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首页> 外文期刊>Radiation Physics and Chemistry >Effectiveness of Al2O3:C OSL dosimeter towards entrance surface dose measurement in common X-ray diagnostics
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Effectiveness of Al2O3:C OSL dosimeter towards entrance surface dose measurement in common X-ray diagnostics

机译：Al2O3：C OSL剂量计对常见X射线诊断中的入射表面剂量测量的有效性

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摘要

We report the successful use of nanoDots Optically Stimulated Luminescence Dosimeters (OSLDs) for the determination of the entrance surface dose (ESD) in common X-ray diagnostics. ESD evaluation is made on six radiographic projections including abdomen (AP and LAT), chest (AP and PA), skull (AP), and thoracic spine (AP). Indirect and direct ESD measurements have been performed with and without whole-body anthropomorphic phantom using GE radiography system installed at the Diagnostic Imaging Laboratory, Universiti Kebangsaan Malaysia (UKM), wherein the International Atomic Energy Agency protocol (IAEA TRS-457) has been followed. The CALDose_X 5.0 software is used to calculate ESDs in these projections. The mean ESDs obtained with indirect measurements for AP abdomen, LAT abdomen, AP chest, PA chest, AP thoracic spine, and AP skull projections are 4.8, 8.3, 0.7, 0.2, 7.2, and 3.7 mGy respectively, and with direct measurements, the respective mean ESDs are 4.3, 8.3, 0.7, 0.3, 6.8, and 2.8 mGy. The values obtained by CALDose_X calculations are 8.3, NA, 1.1, 0.7, 8.8, and 4.5 mGy, respectively. Significant variations ranging from 18% to 59% are observed between measured and calculated ESDs, which are attributed to the difference in phantom size and field size. The overall uncertainty for direct measurements has a maximum of +/- 0.86 mGy compared to +/- 0.47 mGy for indirect measurement. Measured ESDs are within the IAEA and European Commission (EC) DRLs range, while calculated ESDs are slightly above the measured values. It is concluded that the use of nanoDots OSLD is beneficial for ESD measurement in routine X-ray examinations.
机译：我们报告了纳米蛋白的成功使用光学刺激的发光剂量计（OSLD），用于确定共同的X射线诊断中的入射表面剂量（ESD）。 ESD评估是在六个射线照相投影中进行，包括腹部（AP和LAT），胸部（AP和PA），颅骨（AP）和胸椎（AP）。使用安装在诊断成像实验室（UKM）的GE射线照相系统的全身拟杆状系统进行间接和直接ESD测量，其中遵循国际原子能机构议定书（IAEA TRS-457） 。 Caldose_x 5.0软件用于计算这些预测中的ESD。用AP腹部，LAT腹部，AP胸部，PA胸部，AP胸脊柱和AP骨脊柱和AP骨折和AP颅骨突出的间接测量获得的平均ESD分别为4.8,8.3,0.7,0.2,7.2和3.7 mgy，并直接测量各自的平均ESD为4.3,8.3,0.7,0.3,6.8和2.8麦戈。 CALDOSE_X计算获得的值分别为8.3，NA，1.1,0.7,8.8和4.5 MGY。在测量和计算的ESD之间观察到从18％到59％的显着变化，这归因于幻象尺寸和场大小的差异。直接测量的总体不确定性最多+/- 0.86 MGY，与+/- 0.47 MGY进行间接测量相比。测量的ESDS在原子能机构和欧盟委员会（EC）DRL系列内，而计算的ESD略高于测量值。结论是，使用纳米液OSLD对常规X射线检查中的ESD测量有益。

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