The SisPRad technology is a software developed for the management of Radiological Protection in the hospital diagnostic service and integrates several instruments for computerization of data related to radiological protection. Objective: To build and test a management technology for PR in a hospital radiology service. Methodology: Methodological and quasi-experimental study of the equivalent anterior and posterior type, conducted in a university hospital in southern Brazil. Data were collected from professionals working in the radiodiagnostic service and the Radiological Protection Committee, as well as data collection in documents made available by the Committee.