WO2002050569A3 - System and method of aligning scintillator crystalline structures for computed tomography imaging - Google Patents

System and method of aligning scintillator crystalline structures for computed tomography imaging Download PDF

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Publication number
WO2002050569A3
WO2002050569A3 PCT/US2001/048810 US0148810W WO0250569A3 WO 2002050569 A3 WO2002050569 A3 WO 2002050569A3 US 0148810 W US0148810 W US 0148810W WO 0250569 A3 WO0250569 A3 WO 0250569A3
Authority
WO
WIPO (PCT)
Prior art keywords
crystallites
computed tomography
crystalline structures
tomography imaging
scintillator
Prior art date
Application number
PCT/US2001/048810
Other languages
French (fr)
Other versions
WO2002050569A2 (en
Inventor
David Michael Hoffman
Haochuan Jiang
Original Assignee
Ge Med Sys Global Tech Co Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ge Med Sys Global Tech Co Llc filed Critical Ge Med Sys Global Tech Co Llc
Priority to JP2002551612A priority Critical patent/JP4173001B2/en
Priority to EP01985580A priority patent/EP1346088A2/en
Priority to IL15081101A priority patent/IL150811A0/en
Publication of WO2002050569A2 publication Critical patent/WO2002050569A2/en
Priority to IL150811A priority patent/IL150811A/en
Publication of WO2002050569A3 publication Critical patent/WO2002050569A3/en
Priority to IL175644A priority patent/IL175644A0/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C30—CRYSTAL GROWTH
    • C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
    • C30B30/00—Production of single crystals or homogeneous polycrystalline material with defined structure characterised by the action of electric or magnetic fields, wave energy or other specific physical conditions
    • C30B30/04—Production of single crystals or homogeneous polycrystalline material with defined structure characterised by the action of electric or magnetic fields, wave energy or other specific physical conditions using magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0415—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the pressure of the material during or after filling of the mould, e.g. by local venting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3492—Expanding without a foaming agent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3418—Loud speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Multimedia (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Measurement Of Radiation (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Conversion Of X-Rays Into Visible Images (AREA)

Abstract

The present invention discloses a method of aligning scintillator crystalline structures (90) for computed tomography imaging and a system of use. Crystal seeds are deposited inside a glass melt and are then grown to form a plurality of layer crystallites (90). While growing the crystallites (90), a field is applied to align each crystallite structure (90) in a uniform orientation. As a result, the crystallites (90) are configured to reduce light scattering and improve the overall efficiency of the CT system. A CT system is disclosed implementing a scintillator array (56) having a plurality of scintillators (57), each scintillator (57) being formed of a plurality of uniformly aligned crystallites (90). Each crystallite (90) includes a receiving surface (92) and an exiting surface (94) configured perpendicular to an x-ray beam (16). Further, the receiving surface (92) and the exiting surface (94) are connected by a plurality of surface walls (96) arranged parallel to the x-ray beam (16).
PCT/US2001/048810 2000-12-19 2001-12-18 System and method of aligning scintillator crystalline structures for computed tomography imaging WO2002050569A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2002551612A JP4173001B2 (en) 2000-12-19 2001-12-18 System and method for aligning scintillator crystal structures for creating computer tomographic images
EP01985580A EP1346088A2 (en) 2000-12-19 2001-12-18 System and method of aligning scintillator crystalline structures for computed tomography imaging
IL15081101A IL150811A0 (en) 2000-12-19 2001-12-18 System and method of aligning scintillator crystalline structures for computed tomography imaging
IL150811A IL150811A (en) 2000-12-19 2002-07-18 System and method of aligning scintillator crystalline structures for computed tomography imaging
IL175644A IL175644A0 (en) 2000-12-19 2006-05-16 System and method of aligning scintillator crystalline structures for computed tomography imaging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/681,067 US6480563B2 (en) 2000-12-19 2000-12-19 System and method of aligning scintillator crystalline structures for computed tomography imaging
US09/681,067 2000-12-19

Publications (2)

Publication Number Publication Date
WO2002050569A2 WO2002050569A2 (en) 2002-06-27
WO2002050569A3 true WO2002050569A3 (en) 2002-09-06

Family

ID=24733672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/048810 WO2002050569A2 (en) 2000-12-19 2001-12-18 System and method of aligning scintillator crystalline structures for computed tomography imaging

Country Status (5)

Country Link
US (3) US6480563B2 (en)
EP (1) EP1346088A2 (en)
JP (1) JP4173001B2 (en)
IL (3) IL150811A0 (en)
WO (1) WO2002050569A2 (en)

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US6933504B2 (en) 2003-03-12 2005-08-23 General Electric Company CT detector having a segmented optical coupler and method of manufacturing same
US6859514B2 (en) * 2003-03-14 2005-02-22 Ge Medical Systems Global Technology Company Llc CT detector array with uniform cross-talk
US7655915B2 (en) * 2003-05-13 2010-02-02 General Electric Company Collimator assembly for computed tomography system
US7233640B2 (en) * 2003-11-26 2007-06-19 General Electric Company CT detector having an optical mask layer
US7308074B2 (en) * 2003-12-11 2007-12-11 General Electric Company Multi-layer reflector for CT detector
US7187748B2 (en) * 2003-12-30 2007-03-06 Ge Medical Systems Global Technology Company, Llc Multidetector CT imaging method and apparatus with reducing radiation scattering
US20070131478A1 (en) * 2004-02-18 2007-06-14 Masatoshi Okazaki Speaker, speaker-use diaphragm, dust cap, production methods and production devices for them
US6953935B1 (en) * 2004-05-11 2005-10-11 General Electric Company CT detector fabrication process
US7092481B2 (en) * 2004-05-19 2006-08-15 General Electric Company Direct conversion energy discriminating CT detector
US7282713B2 (en) * 2004-06-10 2007-10-16 General Electric Company Compositions and methods for scintillator arrays
CN101147422B (en) * 2005-03-10 2012-11-21 楼氏电子亚洲有限公司 Membrane with high resistance against buckling and/or crinkling
US20080212800A1 (en) * 2005-04-20 2008-09-04 Yoshimichi Kajihara Diaphragm for Speaker, Method for Producing Same, Speaker Using Such Diaphragm, and Apparatus Using Such Speaker
JP2007049471A (en) * 2005-08-10 2007-02-22 Sony Corp Loudspeaker diaphragm
US20070183621A1 (en) * 2006-02-03 2007-08-09 Chui-Che Chen Diaphragm for tweeter
US7508909B2 (en) * 2006-04-24 2009-03-24 Battelle Energy Alliance, Llc Apparatus and method for inspecting a sealed container
JP2007318405A (en) * 2006-05-25 2007-12-06 Pioneer Electronic Corp Diaphragm for electroacoustic transducer
US7869559B2 (en) * 2006-10-19 2011-01-11 General Electric Company X-ray detector methods and apparatus
CN202873037U (en) * 2012-09-26 2013-04-10 瑞声光电科技(常州)有限公司 Composite diaphragm and loudspeaker applying the same
PT2982504T (en) 2013-04-02 2019-07-10 Toray Industries Sandwich laminate, sandwich structure and unified molded product using same and processes for producing both
US9113250B2 (en) * 2013-05-29 2015-08-18 Tang Band Industries Co., Ltd. Speaker with diaphragm arrangement
US9769570B2 (en) * 2015-03-31 2017-09-19 Bose Corporation Acoustic diaphragm
CN105430589B (en) * 2015-10-30 2018-11-23 歌尔股份有限公司 A kind of sound-absorbing component and preparation method thereof
CN111742103B (en) 2018-12-13 2023-04-04 K-普拉希特株式会社 Web, stampable sheet and expansion-molded article

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Also Published As

Publication number Publication date
IL175644A0 (en) 2006-09-05
IL150811A0 (en) 2003-02-12
WO2002050569A2 (en) 2002-06-27
US20020196897A1 (en) 2002-12-26
US6704391B2 (en) 2004-03-09
EP1346088A2 (en) 2003-09-24
JP2004516217A (en) 2004-06-03
US20020075993A1 (en) 2002-06-20
JP4173001B2 (en) 2008-10-29
US20020100294A1 (en) 2002-08-01
US7092544B2 (en) 2006-08-15
US6480563B2 (en) 2002-11-12
IL150811A (en) 2007-06-03

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