Snapshot backscatter radiography (SBR) systems including system having dynamic collimation
US7130374B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2006 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/203
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A snapshot backscatter radiography (SBR) system and related method includes at least one penetrating radiation source, and at least one substantially transmissive radiation detector. The substantially transmissive radiation detector is interposed between an object region to be interrogated and the radiation source. The substantially transmissive radiation detector receives and detects forward radiation from the radiation source before transmitting a portion thereof to interrogate the object region, wherein a portion of backscattered radiation provided by the object region is detected by the detector. A changeable collimating grid having a plurality of spaced apart radiation absorbing features is coupled to structure changing a position of the plurality of features and is disposed in at least one of the path of the forward radiation and the path of the backscattered radiation. An image of the object can be obtained by subtracting the forward radiation detected at the detector, or an estimate thereof, from a total of all radiation detected by the detector. Integrated circuit inspection, land mine detection, and luggage or cargo screening systems can all be SBR based.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.