Comparative Study of Absorbed Doses in Different Phantom Materials and Fabrication of a Suitable Phantom

Authors

  • M. A. Rahman BCSIR
  • Md. Tofajjol Hoseen Bhuiyan Pabna University of Science and Technology
  • M. M. Rahman Khwaja Yunus Ali Medical College & Hospital
  • M.N. Chowdhury University of Asia Pacific

DOI:

https://doi.org/10.18034/mjmbr.v5i1.444

Keywords:

Phantom, Dosimetry, Absorbed dose, Paraffin-wax, Scaling factor

Abstract

In Cancer treatment (radiotherapy) centers, Phantom is important in Quality Assurance routine check and absolute dosimetry conformation. Water is IAEA standard phantom material. But it has some technical difficulty in practical uses and other solid phantoms such as Polystyrene, PMMA is very expensive and locally not available. Hence, the purpose of this paper is to find out a phantom that will be technically very sound, cost effective and locally available. This study reveals that paraffin wax, which has some approximately similar properties (i.e. chemical composition, mass density and number of electrons/gram) to water, can be used as alternative of solid water phantom because of their proximity to the dose absorption property of water which is even better than some of the conventional solid phantoms used in radiation dosimetry. It is also found that paraffin wax phantom with air-bubble inside behaves differently to the radiation absorbing dose and therefore in dose absorption and dose conversion (scaling) factor.

 

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Author Biographies

  • M. A. Rahman, BCSIR

    Scientific Officer, Designated Reference Institute for Chemical Measurement (DRiCM), BCSIR, Dhaka-1205, BANGLADESH

  • Md. Tofajjol Hoseen Bhuiyan, Pabna University of Science and Technology

    Lecturer, Department of Physics, Pabna University of Science and Technology, Rajapur, Pabna-6600, BANGLADESH

  • M. M. Rahman, Khwaja Yunus Ali Medical College & Hospital

    Research Officer, Khwaja Yunus Ali Medical College & Hospital, Cancer Centre, Enayetpur, Sirajganj, BANGLADESH

  • M.N. Chowdhury, University of Asia Pacific

    Lecturer, Department of Basic Sciences and Humanities, University of Asia Pacific, Dhanmondhi, Dhaka, BANGLADESH

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Published

2018-06-30

Issue

Vol. 5 No. 1 (2018): January - June Issue

Section

Peer-reviewed Article

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How to Cite

Rahman, M. A. ., Bhuiyan, M. T. H. ., Rahman, M. M. ., & Chowdhury, M. . (2018). Comparative Study of Absorbed Doses in Different Phantom Materials and Fabrication of a Suitable Phantom . Malaysian Journal of Medical and Biological Research, 5(1), 19-24. https://doi.org/10.18034/mjmbr.v5i1.444