GB1493267A - Apparatus for collimating a beam of penetrating ionizing radiation - Google Patents

Apparatus for collimating a beam of penetrating ionizing radiation

Info

Publication number
GB1493267A
GB1493267A GB5215274A GB5215274A GB1493267A GB 1493267 A GB1493267 A GB 1493267A GB 5215274 A GB5215274 A GB 5215274A GB 5215274 A GB5215274 A GB 5215274A GB 1493267 A GB1493267 A GB 1493267A
Authority
GB
United Kingdom
Prior art keywords
grooves
powder
radiation
cover
block
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
GB5215274A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB5215274A priority Critical patent/GB1493267A/en
Publication of GB1493267A publication Critical patent/GB1493267A/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
    • A61B6/06—Diaphragms
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/025—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Nuclear Medicine (AREA)

Abstract

1493267 Radiation beam collimators FERRANTI Ltd 3 Dec 1975 [3 Dec 1974] 52152/74 Heading H5R A collimator for a beam of penetrating ionizing radiation, e.g. gamma-rays, is made by forming a pattern of intersecting grooves 12, 13, 14, 15 in one surface 11 of a block 10 of material transparent to the radiation, at least partly filling the grooves with powder of a metal having a high radiation absorption coefficient, and closing the grooves with a cover of material transparent to the radiation to retain the powder in the grooves. The block and cover may be of acrylic or other plastics, and the powder may be of tungsten or lead. As shown, the grooves are in two orthogonal sets, with each set converging from the surface 11. The ends of the grooves are closed by a sleeve around the block, and if the grooves are only partially filled with powder the cover has projections extending into the grooves to retain the powder, which is compacted. The collimator is described for use with radiation emitted by a radio-isotope in a patient's body, and delimits an inspection field of the body.
GB5215274A 1975-12-03 1975-12-03 Apparatus for collimating a beam of penetrating ionizing radiation Expired GB1493267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5215274A GB1493267A (en) 1975-12-03 1975-12-03 Apparatus for collimating a beam of penetrating ionizing radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5215274A GB1493267A (en) 1975-12-03 1975-12-03 Apparatus for collimating a beam of penetrating ionizing radiation

Publications (1)

Publication Number Publication Date
GB1493267A true GB1493267A (en) 1977-11-30

Family

ID=10462829

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5215274A Expired GB1493267A (en) 1975-12-03 1975-12-03 Apparatus for collimating a beam of penetrating ionizing radiation

Country Status (1)

Country Link
GB (1) GB1493267A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404471A (en) * 1980-01-11 1983-09-13 Winnek Douglas Fredwill Lenticular x-ray film with improved grating mask and intensifying screen
US4741012A (en) * 1985-01-29 1988-04-26 B.V. Optische Industrie "De Oude Delft" Apparatus for slit radiography
US4780904A (en) * 1987-09-16 1988-10-25 Richard Winter Focussable anti-scatter grid
EP0506023A1 (en) * 1991-03-27 1992-09-30 Kabushiki Kaisha Toshiba High precision single-focal-line collimator and method for manufacturing such a collimator.
EP0731472A1 (en) * 1995-03-10 1996-09-11 General Electric Company Anti-scatter x-ray grid device for medical diagnostic radiography and method for fabricating the grid
EP0911836A1 (en) * 1997-10-24 1999-04-28 TRW Inc. Grid formed with silicon substrate
JP2000325332A (en) * 1999-04-12 2000-11-28 General Electric Co <Ge> Collimator for imaging system and its manufacture
EP1280165A2 (en) * 2001-07-28 2003-01-29 Philips Corporate Intellectual Property GmbH Anti-scatter grid for an X-ray device
EP1298678A2 (en) * 2001-09-28 2003-04-02 Siemens Aktiengesellschaft Method of producing an anti-scatter grid or a collimator
FR2953320A1 (en) * 2009-11-27 2011-06-03 Gen Electric REVERSE ANTI-DIFFUSING GRID

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4404471A (en) * 1980-01-11 1983-09-13 Winnek Douglas Fredwill Lenticular x-ray film with improved grating mask and intensifying screen
US4741012A (en) * 1985-01-29 1988-04-26 B.V. Optische Industrie "De Oude Delft" Apparatus for slit radiography
US4780904A (en) * 1987-09-16 1988-10-25 Richard Winter Focussable anti-scatter grid
EP0506023A1 (en) * 1991-03-27 1992-09-30 Kabushiki Kaisha Toshiba High precision single-focal-line collimator and method for manufacturing such a collimator.
US5198680A (en) * 1991-03-27 1993-03-30 Kabushiki Kaisha Toshiba High precision single focus collimator and method for manufacturing high precision single focus collimator
EP0731472A1 (en) * 1995-03-10 1996-09-11 General Electric Company Anti-scatter x-ray grid device for medical diagnostic radiography and method for fabricating the grid
EP0911836A1 (en) * 1997-10-24 1999-04-28 TRW Inc. Grid formed with silicon substrate
JP2000325332A (en) * 1999-04-12 2000-11-28 General Electric Co <Ge> Collimator for imaging system and its manufacture
EP1045398A3 (en) * 1999-04-12 2003-12-17 General Electric Company Radiation imager collimator
EP1280165A2 (en) * 2001-07-28 2003-01-29 Philips Corporate Intellectual Property GmbH Anti-scatter grid for an X-ray device
EP1280165A3 (en) * 2001-07-28 2008-02-13 Philips Intellectual Property & Standards GmbH Anti-scatter grid for an X-ray device
EP1298678A2 (en) * 2001-09-28 2003-04-02 Siemens Aktiengesellschaft Method of producing an anti-scatter grid or a collimator
EP1298678A3 (en) * 2001-09-28 2008-04-16 Siemens Aktiengesellschaft Method of producing an anti-scatter grid or a collimator
FR2953320A1 (en) * 2009-11-27 2011-06-03 Gen Electric REVERSE ANTI-DIFFUSING GRID
US8666025B2 (en) 2009-11-27 2014-03-04 General Electric Company Back focused anti-scatter grid

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee