Mavrikou I, Kottou S, Tsapaki V, Neofotistou V
Medical Physics Department, Athens General Hospital, 154 Mesogion Avenue, Athens, Greece.
Radiat Prot Dosimetry. 2008;129(1-3):67-70. doi: 10.1093/rpd/ncn005. Epub 2008 Mar 12.
Interventional cardiology procedures are usually associated with high patient doses and even deterministic radiation effects may occur. Expensive digital flat panels are preferably used to lower doses, and Athens General Hospital has recently installed one. However, this study shows that it is the cardiologists' practice that lowers patients' doses. Doses delivered to patients during two time periods (pre and after radiation protection training) on a total of 1196 coronary angiographies and 506 percutaneous transluminal coronary angioplasties were measured and analysed per cardiologist. Local reference levels (LRLs) were assessed and compared with the preliminary RLs provided by the European Research Program DIMOND. Results showed that although after the training patients' dose area product, fluoroscopy time, cumulative dose and number of images acquired were lowered, the situation remained unchanged for the cardiologist who delivered the highest doses. The question to answer next is how this bad practice can be prevented since no dose constraints apply to diagnostic or therapeutic procedures using ionising radiation.
介入心脏病学手术通常伴随着高患者剂量，甚至可能出现确定性辐射效应。昂贵的数字平板被优先用于降低剂量，雅典总医院最近安装了一台。然而，这项研究表明，是心脏病专家的操作降低了患者剂量。对每位心脏病专家在两个时间段（辐射防护培训前后）进行的总共1196例冠状动脉造影和506例经皮冠状动脉腔内血管成形术期间给予患者的剂量进行了测量和分析。评估了当地参考水平（LRLs）并与欧洲研究项目DIMOND提供的初步参考水平进行了比较。结果表明，尽管培训后患者的剂量面积乘积、透视时间、累积剂量和采集的图像数量有所降低，但剂量最高的心脏病专家的情况仍未改变。接下来要回答的问题是，由于对于使用电离辐射的诊断或治疗程序没有剂量限制，如何才能防止这种不良操作。
