X-ray tube preheat control
US7016468B1 · kind B1 · utility
12Cited by
22References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | May 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and diagnostic radiation emission begins. This circuit eliminates a fixed amount of preheat pulses which contribute unusable radiation during preheat of the filament in prior art systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.