The neutronics and radiation shielding issues were assessed for the ARIES-RS power plant. The assessment addresses the breeding level, service lifetime, radiation damage, shielding requirements and design, and personnel protection. Major efforts were devoted to fulfil the top-level requirements which include the demonstration of a closed tritium fuel cycle, generation of no radioactive waste gr...

Radio frequency (RF) interference and gradient induced eddy currents have been a major challenge in building a simultaneous PET/MRI system, a new carbon fiber composite material is found to be a good RF shield while introducing negligible gradient eddy currents. It also provides excellent structural support for the PET detector components. This material is therefore promising for the design of ...

Introduction: The heavyweight concretes have been widely used for constructing medical or industrial radiation facilities with photon sources. Materials and Methods: In this study, heavy concretes containing galena (PbS) and several borated minerals are proposed as suitable materials against photons. The shielding properties of 21 galena concretes containing seven borated minerals with three m...

Background: This paper presents a method to reduce radiation exposure during mammography by analysing the doses to ipsilateral and contralateral breasts and to adjacent organs by evaluating material-dependent shielding performance.  Materials and Methods: Six target-filter combinations (Mo-Mo, Mo-Rh, Rh-Rh, Rh-Mo, W-Mo, W-Rh) were tested by measuring the doses delivered to the breasts and adjac...

Thermoplastics elastomers, its processing and properties, electrical conductivity application as EMI shielding materials.

Background: This study investigated the γ-rays shielding properties of some building materials in Sudan has been investigated. Materials and Methods: Photons attenuation coefficients and half value layer (HVL) were experimented using Cs-137 and Co-60 sources.  The measurements were performed to gauge the intensity of radiation when performed unshielded, the specific thickness of selected sample...

The purpose of this experiment is to understand the interaction of radiation and matter, and the application to radiation detection and shielding. The inverse square law of the distance is demonstrated with the gamma radiation from Co 60 preparation, the halfvalue thickness and absorption coefficient of various materials determined with the narrow beam system and the corresponding mass attenuat...

Ordered mesoporous carbons (OMCs), obtained by nanocasting using ordered mesoporous silicas (OMSs) as hard templates, exhibit unique arrangements of ordered regular nanopore/nanowire mesostructures. Here, we used nanocasting combined with hot-pressing to prepare 10 wt% OMC/OMS/SiO2 ternary composites possessing various carbon mesostructure configurations of different dimensionalities (1D isolat...

PURPOSE Radiation therapy (RT) is frequently administered to prevent heterotopic ossification (HO) after total hip arthroplasty (THA). The purpose of this study was to determine if there is an increased risk of HO after RT prophylaxis with shielding of the THA components. METHODS AND MATERIALS This is a retrospective analysis of THA patients undergoing RT prophylaxis of HO at Brigham and Wome...

PURPOSE This study aims to investigate the factors that reduce fetal dose in pregnant patients with breast cancer throughout their radiation treatment. Two main factors in a standard radiation oncology center are considered as the treatment planning systems (TPSs) and simple shielding for intensity modulated radiation therapy technique. MATERIALS AND METHODS TPS factor was evaluated with two ...