Cone beam CT scanners with reduced scan length
US7020236B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | Aug 11, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/0487
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Computerized tomography apparatus for reconstructing attenuation values within a volume comprising: an x-ray source situated operative to rotate about said volume, in a rotation plane, while irradiating at least a portion of the volume; a plurality of rows of x-ray detectors illuminated by said rotating x-ray source situated on an opposite side of the volume; a patient support operative to move a patient through a space between the source and detectors at an angle to the normal to the rotation plane, while the x-ray source illuminates the detectors; and a controller operative to compute the angle based on at least one of a radius R of said rotation, a radius r of said volume and a helix pitch, m, defined as a distance the patient support moves during a single rotation of the x-ray source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.