用于测量诊断放射学中器官剂量的光激励发光剂量计的特性。
Characterization of optically stimulated luminescence dosemeters to measure organ doses in diagnostic radiology.
机构信息
Department of Radiology, Showa University Dental Hospital, Ota-ku, Tokyo, Japan.
出版信息
Dentomaxillofac Radiol. 2012 Mar;41(3):211-6. doi: 10.1259/dmfr/98708146. Epub 2011 Nov 24.
OBJECTIVE
The aim of this study was to assess the characteristics of an optically stimulated luminescence dosemeter (OSLD) for use in diagnostic radiology and to apply the OSLD in measuring the organ doses by panoramic radiography.
METHODS
The dose linearity, energy dependency and angular dependency of aluminium oxide-based OSLDs were examined using an X-ray generator to simulate various exposure settings in diagnostic radiology. The organ doses were then measured by inserting the dosemeters into an anthropomorphic phantom while using three panoramic machines.
RESULTS
The dosemeters demonstrated consistent dose linearity (coefficient of variation<1.5%) and no significant energy dependency (coefficient of variation<1.5%) under the applied exposure conditions. They also exhibited negligible angular dependency (≤ 10%). The organ doses of the X-ray as a result of panoramic imaging by three machines were calculated using the dosemeters.
CONCLUSION
OSLDs can be utilized to measure the organ doses in diagnostic radiology. The availability of these dosemeters in strip form proves to be reliably advantageous.
目的
本研究旨在评估一种用于诊断放射学的光激励发光剂量计（OSLD）的特性，并应用 OSLD 测量全景放射摄影中的器官剂量。
方法
使用 X 射线发生器模拟诊断放射学中的各种照射条件，检查基于氧化铝的 OSLD 的剂量线性度、能量依赖性和角度依赖性。然后，将剂量计插入人体模型中，同时使用三台全景机来测量器官剂量。
结果
在应用的照射条件下，剂量计表现出一致的剂量线性度（变化系数<1.5%）和无显著的能量依赖性（变化系数<1.5%）。它们还表现出可忽略的角度依赖性（≤10%）。使用剂量计计算了三台机器进行全景成像的 X 射线所致的器官剂量。
结论
OSLD 可用于测量诊断放射学中的器官剂量。这些剂量计以条带形式提供，具有可靠的优势。
Zotero 插件