Patent · US Active

Detuning a MRT receive antenna

US10145912B2 · kind B2 · utility

0Cited by

5References

18Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Klaus Huber · Effeltrich, DE
Robert Rehner · Fairview Avenue, DE
Markus Vester · Koblenzer Straße, DE

Key dates

Filing date	Apr 18, 2016
Grant date	Dec 4, 2018
Priority date	—
Expiry date	Feb 17, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/341
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An arrangement for detuning a receive antenna, a detunable magnetic resonance coil, and a magnetic resonance device having a detunable magnetic resonance coil are provided. The arrangement includes a receive antenna having at least one first capacitance, wherein radiofrequency signals from a magnetic resonance examination may be received by way of the receive antenna. The arrangement furthermore includes a switchable detuning circuit containing the first capacitance switched to form an oscillating circuit and a first inductance, and a switching device having a first and a second connection point to deliver a voltage between the first and a second connection point, and one or more transistors. The switching device switches the oscillating circuit to a high impedance level with aid of the one or more transistors on delivery of a positive voltage to the first connection point, preventing a radiofrequency signal from being received by way of the receive antenna.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.