Evaluation of effective energy for QA and QC: Measurement of half-value layer using radiochromic film density

2009 ◽  
Vol 32 (1) ◽  
pp. 26-29 ◽  
Author(s):  
T. Gotanda ◽  
T. Katsuda ◽  
R. Gotanda ◽  
A. Tabuchi ◽  
K. Yamamoto ◽  
...  
2011 ◽  
Vol 34 (2) ◽  
pp. 213-222 ◽  
Author(s):  
T. Gotanda ◽  
T. Katsuda ◽  
R. Gotanda ◽  
A. Tabuchi ◽  
K. Yamamoto ◽  
...  

2016 ◽  
Vol 22 (4) ◽  
pp. 85-92 ◽  
Author(s):  
Tatsuhiro Gotanda ◽  
Toshizo Katsuda ◽  
Rumi Gotanda ◽  
Tadao Kuwano ◽  
Takuya Akagawa ◽  
...  

Abstract 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.


Author(s):  
Tatsuhiro Gotanda ◽  
Toshizo Katsuda ◽  
Rumi Gotanda ◽  
Takuya Akagawa ◽  
Tadao Kuwano ◽  
...  

2004 ◽  
Vol 60 (11) ◽  
pp. 1533-1542 ◽  
Author(s):  
HIDEKI AOYAMA ◽  
YOSHIHARU AZUMA ◽  
SACHIKO GOTO ◽  
SEIJI TAHARA ◽  
HIROFUMI UNO ◽  
...  

2012 ◽  
Vol E95-C (2) ◽  
pp. 303-308
Author(s):  
Jae Kwang LIM ◽  
Heung-Sik TAE ◽  
Byungcho CHOI ◽  
Seok Gi KIM

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