[en] Audit is an ongoing review of all processes involving a particular service to ensure that each process is developed systematically and in accordance with specific regulations. The IAEA developed an internal audit process named QUANUM - Quality Management Audits in Nuclear Medicine and available in their website. This tool offers support to management quality audits, assisting teams in the evaluation of quality management system. QUANUM tool was developed based on the European Community guidelines and international recommendations. In order to be better applied in a country, national regulations should be followed not to generate non-conformities. Based on the current legal framework a review was performed under light of the normative items from national regulators which should be in compliance with the international recommendations. Also, national requirements not addressed by international recommendations were considered. Therefore, a single model was designed to meet both requirements, national and international standards and regulations. An Internal Audit model was elaborated helping to quantify risk levels concerned to the process as a whole demonstrating that national regulations meet 0,63 % of the international QUANUM requirements This tool systematizes and improves the quality management policy and, at last, be able to attend the Regulatory Audit, minimizing non-conformities. (author)