Active position marker system for use in an MRI apparatus
US10042013B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Nov 27, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3692
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An active position marker system comprising at least one active position marker (10) and a remote transceiver unit (20) for communicating with the position marker is disclosed. Basically, the position marker (10) comprises a local RF receive coil (11) for receiving MR signals which are excited in a local volume, and a parametric amplifier (14) for amplifying and upconverting the frequency of the received MR signal into at least one microwave sideband frequency signal. This microwave signal is transmitted wirelessly or wire-bound to the transceiver unit for downconverting the same and supplying it to an image processing unit of an MR imaging apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.