X-ray computerized tomograph including collimator that restricts irradiation range of X-ray fan beam
US6445761B1 · kind B1 · utility
33Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Sep 10, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/027
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An X-ray CT apparatus including a collimator that restricts an irradiation range of an X-ray fan beam, in which first projection data is obtained with no restriction placed onto the X-ray irradiation range through the collimator, then, second projection data is obtained with the X-ray irradiation range restricted in accordance with a concerned region set on a tomographic image, and when reconstructing an image with the use of the second projection data, the image is reconstructed using, as data outside of the concerned region, data of a corresponding portion of the first projection data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.