Design and testing of a 750MHz CW-EPR digital console for small animal imaging

摘要

Graphical abstractDisplay OmittedHighlights?A digital console for 3D CW-EPR imaging using band-pass subsampling.?Automatic control to keep a resonator under critical coupling conditions.?In vivo3D EPR imaging of nitroxyl radicals in a mouse’s head within 10s.AbstractThis paper describes the development of a digital console for three-dimensional (3D) continuous wave electron paramagnetic resonance (CW-EPR) imaging of a small animal to improve the signal-to-noise ratio and lower the cost of the EPR imaging system. A RF generation board, an RF acquisition board and a digital signal processing (DSP) & control board were built for the digital EPR detection. Direct sampling of the reflected