[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 12, Issue 2 (4-2014) ::
Int J Radiat Res 2014, 12(2): 169-178 Back to browse issues page
Design of homogeneous and heterogeneous human equivalent thorax phantom for tissue inhomogeneity dose correction using TLD and TPS measurements
S. Senthilkumar Dr.
Department of Radiotherapy, Madurai Medical College and Govt. Rajaji Hospital, Maduari-625 020, India , sasenthilgh@gmail.com
Abstract:   (7855 Views)

Background: The purpose of this study is to fabricate inexpensive in-house low cost homogeneous and heterogeneous human equivalent thorax phantom and assess the dose accuracy of the Treatment Planning Systems (TPS) calculated values for different lung treatment dosimetery. It is compared with Thermoluminescent Dosimeter (TLD) measurement. Materials and Methods: Homogeneous and heterogeneous thorax human equivalent phantoms were fabricated using bee’s wax (density=0.99 g/cm3) as a tissue simulating material, with inserts of cork (density=0.2 g/cm3) and Teflon (density=2 g/cm3) as lung and spine simulating material respectively. Lithium fluoride (LiF) TLD capsules were irradiated for different thoracic tumor treatment techniques using the locally fabricated homogeneous and heterogeneous phantoms. The 3D TPS calculated values of homogeneous and heterogeneous phantoms were compared with TLD measured values. Results: Experiments were carried out for different thoracic tumour treatment techniques for small and larger field sizes and also with and without wedge for Cobalt – 60 photon beams. Plato TPS were used to calculate the inhomogeneity for the homogeneous and heterogeneous phantoms. TLD and 3D TPS calculated values were found to have deviation of ± 5%. Conclusion: Both the homogeneous and heterogeneous phantoms has proved to be a valuable tools in the development and implementation of external beam radiotherapy (EBRT) in the clinical thorax region and in the verification of absolute dose and dose distributions in the regions of clinical and dosimetric interest.

Keywords: Homogeneous phantom, heterogeneous phantom, TLD, thoracic region tumour, TPS
Full-Text [PDF 951 kb]   (2411 Downloads)    
Type of Study: Original Research | Subject: Radiation Biology
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML     Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Senthilkumar S. Design of homogeneous and heterogeneous human equivalent thorax phantom for tissue inhomogeneity dose correction using TLD and TPS measurements. Int J Radiat Res. 2014; 12 (2) :169-178
URL: http://ijrr.com/article-1-1227-en.html


Volume 12, Issue 2 (4-2014) Back to browse issues page
International Journal of Radiation Research
Persian site map - English site map - Created in 0.04 seconds with 32 queries by YEKTAWEB 4319