Chida K, Morishima Y, Masuyama H, Chiba H, Katahira Y, Inaba Y, Mori I, Maruoka S, Takahashi S, Kohzuki M, Zuguchi M
Department of Radiological Technology, School of Health Sciences, Faculty of Medicine, Tohoku University, Aoba-ku, Sendai, Japan.
Acta Radiol. 2009 Mar;50(2):170-3. doi: 10.1080/02841850802616745.
Currently, one or two dosimeters are used to monitor radiation exposure in most cardiac laboratories. In addition, several different formulas are used to convert exposure data into an effective dose (ED).
To clarify the effect of monitoring methods and formula selection on the estimated ED for physicians during percutaneous coronary interventions (PCIs).
The ED of physicians during cardiac catheterization was determined using an optically stimulated luminescence dosimeter (Luxel badge). Two Luxel badges were worn: one beneath a personal lead apron (0.35-mm lead equivalent) at the chest and one outside of the apron at the neck.
The difference in the average ED of seven physicians was approximately fivefold (range 1.13-5.43 mSv/year) using the six different formulas in the clinical evaluation. The estimated physician ED differed markedly according to both the monitoring method and formula selected.
ED estimation is dependent on both the monitoring method and the formula used. Therefore, it is important that comparisons among laboratories are based on the same monitoring method and same formula for calculating the ED.
目前，大多数心脏实验室使用一到两个剂量计来监测辐射暴露。此外，还使用几种不同的公式将暴露数据转换为有效剂量（ED）。
阐明监测方法和公式选择对经皮冠状动脉介入治疗（PCI）期间医生估计有效剂量的影响。
使用光激励发光剂量计（Luxel徽章）测定心脏导管插入术期间医生的有效剂量。佩戴两个Luxel徽章：一个佩戴在胸部个人铅围裙（铅当量0.35毫米）下方，另一个佩戴在围裙外颈部。
在临床评估中，使用六种不同公式时，七位医生的平均有效剂量差异约为五倍（范围为1.13 - 5.43 mSv/年）。根据所选的监测方法和公式，估计的医生有效剂量有显著差异。
有效剂量估计既取决于监测方法，也取决于所使用的公式。因此，各实验室之间基于相同监测方法和相同公式计算有效剂量进行比较非常重要。
