X-ray CT apparatus
US7778381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2008 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | Dec 9, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/542
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides an X-ray CT apparatus capable of obtaining each tomographic image indicative of X-ray tube voltage dependent information of a subject with the optimum image quality by less reduced exposure. The X-ray CT apparatus includes device for setting a plurality of X-ray tube voltages and sets imaging conditions used in the photography using the respective X-ray tube voltages in such a manner that respective image noise of tomographic images photographed at the X-ray tube voltages become substantially identical to one another. The setting of the imaging conditions is the setting of X-ray tube currents. The X-ray tube currents are set based on geometrical characteristic amounts of the subject determined from each scout image in such a manner that the respective image noise of the tomographic images photographed at the plurality of X-ray tube voltages become substantially identical to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.