This paper presents an ongoing research project that examines the exchange between medicine and the media during an era marked by the expansion of the Swedish welfare state. More specifically the aim of this project is to analyse the mass x-ray screenings for tuberculosis in Sweden in the light of media development. The period of time under examination coincides with a breakthrough for 35 mm still cameras, the use of photographs in the press and in television broadcasting as well as a proliferation of propaganda and advertisements. What was the relation between medical x-ray technology and commercial media in the development of miniature x-ray photography? What media strategies were employed to mobilize the support of the citizens for the mass x-ray screenings of healthy and sick lungs? What consequences did the collaboration between medical and media actors have for the reporting about the survey to the public? How and with what effects did the chest x-rays intervene in people’s everyday life? To achieve the objectives of the project a series of empirical studies are presently being conducted that draw upon a broad range of textual, visual, and audiovisual sources. Analytically the focus is partly on the convergence between medical instruments and media techniques, partly on overlapping media use, partly on institutional collaborations. The paper will end with some thoughts of how this project can contribute to historicise current discussions on mediatisation as a phenomenon linked to late modern society.