A radiophotoluminescent (RPL) glass dosimeter is used for the radiation dosimetry in various energy. The measurement principles and properties of a RPL glass are similar to a thermoluminescent dosimeter (TLD). The commercialized system is composed of the RPL glass rod dosimeter (GRD) and the reading system 2. The RPL GRD has the variation in the reading value such as TLD. This paper reports the variation from the reading system in dosimetry of radiotherapy. It is difficult to calculate the amount of the RPL, and it is known there is a proportional relation between the absorbed dose and the amount. Therefore the reading value was regarded as the total absorbed dose in the excitation area. The reading value was estimated from the absorbed dose calculated by EGS4.The reading value was estimated from the absorbed dose calculated by EGS4 and the absorbed dose was the total absorbed dose in the area of reading out that was in the absorbed dose distribution in the glass. The variation of the reading value was about 1 %, because the automatic reading system does not read the RPL at the same position every time. However, the magnitude of the variation is small. Therefore the accuracy of a measurement would not widely be affected.
|Number of pages||5|
|Publication status||Published - 2006|
|Event||13th EGS Users' Meeting in Japan 2006 - Tsukuba, Japan|
Duration: 2006 Aug 8 → 2006 Aug 10
|Other||13th EGS Users' Meeting in Japan 2006|
|Period||06/8/8 → 06/8/10|
ASJC Scopus subject areas