Method and apparatus for optimizing dosage to scan subject
US6647095B2 · kind B2 · utility
56Cited by
13References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | Apr 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a CT imaging system utilizing a pre-subject cone-angle dependent filter to optimize dosage applied to the scan subject for data acquisition. The cone angle dependent pre-subject filter is designed to have a shape that is thicker for outer detector rows and thinner for inner detector rows. As a result, x-rays corresponding to the outer detector rows undergo greater filtering than the x-rays corresponding to the inner detector rows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.