The European ALARA Network
The European ALARA Network (EAN) promotes the optimisation of radiation protection (keeping exposures As Low As Reasonably Achievable – ALARA) across Europe. It brings together professionals, regulators, and stakeholders to share experience, develop guidance, and support the practical implementation of ALARA principles in various sectors, including industry, medicine, research, and the environment.

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Author: D. Célier (ASN, France)

In March 2009, ASN was requested by the French Agency for the Safety of Health Products (AFSSAPS, the French competent authority for biomedical research), for advice about a proposed clinical trial intended to evaluate a PET tracer to diagnose Alzheimer's disease (AD). This test involves not only the participation of AD patients, but also of healthy volunteers, all aged 60 years or over. The protocol involves 2 PET-CT examinations, issuing a total effective dose of 18 mSv (F-18 + CT).