Sá Dos Reis Cláudia, Fartaria Mário João, Garcia Alves João H, Pascoal Ana
Department of Medical Radiation Sciences, Curtin University, Perth, Western Australia.
Escola Superior de Tecnologia da Saúde de Lisboa/Instituto Politécnico de Lisboa (ESTeSL/IPL), Lisbon, Portugal.
Radiat Prot Dosimetry. 2018 Jun 1;179(4):391-399. doi: 10.1093/rpd/ncx300.
To characterise the mean glandular dose (MGD) in a sample of healthcare providers for digital mammography in Portugal. To compare the achieved values with European references. The MGD was measured on a poly-methyl-methacrylate phantom (45 mm) for each system using dosimeters. In addition, MGD was estimated using exposure settings collected from mammography exams in clinical context. Data were collected from 25 computed-radiography systems (CR) and 13 integrated digital (DR). For both measurements (phantom and clinical exposures), the average MGD for CR was higher compared to the DR. For CR the mean MGD was 1.85 mGy (CC projection) and 2.10 mGy (MLO projection). For DR systems the corresponding values were 1.54 mGy (CC) and 1.68 mGy (MLO). The average MGD obtained using both methods and for both technologies is within the acceptable reference range proposed by European guidelines (<2.5 mGy). Dose Reference Levels implementation should be the next step to optimise mammography practice in Portugal.
为了描述葡萄牙从事数字乳腺摄影的医疗保健人员样本中的平均腺体剂量（MGD）。将所获得的值与欧洲参考值进行比较。使用剂量计在每个系统的聚甲基丙烯酸甲酯体模（45毫米）上测量MGD。此外，利用从临床乳腺摄影检查中收集的曝光设置来估算MGD。数据收集自25台计算机X线摄影系统（CR）和13台集成数字系统（DR）。对于两种测量（体模和临床曝光），CR的平均MGD高于DR。对于CR，平均MGD在头尾位（CC）投照时为1.85毫戈瑞，在内外斜位（MLO）投照时为2.10毫戈瑞。对于DR系统，相应的值在CC位时为1.54毫戈瑞，在MLO位时为1.68毫戈瑞。使用两种方法和两种技术获得的平均MGD均在欧洲指南提出的可接受参考范围内（<2.5毫戈瑞）。实施剂量参考水平应是葡萄牙优化乳腺摄影实践的下一步举措。
