Oliver Lips,Sascha Krueger,Marinus Johannes Adrianus Maria Van Helvoort
申请号：
US14378116
公开号：
US20150035533A1
申请日:
2013.02.01
申请国别(地区):
US
年份:
2015
代理人:
摘要：
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.
