We live today under the empire of image. After oral and written words, image acquires an unprecedented relevance. It dramatically determines our life, both our way of seeing the world and of performing our individual and collective existence. Our aim is to present a video installation - Body-image - followed by a discussion where, taking images of the body as a case-study, questions related to the actual epistemological value of image will be discussed. Body-image was created in 2011 by the Centre for Philosophy of Science of the University of Lisbon in the context of a research project entitled "Image in Science and Art". It shows images of the body produced by Science and Art since the 19th century up until today. It is structured in three moments - Body-landscape, Body-fragment, and Bodyalgorithm - accompanying the most crucial technical and technological transformations occurred in that period. The first is marked by drawing; the second by photography and X-ray; the third by digitalization.