System and method for couch sag compensation in image guided radio therapy
US10166407B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1074
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and system for using in a two-modality apparatus. The two-modality apparatus comprises a couch with a table top, a first modality unit and a second modality unit. A second image of a target portion of an object when the table top is at a second working position of the second modality unit may be acquired. A second sag of the table top at a second measurement point of the table top according to the second image may be determined based on the image. A difference between a first sag of the table top at a first measurement point of the table top and the second sag may be estimated based on the second sag and standard data. The standard data provides a relationship relating to a sag of the table top positioned between the first modality unit and second modality unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.