This paper examines how image language has participated in the production of medical knowledge across three historically distinct phases: the pre-disciplinary period

in which representations of the body were embedded within broader artistic traditions; the institutionalization of medical art as an applied discipline

marked by Max Brödel's establishment of the first professional training program at Johns Hopkins University in 1911 and the founding of the Association of Medical Illustrators (AMI) in 1945; and the contemporary era of medical visualization

driven by digital technology and interactive simulation. Drawing on Lorraine Daston and Peter Galison's historical analysis of scientific objectivity and W.J.T. Mitchell's theory of the pictorial turn

the paper argues that the history of medical imagery is not a linear narrative of technological progress but a continuous reconstruction of the relationship between images and medical knowledge. The fundamental transformation across these three phases is not one of medium but of epistemological status: from image as artistic by-product

to image as disciplinary tool

to image as active participant in knowledge production.