This book constitutes the refereed proceedings of the Third International Workshop on
Simulation and Synthesis in Medical Imaging SASHIMI 2018 held in conjunction with MICCAI 2018
in Granada Spain in September 2018.The 14 full papers presented were carefully reviewed and
selected from numerous submissions. This workshop continues to provide a state-of-the-art and
integrative perspective on simulation and synthesis in medical imaging for the purpose of
invigorating research and stimulating new ideas on how to build theoretical links practical
synergies and best practices between these two research directions.