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Fabrication of anthropomorphic phantoms for use in total body irradiations studies

Published online by Cambridge University Press:  07 October 2019

Shaghayegh F. Monzari ,
Ghazale Geraily Open the ORCID record for Ghazale Geraily [Opens in a new window] ,
Tahereh Hadisi nia ,
Soraya Salmanian ,
Heydar Toolee  and
Mostafa Farzin
Shaghayegh F. Monzari
Affiliation:
Medical Physics Department, Tehran University of Medical Science, Tehran, Iran
Ghazale Geraily*
Affiliation:
Medical Physics Department, Tehran University of Medical Science, Tehran, Iran Cancer Institute of Imam Khomeini Hospital, Tehran University of Medical Science, Tehran, Iran
Tahereh Hadisi nia
Affiliation:
Medical Physics Department, Tehran University of Medical Science, Tehran, Iran
Soraya Salmanian
Affiliation:
Radiation Oncology Department, Iran University of Medical Science, Iran Gamma Knife Center, Tehran, Iran
Heydar Toolee
Affiliation:
Anatomy Department, Tehran University of Medical Science, Tehran, Iran
Mostafa Farzin
Affiliation:
Cancer Institute of Imam Khomeini Hospital, Tehran University of Medical Science, Tehran, Iran
*
Author for Correspondence: Ghazale Geraily, Medical Physics Department, Iran Gamma Knife Center, Tehran University of Medical Science, Tehran, Iran. Tel: +989124308726. E-mail: [email protected]
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Abstract

Purpose:

The aim of this study was to produce a low-cost anatomical model of adult male including lower limbs to evaluate the three-dimensional dose distribution for dosimetry measurements, especially in total body irradiation (TBI) and total skin electron therapy (TSET).

Materials and methods:

Computed tomography (CT) scan images of the atomic energy organisation RANDO phantom and lower limb CT scan images of 20 healthy persons were averaged. Selections of different body tissues substitute materials and phantom validation were performed according to previous studies worked on construction of radiation therapy phantoms.

Results:

The dosimetry aspect of the selected substitute materials from all considered methods showed that they were in good agreement with real human tissue, especially bone, with a percentage error of 0·5%. The results show that the electron densities obtained from the linear attenuation coefficient (reDLAC) for the tissue equivalent material used in the phantom is a better option for validation.

Conclusions:

This validated phantom has numerous advantages over the origin type of RANDO phantom. Therefore, using it in TBI and TSET dosimetry is recommendable.

Keywords

dosimetryRANDO phantomTBITSET
Type
Original Article
Information
Journal of Radiotherapy in Practice , Volume 19 , Issue 3 , September 2020 , pp. 242 - 247
Copyright
© Cambridge University Press 2019

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