Journal of Medical Physics
TECHNICAL NOTE
Year
: 2016  |  Volume : 41  |  Issue : 4  |  Page : 266--270

Simplified method for creating a density-absorbed dose calibration curve for the low dose range from Gafchromic EBT3 film


Tatsuhiro Gotanda1, Toshizo Katsuda2, Rumi Gotanda3, Tadao Kuwano4, Takuya Akagawa5, Nobuyoshi Tanki2, Akihiko Tabuchi6, Tetsunori Shimono1, Yasuyuki Kawaji1 
1 Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University, Fukuoka, Japan
2 Department of Radiological Technology, Faculty of Health Sciences, Butsuryo College of Osaka, Osaka, Japan
3 Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan
4 Department of Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan
5 Department of Radiological Technology, Tokushima Red Cross Hospital, Tokushima, Japan
6 Department of Radiology, Kawasaki Medical School Kawasaki Hospital, Okayama, Japan

Correspondence Address:
Tatsuhiro Gotanda
Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University, 1-1-1 Chikushigaoka, Minami-ku, Fukuoka 815-8510
Japan

Radiochromic film dosimeters have a disadvantage in comparison with an ionization chamber in that the dosimetry process is time-consuming for creating a density-absorbed dose calibration curve. The purpose of this study was the development of a simplified method of creating a density-absorbed dose calibration curve from radiochromic film within a short time. This simplified method was performed using Gafchromic EBT3 film with a low energy dependence and step-shaped Al filter. The simplified method was compared with the standard method. The density-absorbed dose calibration curves created using the simplified and standard methods exhibited approximately similar straight lines, and the gradients of the density-absorbed dose calibration curves were −32.336 and −33.746, respectively. The simplified method can obtain calibration curves within a much shorter time compared to the standard method. It is considered that the simplified method for EBT3 film offers a more time-efficient means of determining the density-absorbed dose calibration curve within a low absorbed dose range such as the diagnostic range.


How to cite this article:
Gotanda T, Katsuda T, Gotanda R, Kuwano T, Akagawa T, Tanki N, Tabuchi A, Shimono T, Kawaji Y. Simplified method for creating a density-absorbed dose calibration curve for the low dose range from Gafchromic EBT3 film.J Med Phys 2016;41:266-270


How to cite this URL:
Gotanda T, Katsuda T, Gotanda R, Kuwano T, Akagawa T, Tanki N, Tabuchi A, Shimono T, Kawaji Y. Simplified method for creating a density-absorbed dose calibration curve for the low dose range from Gafchromic EBT3 film. J Med Phys [serial online] 2016 [cited 2019 Jul 19 ];41:266-270
Available from: http://www.jmp.org.in/article.asp?issn=0971-6203;year=2016;volume=41;issue=4;spage=266;epage=270;aulast=Gotanda;type=0