Keywords: RF Arrays & Systems, RF Arrays & Systems, preamplifiers, preamplifier decoupling, power matching, noise matching, matching networks
Motivation: While preamplifier decoupling is a widely accepted technique, based on impedance mismatching, it appears counter-intuitive and still introduces confusion in the MRI community and scientists, who are not electrical engineers by training.
Goal(s): This work aims to develop a simulation setup, which clearly illustrates the signal-to-noise ratio (SNR) in preamplifier decoupled and power matched receive coils.
Approach: Circuit simulations are used to compare SNR at the output of power matched and preamplifier decoupled coils in 3T MRI systems.
Results: The networks yield similar SNR, despite having significantly different input reflection coefficients; demonstrating that preamplifier decoupling and power matching approaches lead to equivalent SNR.
Impact: The developed demonstrator is useful in understanding properties of preamplifier decoupling and breaking down a range of associated misconceptions. This can facilitate mastering a proper use of this decoupling method.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords