Radiation emitting apparatus, radiation therapy apparatus, and collimator drive control method
US9999786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2017 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1062
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radiation emitting apparatus includes a radiation source to generate radiation, a first collimator to define a maximum radiation field of the radiation; a second collimator to regulate the radiation field and direction of irradiation; a swing portion that swings in two directions orthogonal to each other; a displacement detector to detect displacement of the second collimator relative to a reference point; a drive mechanism to drive the swing portion; a control unit to control the drive mechanism; and a storage unit included in the control unit to store one or more parameters related to mechanical movement of the swing portion. The control unit generates feedforward control information based on an inputted target swing angle, a detected displacement, and the one or more parameters stored in the storage unit, and outputs a drive signal containing the feedforward control information to the drive mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.