Stepanenko V F, Skvortsov V G, Ivannikov A I, Kondrashov A E, Vaichulis P P, Denisenko O N, Kozlov V A, Khamidova L G, Tikunov D D, Panfilov A P, Eichhozff U
Medical Radiological Research Center RAMS, Obninsk, Russia.
Appl Radiat Isot. 1996 Nov-Dec;47(11-12):1359-63. doi: 10.1016/s0969-8043(96)00187-x.
Mixtures of small fragments of tooth enamel as well as thermoluminescence (TL) dosimeters were placed into the tissue-equivalent phantom of the human head with skeleton (approximately at the level of the jaws) and irradiated using 137Cs low dose-rate gamma therapeutic sources ('SELEKTRON' LDR 137Cs). Phantom, samples of teeth and TL detectors were irradiated behind water tank to produce scattered irradiation. The same irradiation with the same geometry was performed in air too. For gamma-spectrometry 137Cs sources with very low activity were used but with the same geometry as therapeutic sources. The absorbed dose in enamel was estimated with the help of ESR spectrometer 'ESP-300 E' (Brucker). The samples of tooth enamel were partially used for preliminary dose evaluation by ESR signal before starting of experiment. TL dosimetry was performed by TL reader model 8800 (HARSHAW) using TL dosimeters calibrated with 137Cs. The paper presents data obtained in comparative aspects.
将牙釉质小碎片混合物以及热释光（TL）剂量计放入带有骨骼的人头组织等效体模（大致在颌骨水平）中，并用137Cs低剂量率伽马治疗源（“SELEKTRON”LDR 137Cs）进行照射。体模、牙齿样本和TL探测器在水箱后进行照射以产生散射辐射。同样的照射和几何条件也在空气中进行。对于伽马能谱分析，使用了活性极低但几何条件与治疗源相同的137Cs源。借助ESR光谱仪“ESP - 300 E”（布鲁克公司）估算牙釉质中的吸收剂量。在实验开始前，部分牙釉质样本用于通过ESR信号进行初步剂量评估。使用经137Cs校准的TL剂量计，通过8800型TL读数器（哈肖公司）进行热释光剂量测定。本文展示了在比较方面获得的数据。
