Characterization of a Pixelated Cadmium Telluride Detector System Using a Polychromatic X-Ray Source and Gold Nanoparticle-Loaded Phantoms for Benchtop X-Ray Fluorescence Imaging oleh Sandun Jayarathna, Md Foiez Ahmed, Liam O'ryan, Hem Moktan, Yonggang Cui, Sang Hyun Cho