Scanned x-ray selective imaging system
US4686695A · kind A · utility
139Cited by
10References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1980 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Nov 17, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/412
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An x-ray beam is scanned through a sequence of subsections of a volume. At each position the x-ray transmission is measured at two energies. The resultant transmission signals are processed to produce a signal representing the projected amount of a specific material in the volume. The two energies are chosen so that the mass attenuation coefficients of bone and soft tissue are comparable to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.