Method and apparatus for obtaining a selectable contrast image in an X-ray film
US5007073A · kind A · utility
0Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Dec 20, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides a method and apparatus for obtaining a selectable contrast image in an X-ray exposure. The method comprises applying a controlled high voltage to an X-ray tube in response to a controlled invertor-generated voltage; generating the controlled invertor-generated voltage; driving the invertor in response to a KV control signal; comparing a KV feedback signal with a KV reference signal for developing said KV control signal, and selecting any of a plurality of variable level reference signals as the KV reference signal. The apparatus comprises means for carrying out the foregoing method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.