title: Simplified method for creating a density-absorbed dose calibration curve for the low dose range from Gafchromic EBT3 film.
abstract: 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.
authors.affiliation: Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University, Fukuoka, Japan.
authors.forename: Tatsuhiro
authors.initials: T
authors.lastname: Gotanda
authors.affiliation: Department of Radiological Technology, Faculty of Health Sciences, Butsuryo College of Osaka, Osaka, Japan.
authors.forename: Toshizo
authors.initials: T
authors.lastname: Katsuda
authors.affiliation: Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ibaraki, Japan.
authors.forename: Rumi
authors.initials: R
authors.lastname: Gotanda
authors.affiliation: Department of Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama, Japan.
authors.forename: Tadao
authors.initials: T
authors.lastname: Kuwano
authors.affiliation: Department of Radiological Technology, Tokushima Red Cross Hospital, Tokushima, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Akagawa
authors.affiliation: Department of Radiological Technology, Faculty of Health Sciences, Butsuryo College of Osaka, Osaka, Japan.
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Tanki
authors.affiliation: Department of Radiology, Kawasaki Medical School Kawasaki Hospital, Okayama, Japan.
authors.forename: Akihiko
authors.initials: A
authors.lastname: Tabuchi
authors.affiliation: Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University, Fukuoka, Japan.
authors.forename: Tetsunori
authors.initials: T
authors.lastname: Shimono
authors.affiliation: Department of Radiological Science, Faculty of Health Sciences, Junshin Gakuen University, Fukuoka, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kawaji
keywords: Calibration curve; diagnostic dose range; radiochromic film; step-shaped Al filter