GB557150A - Improvements in or relating to x-ray apparatus - Google Patents
Improvements in or relating to x-ray apparatusInfo
- Publication number
- GB557150A GB557150A GB1294342A GB1294342A GB557150A GB 557150 A GB557150 A GB 557150A GB 1294342 A GB1294342 A GB 1294342A GB 1294342 A GB1294342 A GB 1294342A GB 557150 A GB557150 A GB 557150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- cone
- radiation
- mirror
- line
- 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
- 230000005855 radiation Effects 0.000 abstract 4
- 238000006073 displacement reaction Methods 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
- A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
-
- 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
- G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- High Energy & Nuclear Physics (AREA)
- Optics & Photonics (AREA)
- Molecular Biology (AREA)
- General Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
557,150. R÷ntgen-ray apparatus. GENERAL ELECTRIC CO., Ltd., and CALDWELL. J. T. Sept. 14, 1942, No. 12943. [Classes 91 (i) and 98 (i)] A device for adjustably limiting the divergence of radiation from a source of X-rays comprises a hollow member 22, Fig. 3, capable of angular displacement about an axis 23 normal to the axis of the cone of radiation and provided with an even number of apertures of difl'erent sizes in its periphery, so that the radiation passes through alternative pairs. As shown, the member 22 is of square section, giving four degrees of divergence according to its setting, and is mounted in a casing 20 carried by the X-ray tube holder 21. To facilitate adjustment of the apparatus so that the axis of the cone of radiation passes through the centre of the screen a detachable sighting device is provided consisting of a tubular body 34, Fig. 12, containing a mirror 36 which is equally inclined to the axis of the cone and to the line through an aperture 35 in a diaphragm and crossed wires forming an object 38, this line and the axis of the cone intersecting at the mirror. In the form shown, the tube 34 is inserted through a hollow trunnion 25 which carries one side of the member 22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1294342A GB557150A (en) | 1942-09-14 | 1942-09-14 | Improvements in or relating to x-ray apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1294342A GB557150A (en) | 1942-09-14 | 1942-09-14 | Improvements in or relating to x-ray apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB557150A true GB557150A (en) | 1943-11-05 |
Family
ID=10013982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1294342A Expired GB557150A (en) | 1942-09-14 | 1942-09-14 | Improvements in or relating to x-ray apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB557150A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3631249A (en) * | 1968-10-03 | 1971-12-28 | Siemens Ag | Adjustment apparatus for x-ray wedge filter plates |
| US4419764A (en) * | 1980-09-22 | 1983-12-06 | Instrumentarium Oy | Slit collimator in a panoramic X-ray apparatus |
-
1942
- 1942-09-14 GB GB1294342A patent/GB557150A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3631249A (en) * | 1968-10-03 | 1971-12-28 | Siemens Ag | Adjustment apparatus for x-ray wedge filter plates |
| US4419764A (en) * | 1980-09-22 | 1983-12-06 | Instrumentarium Oy | Slit collimator in a panoramic X-ray apparatus |
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