Systems, devices, and methods for position monitoring and motion compensation
US10888483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2017 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Aug 5, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1051
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A motion compensation system includes a plurality of RF transmitters, a plurality of direction of arrival sensors, and a positioning table which together are usable to compensate for intrafraction motion of a patient during a medical procedure. The positioning table may be a secondary table arranged next to or above a primary table such as a radiotherapy couch, allowing for repositioning of part of patient such as the head and neck relative to a remainder of the body. The motion compensation system employs a direction of arrival sensor that includes rotating antenna elements in a configuration that improves the ease and accuracy of signal processing and analysis to identify the position of an RF transmitter affixed to a patient. The repositioning table has six degrees of freedom and is safe for use in imaging and radiation intensive environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.