Rotor and X-ray CT scanners
US9314220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Aug 28, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a rotor comprising a radiation source having a focal spot for radiating beam towards a subject, detection means for generating signals responsive to energy attenuation of said beam and a circular body having a cavity for housing the radiation source, and a circle arc-shaped surface on which the detection means are mounted. The circle arc-shaped surface is placed opposite to the cavity with respect to the subject, said cavity comprising an inside surface mounted with a shield for shielding the radiation not towards the subject. In this way, the conventional housing for radiation source and shielding are removed, resulting in reduction of focal spot motion caused by motion of the conventional housing. Furthermore, this invention proposes to mount the detection means directly on the circular body without an intermediate structural housing that reduces the detector modules motion relative to the focal spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.