In order to understand the decision-making process in a Radiology Department, taking the Magnetic Resonance Equipment as an example, this paper reports a project to be followed. It is a guideline for future work development regarding Technology Assessment in Radiology. The Theoretical Framework is divided is three big issues. The first is “Technology Assessment”. Starting with the definition of some important concepts, the history and development of Technology Assessment will be addressed. The aim of this issue is to give a general main idea concerning TA contextualization. Doing a transposition of this subject to health area, it is also important to understand the particularities of Health Technology Assessment, second issue. Portugal framework on this subject will also be addressed. As so, the Portuguese National Health System is characterized and the decision-making stakeholders identified, has well as the competences for the decision-making process in general. The third issue is Decision-Making and its aim is to give a general elucidation on decision-making matters. To accomplish this, a research methodology was outlined, so that six research questions could be answered and five hypotheses could be accepted or refuted, in the future. With this research methodology, the Portuguese state of the art Magnetic Resonance equipment existence will be studied, using a survey as a resource. In the future, a mapping stakeholder technique will be used to identify the decision making key stakeholders and a survey will be applied to map theirs skills and competences in the process, where a pre-test was already applied. The results of this pre-test are presented.