Split energy level radiation detection
US4963746A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1986 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Nov 25, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/032
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An energy discriminating apparatus and method is disclosed for use in connection with digital radiography and fluoroscopy. In use of the detection system and method an X-ray source is actuated to direct X-rays through a patient's body, the X-rays including both higher and lower energy radiation. A first detector element, including a plurality of segments each segment including a phosphor coating layer and a sensor, is positioned opposite the source to receive and respond predominantly to X-rays in a lower energy range, the remaining X-rays, being generally of higher energy, passing through the first detector element. A second detector element, also including a plurality of segments, each segment including a phosphor coating layer and a sensor, is positioned to receive and respond to the higher energy radiation passing through the first element. The sensors are coupled respectively to each detector element segment for substantially simultaneously sensing the response and spatial location, relative to the detector elements, of radiation to which each detector element respectively responds. A filter element is interposed between the first and second detectors to enhance discrimination…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.