Medical devices play an essential role in health care, but they are also a leading causes of increasing healthcare expenditures. The purchase of technologies and the determination of how and when they should be used are among the most important decisions made by decision-makers, at the institutional level.

The present research focuses on the Portuguese health system and sheds light on the characterization of decision-making process by those involved in Magnetic Resonance Imaging (MRI) purchases.

To characterize the decision-making process, results from forty questionnaires and twenty-seven semi-structured interviews with key decision-makers were merged, using a mixed method approach. To assess competences for decision-making, a questionnaire was applied, and Exploratory and Confirmatory Factorial Analysis conducted.

Cost and suppliers’ characteristics are seen as the most important indicators to guide decisions. The decision is undertaken by a committee, in a bottom-up process, characterized by a bounded rationality, influenced by intuition and a consultant decision-maker. The reasoning and justification for selection of the committee members is unclear. The decision process is considered to be bureaucratic, time-consuming and long. Patients are negatively perceived as stakeholders in the process. Few studies were performed (mostly related to the workload of the Radiology Department) to support the decision and no national or international health technology assessment (HTA) study was used in the process, to guide decisions. Decision-makers have limited knowledge and training in areas of decision-making in the areas of health informatics, health economics and especially HTA. This may limit their ability to truly understand the future implications of their purchase decisions.

To foster HTA in decision-making processes, recommendations are made, in particular, to: (i) establish an HTA in-house unit, able to carry out studies considering the hospital context and aiming to inform managerial local decisions (ii) promote a team comprised of technology assessment multidisciplinary researchers but also professionals from the health institution able to carry out HTA studies (iii) foster common languages and values to increase uptake of HTA studies.