The full names of the workshops are Mathematical Methods in Emerging Modalities of Medical Imaging, held in October 2009, and Inverse Transport Theory and Tomography, held in May 2010. Mathematicians, physicists, engineers, and medical researchers presented research and review papers, of which 12 are published here. Among the topics are multiple illumination quantitative photoacoustic tomography using transport and diffusion models, non-uniqueness results for a hybrid inverse problem, an inverse gravimetry approach to attenuated tomography, basic theory for generalized linear solid viscoelastic models, current density impedance imaging, and singularities and instability of reconstruction in thermoacoustic tomography. No index is provided. Annotation ©2012 Book News, Inc., Portland, OR (booknews.com)