Estimation of the shielding ability of a tungsten functional paper for diagnostic x-rays and gamma rays.
Estimation of the shielding ability of a tungsten functional paper for diagnostic x-rays and gamma rays.
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DOI：
10.1002/acm2.12122
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发表时间：
2017-09
影响因子：
2.1
通讯作者：
Hiraoka M
中科院分区：
文献类型：
--
作者：
Monzen H;Kanno I;Fujimoto T;Hiraoka M
钨功能纸（TFP）是一种新型纸基辐射屏蔽材料。我们测量了TFP对X射线和伽马射线的屏蔽能力。TFP以0.3 mm厚的片材提供，其包含80质量%的钨粉和20质量%的纤维素（C6 H10 O 5）。在X射线（60、80、100和120 kVp）的剂量测量中，我们测量了穿过1、2、3、5、10和12个TFP片以及0.3和0.5 mm铅后的剂量。在铅当量测量中，我们测量了X射线（100和150 kVp）穿过2和10个TFP片后的剂量，以及铯-137源（662 keV）伽马射线穿过0、7、10、20和30个TFP片后的剂量。然后，通过与标准铅板（纯度>99.9%）照射后的剂量比较，确定了TFP的铅当量厚度。此外，我们使用50 kVp X射线的计算机X线摄影图像板评价了TFP透射剂量的均匀性。发现单个TFP片材对X射线（60、80、100和120 kVp）的屏蔽能力分别为65%、53%、48%和46%。对于100和150 kVp X射线，两个TFP片的铅当量厚度分别为0.10 ± 0.02、0.09 ± 0.02 mmPb，10个TFP片的铅当量厚度分别为0.48 ± 0.02和0.51 ± 0.02 mmPb。7、10、20和30片TFP对铯-137源伽马射线的铅当量厚度估计为0.28、0.43、0.91和1.50 mmPb，误差为± 0.01 mm。1片TFP具有不均匀性，但7片TFP对50 kVp X射线提供完全屏蔽。TFP对诊断成像领域所用能量范围内的X射线和伽马射线具有足够的辐射屏蔽能力。
Tungsten functional paper (TFP) is a novel paper‐based radiation‐shielding material. We measured the shielding ability of TFP against x‐rays and gamma rays. The TFP was supplied in 0.3‐mm‐thick sheets that contained 80% tungsten powder and 20% cellulose (C6H10O5) by mass. In dose measurements for x‐rays (60, 80, 100, and 120 kVp), we measured doses after through 1, 2, 3, 5, 10, and 12 TFP sheets, as well as 0.3 and 0.5 mm of lead. In lead equivalence measurements, we measured doses after through 2 and 10 TFP sheets for x‐rays (100 and 150 kVp), and 0, 7, 10, 20, and 30 TFP sheets for gamma rays from cesium‐137 source (662 keV). And then, the lead equivalent thicknesses of TFP were determined by comparison with doses after through standard lead plates (purity >99.9%). Additionally, we evaluated uniformity of the transmitted dose by TFP with a computed radiography image plate for 50 kVp x‐rays. A single TFP sheet was found to have a shielding ability of 65%, 53%, 48%, and 46% for x‐rays (60, 80, 100, and 120 kVp), respectively. The lead equivalent thicknesses of two TFP sheets were 0.10 ± 0.02, 0.09 ± 0.02 mmPb, and of ten TFP sheets were 0.48 ± 0.02 and 0.51 ± 0.02 mmPb for 100 and 150 kVp x‐rays, respectively. The lead equivalent thicknesses of 7, 10, 20, and 30 sheets of TFP for gamma rays from cesium‐137 source were estimated as 0.28, 0.43, 0.91, and 1.50 mmPb with an error of ± 0.01 mm. One TFP sheet had nonuniformity, however, seven TFP sheets provided complete shielding for 50 kVp x‐rays. TFP has adequate radiation shielding ability for x‐rays and gamma rays within the energy range used in diagnostic imaging field.
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影响因子：
3.8
作者：
Christodoulou, EG;Goodsitt, MM;Chan, HP
通讯作者：
Chan, HP
影响因子：
3.8
作者：
McCaffrey, J. P.;Shen, H.;Mainegra-Hing, E.
通讯作者：
Mainegra-Hing, E.
影响因子：
2.8
作者：
Ross, AM;Segal, J;Cho, SA
通讯作者：
Cho, SA
影响因子：
3.8
作者：
McCaffrey, J. P.;Mainegra-Hing, E.;Shen, H.
通讯作者：
Shen, H.
影响因子：
19.7
作者：
MURPHY, PH;WU, YX;GLAZE, SA
通讯作者：
GLAZE, SA