Dose reduction via dynamic collimation adjustment for targeted field of view and/or digital tilt CT
US9042514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2012 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Apr 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/419
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Among other things, one or more systems and/or techniques are described for dynamically adjusting, in a fan-angle direction, attenuation of radiation during an examination of an object such that portions of the object that are not represented in resulting (tilted/targeted) images of the object are exposed to less radiation than portions of the object that are represented in resulting (tilted/targeted) images of the object. As a rotating gantry is rotated, blades of a pre-object collimator are dynamically repositioned to selectively attenuate emitted radiation. A collimator adjustment component may be configured to determine how to reposition the blades based at least in part upon at least one of a desired tilt of the resulting (tilted) image(s), a translational position of the object, and a gantry rotation angle, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.