He is a pioneer in the field of medical-imaging technology. In a new book, From Conception to Birth: a Life Unfolds, he collects images of the fetus in every stage of its development. The three-dimensional color visualizations are culled from a variety of medical-image techniques and then reconfigured on the computer. Tsiaras is also a photojournalist and an artist. His previous book is The Death Rituals of Rural Greece. He is also president and CEO of Anatomical Travelogue, Inc.