Dynamic dose control in multi-slice CT scan
US5400378A · kind A · utility
110Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Nov 19, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/583
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An x-ray CT system performs a multi-slice scan in which tube current is modulated to reduce the x-ray dose without increasing image noise. Scout data is acquired from which a relative attenuation function (RAF) is calculated to relate expected patient attenuation of the x-ray beam at each slice to a reference. Tube current commands (mA) for each slice are calculated from the RAF and used to acquire image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.