Work

Simulation Setup for Demonstrating SNR Performance of Preamplifier Decoupled versus Power Matched Receive Coils

Year: 2024

Type: conference-paper

Abstract: 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.

Source: Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition

DOI: 10.58530/2024/1590

Authors: Rasmus Jepsen, Jan Ardenkjær-Larsen, Vitaliy Zhurbenko

Institution: Technical University of Denmark

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: green

OpenAlex ID: W4404746463

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