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 tho...

Introduction: Craniospinal radiotherapy is a therapeutic technique for central nervous system (CNS) tumors, which requires meticulous attention to technique and dosimetry.Treatment planning system (TPS) is one of the main equipment in radiotherapy; therefore, the evaluation of its accuracy is essential for dose calculation. The present study evaluates the validity of Isogray TPS in craniospinal...

ABSTRACT Backgound: Digital radiography is an easy method of radiological examination, so many radiology technicians often use high exposure factors because they are considered to speed up when processing images, this can increase the risk excessive radiation doses in patients, currently index (IE) feedback for optimal images and low patients. Objective: evaluating Fujifilm (S-Value) entrance s...

Introduction Low dose rate brachytherapy sources have been widely used for interstitial implants in tumor sites, particularly in prostate. Dosimetric characteristics of a new IrSeed 125I brachytherapy source have been determined using the LiF thermoluminescent dosimeter (TLD) chips. Materials and Methods Dose rate constant, radial dose function, and anisotropy function around the IrSeed 125I so...

Background: The purpose of this study was to investigate the various gantry angle and SSD dependencies of TLD and MOSFET dosimeters. Materials and Methods: LiF (Mg) TLD and MOSFET were used in this study. Dosimeter systems were calibrated and then irradiated at various gantry angle and SSD by applying 6 MV photon energy. Results: Based on the results, MOSFET changes were found to be in 2% range...

Background: Small-field dosimetry remains an open challenge globally. Thus, it is crucial to consider adequate reference codes of practice for the performance dosimetry. Furthermore, as part good clinical practice, implementation new implies development a audit program. In this work, pilot dosimetric protocol established measuring absolute dose in water small fields using micro-TLDs LiF:Mg,Ti d...

The dosimetric characteristics of germanium (Ge) doped optical fibres are investigated as a potential alternative for electron beam therapy postal audits. 6 mol% Ge-doped fabricated cylindrical (CF) and flat (FF) established in terms signal fading, linearity dose-response, energy- dose rate dependence. Pilot audit study irradiations made with linear accelerator located at the Royal Surrey Count...

The present work compared the relative absorbed dose of some dosimetric materials, for energies 250 kV and 6 MV, using PENELOPE MNCPX codes. composition each material GD-301, TLD-100, MAGIC, MAGAT were simulated disposed in a phantom filled with water following reference conditions recommended by TRS-398 protocol. Percentage depth was used as parameter comparison. Since obtained results both co...