FR2368045A1 - Appareil pour la visualisation de rayonnement - Google Patents

Appareil pour la visualisation de rayonnement

Info

Publication number
FR2368045A1
FR2368045A1 FR7730541A FR7730541A FR2368045A1 FR 2368045 A1 FR2368045 A1 FR 2368045A1 FR 7730541 A FR7730541 A FR 7730541A FR 7730541 A FR7730541 A FR 7730541A FR 2368045 A1 FR2368045 A1 FR 2368045A1
Authority
FR
France
Prior art keywords
signals
domain
correspondence
scintillations
muffled
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
FR7730541A
Other languages
English (en)
Other versions
FR2368045B1 (fr
Inventor
Kai Lange
Ernest Joseph Wiesen
Eric M Woronowicz
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
Application filed by General Electric Co filed Critical General Electric Co
Publication of FR2368045A1 publication Critical patent/FR2368045A1/fr
Application granted granted Critical
Publication of FR2368045B1 publication Critical patent/FR2368045B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1642—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using a scintillation crystal and position sensing photodetector arrays, e.g. ANGER cameras
    • 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
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4258—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector for detecting non x-ray radiation, e.g. gamma radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Nuclear Medicine (AREA)
  • Measurement Of Radiation (AREA)

Abstract

Appareil permettant de conserver l'uniformité et la correspondance entre le dessin engendré par le rayonnement et le dessin reproduit Il comprend un scintillateur, des dispositifs photosensibles 30, un dispositif de conversion 57, un premier dispositif 67, 70 sensible à l'apparition des signaux d'entrée au-dessus d'un premier domaine d'amplitude et à l'intérieur d'un second domaine d'amplitude plus élevé et qui altère le gain du dispositif de conversion du signal de telle sorte que les signaux dans ce second domaine soient étouffés de façon à améliorer la correspondance entre ces signaux et les coordonnées des scintillations, et un second dispositif 68-74 sensible à l'apparition de signaux d'entrée dans un troisième domaine d'amplitude plus élevé que le second domaine pour altérer encore le gain du dispositif de conversion de sorte que les signaux dans ce troisième domaine soient étouffés, ce qui améliore encore la correspondance entre ces signaux et les coordonnées des scintillations. Application aux caméras de grammagraphie.
FR7730541A 1976-10-12 1977-10-11 Appareil pour la visualisation de rayonnement Granted FR2368045A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/731,150 US4071762A (en) 1976-10-12 1976-10-12 Scintillation camera with improved output means

Publications (2)

Publication Number Publication Date
FR2368045A1 true FR2368045A1 (fr) 1978-05-12
FR2368045B1 FR2368045B1 (fr) 1984-05-11

Family

ID=24938272

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730541A Granted FR2368045A1 (fr) 1976-10-12 1977-10-11 Appareil pour la visualisation de rayonnement

Country Status (8)

Country Link
US (1) US4071762A (fr)
JP (1) JPS5384378A (fr)
DE (1) DE2745364A1 (fr)
DK (1) DK151729C (fr)
FR (1) FR2368045A1 (fr)
GB (1) GB1593426A (fr)
IT (1) IT1087919B (fr)
NL (1) NL190032C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395514A1 (fr) * 1977-06-20 1979-01-19 Gen Electric Dispositif de correction de linearite pour une camera a scintillation
FR2437630A1 (fr) * 1978-09-26 1980-04-25 Ohio Nuclear Appareil de detection de rayonnement ionisant avec correction des distorsions

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5478192A (en) * 1977-12-02 1979-06-22 Toshiba Corp Scintillation camera
US4258428A (en) * 1979-06-25 1981-03-24 General Electric Company Compton effect deemphasizer for gamma cameras
US4455616A (en) * 1979-07-09 1984-06-19 Elscint, Ltd. Fast gamma camera
US4475042A (en) * 1981-06-15 1984-10-02 Siemens Gammasonics, Inc. Dynamic threshold for scintillation camera
US4531058A (en) * 1982-01-28 1985-07-23 The Massachusetts General Hospital Positron source position sensing detector and electronics
US4873632A (en) * 1984-04-27 1989-10-10 The Curators Of The University Of Missouri Apparatus and methods for scatter reduction in radiation imaging
JPS62110141A (ja) * 1985-11-08 1987-05-21 Hamamatsu Photonics Kk 透過率の小さい物体の密度等を測定する装置
US4880981A (en) * 1988-03-11 1989-11-14 Bicron Corporation Low level radiation measurement device
US5004904A (en) * 1988-06-17 1991-04-02 Kabushiki Kaisha Toshiba Method and system for controlling gain and offset in radiation measurement apparatus
US5171998A (en) * 1990-06-14 1992-12-15 Engdahl John C Gamma ray imaging detector
GB9314398D0 (en) * 1993-07-12 1993-08-25 Gen Electric Signal processing in scintillation cameras for nuclear medicine
US5689115A (en) * 1995-11-24 1997-11-18 Elscint Ltd. Advanced nuclear medicine system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2243450A2 (fr) * 1973-09-12 1975-04-04 Ohio Nuclear

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732419A (en) * 1970-10-12 1973-05-08 Nuclear Chicago Corp Scintillation camera with improved resolution
US3911278A (en) * 1972-07-05 1975-10-07 Ohio Nuclear Radiation sensing device
US3851177A (en) * 1973-02-23 1974-11-26 Searle & Co Scintillation camera with improved linearity
US3953735A (en) * 1973-06-14 1976-04-27 Ohio Nuclear, Inc. Radiation sensing device
US3980886A (en) * 1973-11-21 1976-09-14 Raytheon Company Gamma camera display system
US3984689A (en) * 1974-11-27 1976-10-05 G. D. Searle & Co. Scintillation camera for high activity sources

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2243450A2 (fr) * 1973-09-12 1975-04-04 Ohio Nuclear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2395514A1 (fr) * 1977-06-20 1979-01-19 Gen Electric Dispositif de correction de linearite pour une camera a scintillation
FR2437630A1 (fr) * 1978-09-26 1980-04-25 Ohio Nuclear Appareil de detection de rayonnement ionisant avec correction des distorsions

Also Published As

Publication number Publication date
DK453277A (da) 1978-04-13
FR2368045B1 (fr) 1984-05-11
NL7710949A (nl) 1978-04-14
DK151729C (da) 1988-06-13
GB1593426A (en) 1981-07-15
JPS6220510B2 (fr) 1987-05-07
DK151729B (da) 1987-12-28
US4071762A (en) 1978-01-31
JPS5384378A (en) 1978-07-25
NL190032C (nl) 1993-10-01
IT1087919B (it) 1985-06-04
NL190032B (nl) 1993-05-03
DE2745364A1 (de) 1978-04-13

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