FR2433927A1 - Appareil de tomographie radiographique et procede de reconstitution d'images - Google Patents

Appareil de tomographie radiographique et procede de reconstitution d'images

Info

Publication number
FR2433927A1
FR2433927A1 FR7823764A FR7823764A FR2433927A1 FR 2433927 A1 FR2433927 A1 FR 2433927A1 FR 7823764 A FR7823764 A FR 7823764A FR 7823764 A FR7823764 A FR 7823764A FR 2433927 A1 FR2433927 A1 FR 2433927A1
Authority
FR
France
Prior art keywords
degrees
tomography apparatus
detectors
radiographic tomography
over
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.)
Granted
Application number
FR7823764A
Other languages
English (en)
French (fr)
Other versions
FR2433927B1 (enrdf_load_stackoverflow
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 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]

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 true FR2433927A1 (fr) 1980-03-21
FR2433927B1 FR2433927B1 (enrdf_load_stackoverflow) 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 (enrdf_load_stackoverflow)
AU (1) AU522916B2 (enrdf_load_stackoverflow)
DE (1) DE2842518A1 (enrdf_load_stackoverflow)
FR (1) FR2433927A1 (enrdf_load_stackoverflow)
GB (1) GB2005514B (enrdf_load_stackoverflow)

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
CN101854863B (zh) 2007-11-15 2013-08-14 皇家飞利浦电子股份有限公司 用于改进3d x射线成像的图像质量的可移动楔
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778614A (en) * 1968-08-23 1973-12-11 Emi Ltd Method and apparatus for measuring x- or {65 -radiation absorption or transmission at plural angles and analyzing the data
US3965353A (en) * 1974-12-06 1976-06-22 Albert Macovski Cross-sectional X-ray emission imaging system
NL7702320A (nl) * 1976-03-03 1977-09-06 Emi Ltd Roentgenfotografische inrichting.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB1537487A (en) * 1975-03-18 1978-12-29 Emi Ltd Radiography
JPS52106698A (en) * 1977-03-03 1977-09-07 Emi Ltd Radiation photograph

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778614A (en) * 1968-08-23 1973-12-11 Emi Ltd Method and apparatus for measuring x- or {65 -radiation absorption or transmission at plural angles and analyzing the data
US3965353A (en) * 1974-12-06 1976-06-22 Albert Macovski Cross-sectional X-ray emission imaging system
NL7702320A (nl) * 1976-03-03 1977-09-06 Emi Ltd Roentgenfotografische inrichting.
FR2342707A1 (fr) * 1976-03-03 1977-09-30 Emi Ltd Appareil de tomographie axiale

Also Published As

Publication number Publication date
JPS5466791A (en) 1979-05-29
AU522916B2 (en) 1982-07-01
FR2433927B1 (enrdf_load_stackoverflow) 1984-06-29
GB2005514B (en) 1982-03-17
AU3845378A (en) 1980-01-31
DE2842518A1 (de) 1979-04-05
GB2005514A (en) 1979-04-19

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Legal Events

Date Code Title Description
ST Notification of lapse