GB1493267A - Apparatus for collimating a beam of penetrating ionizing radiation - Google Patents
Apparatus for collimating a beam of penetrating ionizing radiationInfo
- 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
Links
- 230000005865 ionizing radiation Effects 0.000 title abstract 2
- 230000000149 penetrating effect Effects 0.000 title abstract 2
- 239000000843 powder Substances 0.000 abstract 5
- 230000005855 radiation Effects 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
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.
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 (11)
| 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 |
| EP1280165A3 (en) * | 2001-07-28 | 2008-02-13 | Philips Intellectual Property & Standards GmbH | Anti-scatter grid for an X-ray device |
| 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 |
| GB2640863A (en) * | 2024-05-07 | 2025-11-12 | Univ Of Lancaster | A collimator |
-
1975
- 1975-12-03 GB GB5215274A patent/GB1493267A/en not_active Expired
Cited By (14)
| 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 |
| EP1280165A3 (en) * | 2001-07-28 | 2008-02-13 | Philips Intellectual Property & Standards GmbH | Anti-scatter grid for an X-ray device |
| 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 |
| GB2640863A (en) * | 2024-05-07 | 2025-11-12 | Univ Of Lancaster | A collimator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |