FR2397179A1 - IMPROVED TREATMENT TOMOGRAPHY DEVICE - Google Patents

IMPROVED TREATMENT TOMOGRAPHY DEVICE

Info

Publication number
FR2397179A1
FR2397179A1 FR7820314A FR7820314A FR2397179A1 FR 2397179 A1 FR2397179 A1 FR 2397179A1 FR 7820314 A FR7820314 A FR 7820314A FR 7820314 A FR7820314 A FR 7820314A FR 2397179 A1 FR2397179 A1 FR 2397179A1
Authority
FR
France
Prior art keywords
tomography device
improved treatment
data
sort
simplification
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
FR7820314A
Other languages
French (fr)
Other versions
FR2397179B1 (en
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Publication of FR2397179A1 publication Critical patent/FR2397179A1/en
Application granted granted Critical
Publication of FR2397179B1 publication Critical patent/FR2397179B1/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
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms
    • 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
    • G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (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)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Medical Treatment And Welfare Office Work (AREA)

Abstract

L'invention concerne un appareil de tomographie. L'invention permet de traiter, par transformation de convolution, des données acquises à partir d'un faisceau divergent, sans qu'il soit nécessaire de trier ces données pour les présenter en groupes relatifs à des trajets parallèles, ou de faire appel à des procédures mathématiques complexes. On accélère ainsi le traitement des données avec une simplification des moyens de calcul.The invention relates to a tomography apparatus. The invention makes it possible to process, by convolutional transformation, data acquired from a divergent beam, without it being necessary to sort these data in order to present them in groups relating to parallel paths, or to call upon complex mathematical procedures. The processing of the data is thus accelerated with a simplification of the calculation means.

FR7820314A 1977-07-12 1978-07-07 IMPROVED TREATMENT TOMOGRAPHY DEVICE Granted FR2397179A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29256/77A GB1576286A (en) 1977-07-12 1977-07-12 Radiograhy

Publications (2)

Publication Number Publication Date
FR2397179A1 true FR2397179A1 (en) 1979-02-09
FR2397179B1 FR2397179B1 (en) 1983-03-04

Family

ID=10288627

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820314A Granted FR2397179A1 (en) 1977-07-12 1978-07-07 IMPROVED TREATMENT TOMOGRAPHY DEVICE

Country Status (4)

Country Link
JP (1) JPS5419693A (en)
DE (1) DE2830832C2 (en)
FR (1) FR2397179A1 (en)
GB (1) GB1576286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636752A1 (en) * 1988-09-16 1990-03-23 Gen Electric Cgr METHOD AND SYSTEM FOR CORRECTING DEFECTS IN IMAGES OF A SCANNER DUE TO MOVEMENTS THEREOF

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1104727A (en) * 1977-08-18 1981-07-07 Godfrey N. Hounsfield Rotation-only ct scanner with beam deflection
US4278889A (en) * 1979-10-15 1981-07-14 Ohio Nuclear, Inc. Current amplifier with automatic drift correction for tomographic scanners
JPS59158800A (en) * 1983-02-25 1984-09-08 新明和工業株式会社 Safety device for height service car
DE204844T1 (en) * 1984-03-15 1987-09-03 Yokogawa Medical Systems, Ltd., Tachikawa, Tokio/Tokyo, Jp IMAGE PROCESSING DEVICE FOR X-RAY GENTOMOGRAPHY.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2019365A1 (en) * 1968-08-23 1970-07-03 Emi Ltd
FR2292985A1 (en) * 1974-11-29 1976-06-25 Univ Leland Stanford Junior POSITION SENSITIVE X OR G-RAY DETECTOR AND THREE-DIMENSIONAL TOMOGRAPHY METHOD USING THIS DETECTOR
FR2304320A1 (en) * 1975-03-18 1976-10-15 Emi Ltd TOMOGRAPHY DEVICE WITH COMPENSATION FOR VARIATIONS IN THE ENERGY SPECTRUM OF THE RADIATION SOURCE
BE850233A (en) * 1977-01-10 1977-05-02 Emi Ltd TOMOGRAPHY DEVICE WITH DETECTOR SENSITIVITY COMPENSATION
FR2350820A1 (en) * 1976-05-13 1977-12-09 Emi Ltd IMPROVEMENTS MADE TO AXIAL TOMOGRAPHY EQUIPMENT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1430989A (en) * 1971-06-30 1976-04-07 Clarke Gravely Corp Floor or carpet cleaning apparatus
GB1471531A (en) * 1973-04-25 1977-04-27 Emi Ltd Radiography
GB1493594A (en) * 1974-01-31 1977-11-30 Emi Ltd Radiography
GB1571509A (en) * 1976-03-03 1980-07-16 Emi Ltd Radiography

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2019365A1 (en) * 1968-08-23 1970-07-03 Emi Ltd
FR2292985A1 (en) * 1974-11-29 1976-06-25 Univ Leland Stanford Junior POSITION SENSITIVE X OR G-RAY DETECTOR AND THREE-DIMENSIONAL TOMOGRAPHY METHOD USING THIS DETECTOR
FR2304320A1 (en) * 1975-03-18 1976-10-15 Emi Ltd TOMOGRAPHY DEVICE WITH COMPENSATION FOR VARIATIONS IN THE ENERGY SPECTRUM OF THE RADIATION SOURCE
FR2350820A1 (en) * 1976-05-13 1977-12-09 Emi Ltd IMPROVEMENTS MADE TO AXIAL TOMOGRAPHY EQUIPMENT
BE850233A (en) * 1977-01-10 1977-05-02 Emi Ltd TOMOGRAPHY DEVICE WITH DETECTOR SENSITIVITY COMPENSATION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636752A1 (en) * 1988-09-16 1990-03-23 Gen Electric Cgr METHOD AND SYSTEM FOR CORRECTING DEFECTS IN IMAGES OF A SCANNER DUE TO MOVEMENTS THEREOF
EP0360653A1 (en) * 1988-09-16 1990-03-28 General Electric Cgr S.A. Method and system for correcting image defects caused by the movement of a scanner

Also Published As

Publication number Publication date
GB1576286A (en) 1980-10-08
DE2830832A1 (en) 1979-01-25
FR2397179B1 (en) 1983-03-04
JPS5419693A (en) 1979-02-14
JPS5543770B2 (en) 1980-11-08
DE2830832C2 (en) 1985-07-04

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse