Alignment apparatus for X-ray imaging system
US8821015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2011 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/465
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for aligning a radiation source with a portable image receiver in a radiographic imaging system generates a magnetic field with a predetermined field pattern and with a time-varying vector direction at a predetermined frequency from an emitter apparatus that is coupled to the radiation source, wherein the generated magnetic field further comprises a synchronization signal. Sensed signals from the magnetic field are obtained from a sensing apparatus that is coupled to the image receiver, wherein the sensing apparatus comprises three or more sensor elements, wherein at least two of the sensor elements are arranged at different angles relative to each other and are disposed outside the imaging area of the image receiver. An output signal is indicative of an alignment adjustment according to the amplitude and phase of the obtained sensed signals relative to the synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.