Wieser A, Debuyst R, Fattibene P, Meghzifene A, Onori S, Bayankin S N, Brik A, Bugay A, Chumak V, Ciesielski B, Hoshi M, Imata H, Ivannikov A, Ivanov D, Junczewska M, Miyazawa C, Penkowski M, Pivovarov S, Romanyukha A, Romanyukha L, Schauer D, Scherbina O, Schultka K, Sholom S, Skvortsov V, Stepanenko V, Thomas J A, Tielewuhan E, Toyoda S, Trompier F
Institute of Radiation Protection, GSF-National Research Centre for Environment and Health, D-85758 Neuherberg, Germany.
Radiat Prot Dosimetry. 2006;120(1-4):176-83. doi: 10.1093/rpd/nci549. Epub 2006 May 15.
The objective of the Third International Intercomparison on EPR Tooth Dosimetry was to evaluate laboratories performing tooth enamel dosimetry <300 mGy. Final analysis of results included a correlation analysis between features of laboratory dose reconstruction protocols and dosimetry performance. Applicability of electron paramagnetic resonance (EPR) tooth dosimetry at low dose was shown at two applied dose levels of 79 and 176 mGy. Most (9 of 12) laboratories reported the dose to be within 50 mGy of the delivered dose of 79 mGy, and 10 of 12 laboratories reported the dose to be within 100 mGy of the delivered dose of 176 mGy. At the high-dose tested (704 mGy) agreement within 25% of the delivered dose was found in 10 laboratories. Features of EPR dose reconstruction protocols that affect dosimetry performance were found to be magnetic field modulation amplitude in EPR spectrum recording, EPR signal model in spectrum deconvolution and duration of latency period for tooth enamel samples after preparation.
第三次电子顺磁共振牙齿剂量测定国际比对的目的是评估进行剂量小于300 mGy的牙釉质剂量测定的实验室。结果的最终分析包括实验室剂量重建方案的特征与剂量测定性能之间的相关性分析。在79和176 mGy这两个应用剂量水平下，展示了电子顺磁共振（EPR）牙齿剂量测定在低剂量下的适用性。大多数（12个中的9个）实验室报告的剂量在79 mGy的输送剂量的50 mGy范围内，12个实验室中的10个报告的剂量在176 mGy的输送剂量的100 mGy范围内。在高剂量测试（704 mGy）中，10个实验室的结果在输送剂量的25%以内。发现影响剂量测定性能的EPR剂量重建方案的特征包括EPR谱记录中的磁场调制幅度、谱反卷积中的EPR信号模型以及牙釉质样品制备后的潜伏期持续时间。
