FR2433927B1 - - Google Patents

Info

Publication number
FR2433927B1
FR2433927B1 FR7823764A FR7823764A FR2433927B1 FR 2433927 B1 FR2433927 B1 FR 2433927B1 FR 7823764 A FR7823764 A FR 7823764A FR 7823764 A FR7823764 A FR 7823764A FR 2433927 B1 FR2433927 B1 FR 2433927B1
Authority
FR
France
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
FR7823764A
Other languages
French (fr)
Other versions
FR2433927A1 (fr
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.)
Ohio Nuclear Inc
Original Assignee
Ohio Nuclear Inc
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 Ohio Nuclear Inc filed Critical Ohio Nuclear Inc
Publication of FR2433927A1 publication Critical patent/FR2433927A1/fr
Application granted granted Critical
Publication of FR2433927B1 publication Critical patent/FR2433927B1/fr
Granted 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
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4275—Arrangements for detecting radiation specially adapted for radiation diagnosis using a detector unit almost surrounding the patient, e.g. more than 180°
    • 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; 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
    • 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]

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Measurement Of Radiation (AREA)
  • Image Analysis (AREA)
FR7823764A 1977-09-30 1978-08-11 Appareil de tomographie radiographique et procede de reconstitution d'images Granted FR2433927A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83808477A 1977-09-30 1977-09-30

Publications (2)

Publication Number Publication Date
FR2433927A1 FR2433927A1 (fr) 1980-03-21
FR2433927B1 true FR2433927B1 (it) 1984-06-29

Family

ID=25276216

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823764A Granted FR2433927A1 (fr) 1977-09-30 1978-08-11 Appareil de tomographie radiographique et procede de reconstitution d'images

Country Status (5)

Country Link
JP (1) JPS5466791A (it)
AU (1) AU522916B2 (it)
DE (1) DE2842518A1 (it)
FR (1) FR2433927A1 (it)
GB (1) GB2005514B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288695A (en) * 1979-04-13 1981-09-08 Technicare Corporation Computerized tomographic scanner with shaped radiation filter
HU188200B (en) * 1982-09-03 1986-03-28 Medicor Muevek,Hu Convolver
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.
EP0109205A3 (en) * 1982-11-15 1985-07-31 Picker International, Inc. Method and apparatus for computed tomography imaging
US4570224A (en) * 1982-11-29 1986-02-11 Elscint, Inc. Combining rebinned and unrebinned parallel ray data with unequal lateral spacing to create tomograph images
JPS6089277A (ja) * 1983-10-19 1985-05-20 Yokogawa Hokushin Electric Corp 逆投影装置
US4590559A (en) * 1983-11-23 1986-05-20 Tokyo Shibaura Denki Kabushiki Kaisha Data disc system for a computed tomography X-ray scanner
JP2011502679A (ja) 2007-11-15 2011-01-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 三次元ｘ線画像における改良された画質のための可動式くさび
CN114998462B (zh) * 2022-05-20 2024-10-29 成都理工大学工程技术学院 一种层析γ扫描线衰减系数重建方法

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
US3983398A (en) * 1974-11-29 1976-09-28 The Board Of Trustees Of Leland Stanford Junior University Method and apparatus for X-ray or γ-ray 3-D tomography using a fan beam
US3965353A (en) * 1974-12-06 1976-06-22 Albert Macovski Cross-sectional X-ray emission imaging system
GB1537487A (en) * 1975-03-18 1978-12-29 Emi Ltd Radiography
GB1571509A (en) * 1976-03-03 1980-07-16 Emi Ltd Radiography
JPS52106698A (en) * 1977-03-03 1977-09-07 Emi Ltd Radiation photograph

Also Published As

Publication number Publication date
AU522916B2 (en) 1982-07-01
FR2433927A1 (fr) 1980-03-21
GB2005514B (en) 1982-03-17
JPS5466791A (en) 1979-05-29
GB2005514A (en) 1979-04-19
AU3845378A (en) 1980-01-31
DE2842518A1 (de) 1979-04-05

Similar Documents

Publication Publication Date Title
FR2376699B1 (it)
DE2721984C2 (it)
FR2433927B1 (it)
FR2376976B1 (it)
DE2730885C2 (it)
FR2360499B1 (it)
FR2376984B1 (it)
AU3353778A (it)
FR2378237B1 (it)
FR2376123B1 (it)
FR2376742B3 (it)
AR210643A1 (it)
FR2378112B1 (it)
DK140675C (it)
AU495917B2 (it)
AU71461S (it)
CS191109B1 (it)
DK494277A (it)
CH614781A5 (it)
BG25873A2 (it)
BE865722A (it)
BG25855A1 (it)
BE866391A (it)
BE871419A (it)
BG25860A1 (it)

Legal Events

Date Code Title Description
ST Notification of lapse