X-ray computed tomography apparatus
US7769129B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 2, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Jan 28, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An X-ray computed tomography apparatus includes an X-ray tube (101) which generates X-rays, a multi-channel X-ray detector (103) which detects X-rays transmitted through an object to be examined, a rotating frame (102) which is equipped with the X-ray tube and the X-ray detector, a reconstruction unit (114) which reconstructs an image on the basis of an output from the X-ray detector, and a control unit (121) which alternately shifts the X-ray focal spot of the X-ray tube along the rotating direction on the anode by a distance +σ and a distance −σ for each view. The distance σ is set towhere SOD is the distance between the X-ray tube and the rotation center, and Δβ is the angle difference between adjacent views, such that X-ray focal spots in the adjacent views overlap each other at almost the same position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.