Geant4 is a versatile Monte Carlo radiation transport simulation toolkit with steep learning curve. This work introduces user-code called M-TAG (Modular Radiation Teaching-Aid for Geant4), built on top of Geant4. designed to help gradually introduce the new users.The goal record quantities from simulated as it transported through geometries. simplifies inclusion geometric elements and detector ...

The aim of this report is to present a new two-piece thyroid-neck phantom produced by the concurrent use of epoxy resin and poly(methyl methacrylate) (PMMA: plexiglass) soft tissue equivalent materials. Accordingly, mass attenuation coefficients of the epoxy resin and the plexiglass compounds were obtained from simulation (NIST XCOM 3.1) and measurements (practical dosimetry) and compared to th...

The mechanical and radiation shielding properties for the PbO–MoO3–Li2O–B2O3 glass system were theoretically investigated in this paper. (coded as glasses) was fabricated using melt quenching mechanism. optical packing density (OPD) increases from 75.563 to 84.366, oxygen molar volume (OMV) decreases 13.234 11.853 cm3/mol when increasing PbO concentration. values of elastic moduli decreased 47....

Abstract Radiation and nuclear technologies have side effects in addition to their important applications, so appropriate shields must be used protect users the public from high doses as a result of exposure this radiation. In work, attenuation coefficients for polyester composites doped with waste iron filings (IFs) were studied. Six samples different IF concentrations manufactured, namely, Po...

  In present PET/CT scanners, PET attenuation correction is performed by relying on the information given by CT scan. In the CT-based attenuation correction methods, dual-energy technique (DECT) is the most accurate approach, which has been limited due to the increasing patient dose. In this feasibility study, we have introduced a new method that can implement dual-en...

Radyasyon günlük hayatta birçok alanda,kullanılan pek çok teknolojik alette karşımıza çıkan ve fazla maruz kalındığı takdirde ölümcül sonuçlar doğurabilen bir enerjidir.Aynı zamanda gelişen dünyanın artan enerji ihtiyacını karşılayabilmek için her gün farklı yerinde yeni nükleer santralleri inşa edilmektedir.Dolayısıyla hem kullanılan aletler de yapılan bazında artış olması,gün geçtikçe insanoğ...

PURPOSE This study was performed to investigate the accuracies of the synthesized monochromatic images and effective atomic number maps obtained with the new GE Discovery CT750 HD CT scanner. METHODS A Gammex-RMI model 467 tissue characterization phantom and the CT number linearity section of a Phantom Laboratory Catphan 600 phantom were scanned using the dual energy (DE) feature on the GE CT...

Introduction: MRI-only treatment planning (TP) can be advantageous in paediatric radiotherapy. However, electron density extraction is necessary for dose calculation. Normally, after bone segmentation, a bulk density is assigned. However, the variation of bone bulk density in patients makes the creation of pseudo CTs challenging. This study aims to assess the effects of bone den...