Effective energy measurement using radiochromic film: Application of a mobile scanner

Tatsuhiro Gotanda, Toshizo Katsuda, Rumi Gotanda, Tadao Kuwano, Takuya Akagawa, Nobuyoshi Tanki, Akihiko Tabuchi, Tetsunori Shimono, Yasuyuki Kawaji, Yoshihiro Takeda

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The effective energy calculated using the half-value layer (HVL) is an important parameter for quality assurance (QA) and quality control (QC). However constant monitoring has not been performed because measurements using an ionization chamber (IC) are time-consuming and complicated. To solve these problems, a method using radiochromic film (GAFCHROMIC EBT2 dosimetry film (GAF-EBT2) with slight energy dependency errors), a mobile scanner and step-shaped aluminum (SSAl) filter is developed. The results of the method using a mobile scanner were compared with those of the recommended method using an IC in order to evaluate its applicability. The difference ratios of the effective energies by each method using a mobile scanner with GAF-EBT2 were less than 5% compared with results of an IC. It is considered that this method offers a simple means of determining HVL for QA and QC consistently and quickly without the need for an IC dosimeter.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalPolish Journal of Medical Physics and Engineering
Issue number4
Publication statusPublished - Dec 1 2016


  • Radiochromic film
  • effective energy
  • flat bed scanner
  • half-value layer
  • mobile scanner

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging


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