Experimental Study of In-vivo Dosimetry Using Glass Rod Dosimeters to Minimize the Initialization View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2018-03-12

AUTHORS

Hosang Jeon, Jiho Nam, Jayoung Lee, Juhye Lee, Dahl Park, Wontaek Kim, Yongkan Ki, Donghyun Kim

ABSTRACT

In-vivo dosimetry, in which small detector elements are attached to a patient’s body, is an important technique for directly evaluating radiation treatment doses. The glass rod dosimeter (GRD) possesses several advantages over alternatives, which makes it one of the most useful detectors for in-vivo dosimetry. However, because the GRD initialization process requires a prolonged exposure at very high temperatures, as well as subsequent gradual quenching, each measurement takes approximately a day to complete. Therefore, we investigated the reliability of a GRD used repeatedly without initialization processes to improve efficiency. Ten doses of 0.5 Gy were delivered and read using three GRD elements. Then, the same procedure was performed for doses of 1.0 Gy. A readout error of less than 2% was maintained for up to three irradiation doses. However, the fluctuations in the readout data increased significantly as the number of irradiation doses increased. In addition, we discovered that the combined uncertainty of the readouts was influenced more heavily by the cumulative amount of irradiation than it was by the number of doses. Our results should provide guidance for accurate and efficient GRD use. More... »

PAGES

628-632

Identifiers

URI

http://scigraph.springernature.com/pub.10.3938/jkps.72.628

DOI

http://dx.doi.org/10.3938/jkps.72.628

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1101502351


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