Abstract #2689

SNR Degradation in Receive Arrays Due to Preamplifier Noise Coupling and a Method for Mitigation

Graham Charles Wiggins¹, Ryan Brown¹, Bei Zhang¹, Marcus Vester², Stefan Popescu², Robert Rehner², Daniel Sodickson¹

¹The Bernard and Irene Schwartz Center for Biomedical Imaging, NYU Medical Center, New York, NY, United States; ²Siemens Healthcare, Erlangen, Germany

Neighboring elements in a receive array can be decoupled by various means. However next nearest neighbors still exhibit substantial inductive coupling, which is usually mitigated through the use of preamplifier decoupling. It is commonly assumed that any remaining coupling effects can be removed by characterizing the coupling through measurement of the noise correlation matrix and application of optimum SNR reconstruction.