Radiotherapy control apparatus and radiotherapy control program
US9616249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Oct 22, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1074
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radiotherapy control apparatus includes a fluoroscopic image acquisition unit to acquire fluoroscopic images of markers in a patient from a single fluoroscopic imaging device, a projection line calculation unit to identify projected positions of the markers on the fluoroscopic image and calculate equations of projection lines linking these projected positions and a focus position of the imaging device, an inter-marker distance acquisition unit to acquire a distance between each pair of the markers, a marker position calculation unit to calculate current positions of the markers based on the equations and the distances, and a therapeutic radiation emission determination unit to determine whether to emit therapeutic radiation based on the current positions of the markers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.