X-ray diaphragm, X-ray irradiator, and X-ray apparatus
US7106831B2 · kind B2 · utility
5Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Sep 22, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/06
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An X-ray diaphragm which forms a pyramidal X-ray beam with use of a simple construction includes four blades which are arranged in a surrounding relation to four sides so as to form a pyramidal X-ray beam with an X-ray focus as a vertex, the four blades having a structure such that the blades are fitted in one another in the form of parallel crosses at portions corresponding to four-corner edges of the pyramid. The blades have respective plural cross beams, the cross beams being formed such that adjacent cross beams are fitted in each other. The distance between mutually opposed blades is variable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.