Biomedical Significance of Small-Animal Imaging -- Detectors for Small-Animal SPECT I -- Detectors for Small-Animal SPECT II -- The Animal in Animal Imaging -- Objective Assessment of Image Quality -- SPECT Imager Design and Data-Acquisition Systems -- Computational Algorithms in Small-Animal Imaging -- Reconstruction Algorithm with Resolution Deconvolution in a Small-Animal PET Imager -- Estim…