Modulating x-ray tube current in a CT system
US5625662A · kind A · utility
37Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention, in one form, is an x-ray CT system that modulates x-ray tube current as a function of gantry angle and reconstruction algorithm weighting coefficients. View indexes are stored in a table, and during scanning, values are periodically read from this table to determine weighting coefficients. An algorithm is applied to the weighting coefficients to generate an x-ray tube modulating factor. This modulating factor is then applied to the x-ray tube current to generate modulated x-ray tube current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.