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:: Volume 3, Issue 1 (6-2005) ::
Int J Radiat Res 2005, 3(1): 11-16 Back to browse issues page
Enhancement of MD-55-2 radiochromic film sensitivity using a multilayer film technique for applications in the low dose range
H. Pourbeigi , A.S. Meigooni , H. Ghafourian , R.A. Koona , M.H. Zahmatkesh
, hpour_ir@yahoo.com
Abstract:   (14991 Views)

 

ABSTRACT

Backgrounds: MD-55-2 is one of the Radiochromic film models with the sensitivity suitable for dose measurements ranging from 5 to 100 Gy.  However, this lower limit makes the film impractical for its applications in many areas such as brachytherapy source dosimetry.

Materials and methods: In this project, the useful range of the film has been extended by using a multilayer film technique. In this technique, single-, double-, and triple- layers of films were exposed to the doses ranging from 0.5 to 10 Gy using a Co-60 photon beam. Calibration curves for corresponding layers of films were obtained with a spectrophotometer using a 680nm wavelength.

Results: The results indicated that the sensitivities of double and triple layers were approximately 200% and 300%, respectively, higher than a single-layer film.  The impact of multilayer film arrangement on the energy dependence of the MD-55-2 Radiochromic film has also been examined using 100KVp, 80 KVp, and 6 MV X-ray beams. The results indicated an insignificant (within 5%) change in film responses with the beam energy.

Conclusion: Therefore, the multilayer technique enhances the Radiochromic film sensitivity and expands its application to the low dose range in field of brachytherapy source dosimetry. 

 

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Type of Study: Original Research | Subject: Radiation Biology
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H. Pourbeigi, A.S. Meigooni, H. Ghafourian, R.A. Koona, M.H. Zahmatkesh. Enhancement of MD-55-2 radiochromic film sensitivity using a multilayer film technique for applications in the low dose range . Int J Radiat Res. 2005; 3 (1) :11-16
URL: http://ijrr.com/article-1-117-en.html


Volume 3, Issue 1 (6-2005) Back to browse issues page
International Journal of Radiation Research
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