IT8720631A0 - Metodo per ricostruire oggetti da analisi ad angolo limitanto in tomografia computerizzata. - Google Patents

Metodo per ricostruire oggetti da analisi ad angolo limitanto in tomografia computerizzata.

Info

Publication number
IT8720631A0
IT8720631A0 IT8720631A IT2063187A IT8720631A0 IT 8720631 A0 IT8720631 A0 IT 8720631A0 IT 8720631 A IT8720631 A IT 8720631A IT 2063187 A IT2063187 A IT 2063187A IT 8720631 A0 IT8720631 A0 IT 8720631A0
Authority
IT
Italy
Prior art keywords
computerized tomography
limited angle
angle analysis
reconstructing objects
reconstructing
Prior art date
Application number
IT8720631A
Other languages
English (en)
Other versions
IT1204649B (it
Inventor
Kwok Cheong Tam
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IT8720631A0 publication Critical patent/IT8720631A0/it
Application granted granted Critical
Publication of IT1204649B publication Critical patent/IT1204649B/it

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/18—Investigating the presence of flaws defects or foreign matter
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/436—Limited angle

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Analysis (AREA)
  • Algebra (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Optimization (AREA)
  • Toxicology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
IT20631/87A 1986-06-23 1987-05-22 Metodo per ricostruire oggetti da analisi ad angolo limita to in tomografia computerizzata IT1204649B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87708386A 1986-06-23 1986-06-23

Publications (2)

Publication Number Publication Date
IT8720631A0 true IT8720631A0 (it) 1987-05-22
IT1204649B IT1204649B (it) 1989-03-10

Family

ID=25369217

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20631/87A IT1204649B (it) 1986-06-23 1987-05-22 Metodo per ricostruire oggetti da analisi ad angolo limita to in tomografia computerizzata

Country Status (5)

Country Link
JP (1) JPS6325538A (it)
DE (1) DE3716988A1 (it)
FR (1) FR2600442A1 (it)
GB (1) GB2192120B (it)
IT (1) IT1204649B (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888693A (en) * 1987-04-01 1989-12-19 General Electric Company Method to obtain object boundary information in limited-angle computerized tomography
US4920491A (en) * 1988-05-16 1990-04-24 General Electric Company Enhancement of image quality by utilization of a priori information
US5053958A (en) * 1988-06-06 1991-10-01 General Electric Company Method to reduce image reconstruction time in limited-angle ct systems including using initial reconstruction valves for measured projection data during each iteration
US4969110A (en) * 1988-08-01 1990-11-06 General Electric Company Method of using a priori information in computerized tomography
JP2592046Y2 (ja) * 1991-01-21 1999-03-17 株式会社ケンウッド スペクトラムアナライザ
US6101236A (en) * 1998-10-02 2000-08-08 University Of Iowa Research Foundation Iterative method and apparatus for x-ray computed tomographic fluoroscopy
US7310403B2 (en) * 2006-03-20 2007-12-18 Moshe Ein-Gal Target reconstruction
CN101071111B (zh) 2006-05-08 2011-05-11 清华大学 一种多视角航空集装箱安全检查系统及方法
JP5011859B2 (ja) * 2006-07-13 2012-08-29 株式会社島津製作所 放射線断層撮像装置
WO2008130325A1 (en) * 2007-04-18 2008-10-30 Agency For Science, Technology & Research Method and apparatus for reorientated reconstruction of computed tomography images of planar objects
EP2922028A1 (en) * 2014-03-17 2015-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Exploiting residual projection data and reference data for processing data produced by imaging modality
EP3338082B1 (en) * 2015-08-19 2024-04-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Ultrasonic measurements for reconstructing an image of an object
EP3574475A1 (en) * 2017-01-09 2019-12-04 Carestream Dental Technology Topco Limited System for the detection and display of metal obscured regions in cone beam ct

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509075A (en) * 1981-06-15 1985-04-02 Oxbridge, Inc. Automatic optical inspection apparatus
US4506327A (en) * 1981-11-23 1985-03-19 General Electric Company Limited-angle imaging using multiple energy scanning
US4672650A (en) * 1984-02-16 1987-06-09 Kabushiki Kaisha Toshiba Tomographic testing apparatus

Also Published As

Publication number Publication date
DE3716988A1 (de) 1988-01-14
FR2600442A1 (fr) 1987-12-24
GB8714563D0 (en) 1987-07-29
GB2192120A (en) 1987-12-31
GB2192120B (en) 1990-03-28
JPS6325538A (ja) 1988-02-03
IT1204649B (it) 1989-03-10

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