Costa F, Teles P, Nogueira A, Barreto A, Santos A I, Carvalho A, Martins B, Oliveira C, Gaspar C, Barros C, Neves D, Costa D, Rodrigues E, Godinho F, Alves F, Cardoso G, Cantinho G, Conde I, Vale J, Santos J, Isidoro J, Pereira J, Salgado L, Rézio M, Vieira M, Simãozinho P, Almeida P, Castro R, Parafita R, Pintão S, Lúcio T, Reis T, Vaz P
Instituto Tecnológico e Nuclear, Campus Tecnológico e Nuclear, Universidade Técnica de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
Instituto Tecnológico e Nuclear, Campus Tecnológico e Nuclear, Universidade Técnica de Lisboa, Estrada Nacional 10 (km 139,7), 2695-066 Bobadela LRS, Portugal.
Rev Esp Med Nucl Imagen Mol. 2015 Jan-Feb;34(1):1-8. doi: 10.1016/j.remn.2014.03.009. Epub 2014 Jun 17.
In 2009-2010 a Portuguese consortium was created to implement the methodologies proposed by the Dose Datamed II (DDM2) project, aiming to collect data from diagnostic X-ray and nuclear medicine (NM) procedures, in order to determine the most frequently prescribed exams and the associated ionizing radiation doses for the Portuguese population. The current study is the continuation of this work, although it focuses only on NM exams for the years 2011 and 2012.
The annual frequency of each of the 28 selected NM exams and the average administered activity per procedure was obtained by means of a nationwide survey sent to the 35 NM centres in Portugal.
The results show a reduction of the number of cardiac exams performed in the last two years compared with 2010, leading to a reduction of the annual average effective dose of Portuguese population due to NM exams from 0.08 mSv ± 0.017 mSv/caput to 0.059 ± 0.011 mSv/caput in 2011 and 0.054 ± 0.011 mSv/caput in 2012. Portuguese total annual average collective effective dose due to medical procedures was estimated to be 625.6 ± 110.9 manSv in 2011 and 565.1 ± 117.3 manSv in 2012, a reduction in comparison with 2010 (840.3 ± 183.8 manSv).
The most frequent exams and the ones that contributed the most for total population dose were the cardiac and bone exams, although a decrease observed in 2011 and in 2012 was verified. The authors intend to perform this study periodically to identify trends in the annual Portuguese average effective dose and to help to raise awareness about the potential dose optimization.
2009 - 2010年，一个葡萄牙财团成立，以实施剂量数据医学II（DDM2）项目提出的方法，旨在收集来自诊断性X射线和核医学（NM）程序的数据，以便确定葡萄牙人群最常开具的检查项目以及相关的电离辐射剂量。本研究是这项工作的延续，不过它仅聚焦于2011年和2012年的核医学检查。
通过向葡萄牙的35个核医学中心发送全国性调查问卷，获取28项选定核医学检查中每项检查的年频率以及每个程序的平均给药活度。
结果显示，与2010年相比，过去两年中心脏检查的数量有所减少，这导致葡萄牙人群因核医学检查的年平均有效剂量从2011年的0.08 mSv ± 0.017 mSv/人降至0.059 ± 0.011 mSv/人，2012年降至0.054 ± 0.011 mSv/人。2011年因医疗程序导致的葡萄牙年总平均集体有效剂量估计为625.6 ± 110.9人Sv，2012年为565.1 ± 117.3人Sv，与2010年（840.3 ± 183.8人Sv）相比有所减少。
最常进行的检查以及对总人群剂量贡献最大的检查是心脏和骨骼检查，不过在2011年和2012年观察到有所减少。作者打算定期开展这项研究，以确定葡萄牙年平均有效剂量的趋势，并有助于提高对潜在剂量优化的认识。
