CA1111575A - Apparatus and method for reconstructing data - Google Patents

Apparatus and method for reconstructing data

Info

Publication number
CA1111575A
CA1111575A CA281,098A CA281098A CA1111575A CA 1111575 A CA1111575 A CA 1111575A CA 281098 A CA281098 A CA 281098A CA 1111575 A CA1111575 A CA 1111575A
Authority
CA
Canada
Prior art keywords
radiation
detector
data
convolution
source
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA281,098A
Other languages
English (en)
French (fr)
Inventor
John M. Pavkovich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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
Priority claimed from US05/760,492 external-priority patent/US4149249A/en
Application filed by General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of CA1111575A publication Critical patent/CA1111575A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Mathematical Physics (AREA)
  • Pulmonology (AREA)
  • Mathematical Optimization (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Mathematical Analysis (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Algebra (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Pure & Applied Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Image Analysis (AREA)
  • Medical Treatment And Welfare Office Work (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
CA281,098A 1977-01-19 1977-06-21 Apparatus and method for reconstructing data Expired CA1111575A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US760,492 1977-01-19
US05/760,492 US4149249A (en) 1975-12-23 1977-01-19 Apparatus and method for reconstructing data

Publications (1)

Publication Number Publication Date
CA1111575A true CA1111575A (en) 1981-10-27

Family

ID=25059266

Family Applications (1)

Application Number Title Priority Date Filing Date
CA281,098A Expired CA1111575A (en) 1977-01-19 1977-06-21 Apparatus and method for reconstructing data

Country Status (7)

Country Link
JP (1) JPS5396689A (is")
CA (1) CA1111575A (is")
DE (1) DE2735437A1 (is")
FR (1) FR2378289A2 (is")
IT (1) IT1151463B (is")
NL (1) NL7706873A (is")
SE (1) SE437763B (is")

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816462A1 (de) * 1978-04-15 1979-10-25 Philips Patentverwaltung Verfahren zur erzeugung verbesserter rekonstruktionsbilder in computer-tomographiegeraeten
NL8204086A (nl) * 1982-10-22 1984-05-16 Philips Nv Werkwijze en inrichting voor het bepalen van een stralingsverzwakkingsverdeling in een vlak van een lichaam.
JPH0441844Y2 (is") * 1984-11-02 1992-10-01
JP4585815B2 (ja) * 2004-09-03 2010-11-24 キヤノン株式会社 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1283915A (en) * 1968-08-23 1972-08-02 Emi Ltd A method of and apparatus for examination of a body by radiation such as x or gamma radiation
GB1471531A (en) * 1973-04-25 1977-04-27 Emi Ltd Radiography
GB1478123A (en) * 1973-08-18 1977-06-29 Emi Ltd Tomography
GB1526764A (en) * 1974-11-29 1978-09-27 Univ Leland Stanford Junior Position sensitive x-ray or ypsilon-ray detector and 3-d tomography using same
GB1537487A (en) * 1975-03-18 1978-12-29 Emi Ltd Radiography
US4149247A (en) * 1975-12-23 1979-04-10 Varian Associates, Inc. Tomographic apparatus and method for reconstructing planar slices from non-absorbed and non-scattered radiation

Also Published As

Publication number Publication date
JPS5396689A (en) 1978-08-24
DE2735437A1 (de) 1978-07-20
JPS6314983B2 (is") 1988-04-02
SE437763B (sv) 1985-03-18
NL7706873A (nl) 1978-07-21
SE7707270L (sv) 1978-07-20
IT1151463B (it) 1986-12-17
FR2378289A2 (fr) 1978-08-18
FR2378289B2 (is") 1983-08-19

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Legal Events

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