrical signals between the photodetectors and the signal processing electronics (205) and between the signal processing electronics (205) and an electrical connector (209).Type: ApplicationFiled: March 8, 2007Publication date: May 14, 2009Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Randall P. Luhta, Marc A. Chappo, Brian E. Harwood, Rodney A. Mattson, Chris John Vrettos
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Publication number: 20080298541Abstract: An ionizing radiation detector module (22) includes a detector array (200), a memory (202), signal processing electronics (208), a communications interface (210), and a connector (212). The memory contains detector performance parameters (204) and detector correction algorithms (206). The signal processing electronics (208) uses the detector performance parameters (204) to correct signals from the detector array (200) in accordance with the detector correction algorithms (206).Type: ApplicationFiled: January 4, 2007Publication date: December 4, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.Inventors: Rodney A. Mattson, Marc A. Chappo, Randall P. Luhta
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Patent number: 7379528Abstract: A radiation detector module includes a scintillator (62, 62?, 162, 262) arranged to receive penetrating radiation of a computed tomography apparatus (10). The scintillator produces optical radiation responsive to the penetrating radiation. A detector array (66, 66?, 166, 266) is arranged to convert the optical radiation into electric signals. Electronics (72, 72?, 172, 272) are arranged on a side of the detector array opposite from the scintillator in a path of the penetrating radiation. A radiation shield (86, 86?, 100, 100?, 100?, 186, 210, 210?, 286, 286?) is disposed between the detector array and the electronics to absorb the penetrating radiation that passes through the scintillator. The radiation shield includes openings (90, 90?) that communicate between the detector array and the electronics. Electrical feedthroughs (88, 88?, 102, 102?, 102?, 188, 212, 212?, 288, 288?) pass through the radiation shield openings and electrically connect the detector array and the electronics.Type: GrantFiled: December 17, 2003Date of Patent: May 27, 2008Assignee: Koninklijke Philips Electronics N.V.Inventors: Rodney A. Mattson, Randall P. Luhta, Marc A. Chappo
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Publication number: 20080063138Abstract: A radiation detector (24) for an imaging system includes a two-dimensional array (50) of nondeliquescent ceramic scintillating fibers or sheets (52). The scintillating fibers (52) are manufactured from a GOS ceramic material. Each scintillating fiber (52) has a width (d2) between 0.1 mm and 1 mm, a length (h2) between 0.1 mm and 2 mm and a height (h8) between 1 mm and 2 mm. Such scintillating fiber (52) has a height (h8) to cross-sectional dimension (d2, h2) ratio of approximately 10 to 1. The scintillating fibers (52) are held together by layers (86, 96) of a low index coating material. A two-dimensional array (32) of photodiodes (34) is positioned adjacent and in optical communication with the scintillating fibers (52) to convert the visible light into electrical signals. A grid (28) is disposed by the scintillating array (50). The grid (28) has the apertures (30) which correspond to a cross-section of the photodiodes (34) and determine a spatial resolution of the imaging system.Type: ApplicationFiled: October 12, 2005Publication date: March 13, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Simha Levene, Rodney Mattson, Ami Altman