ArticleFrontiers in medicine2026
Diffusion dynamics of technological innovations in health: the case of an innovative medical imaging technology in France.
Article in Frontiers in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Objectives: Reports from France's Cour des Comptes highlight a lack of aggregate data on medical imaging use. This study aims to (1) map the diffusion of PET-CT technology in France (2013-2022) and (2) identify the multi-level contextual factors explaining its uneven diffusion and utilization. Methods: We employed a phased, mixed-methods design. First, we consolidated quantitative data from national databases to create aggregate proxy indicators for supply, demand, and procedures. Second, we conducted 39 semi-structured interviews with a stratified, purposive sample of key stakeholders (regulators, clinicians) and analyzed them using inductive thematic analysis. Results: The supply of PET-CT technology has expanded coherently nationwide. However, its actual use varies significantly between regions, a disparity not explained by supply or epidemiological demand. This 'supply-use' gap is driven by interconnected factors: institutional (decentralized/distributed governance, delayed recommendations), organizational (competing 'research' vs. 'access' models of care), and professional (individual physician beliefs, variable participation in MDTs). Conclusion: The diffusion of PET-CT in France challenges a purely rational model, going beyond simple supply-demand logic. It is a complex process where local institutional, organizational, and professional contexts shape trajectories. Understanding these determinants is urgent for developing equitable health policy and addressing public health challenges in nuclear medicine.
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