Electron accelerators operating above about 10 MeV produce significant quantities of photoneutrons. This is not a new problem and was first reported by Laughlin1 in 1951 for a 23 MeV betatron. In recent years it has drawn considerable attention because of the increased use of higher-energy electron linear accelerators for radiation therapy and also because of the increased awareness of radiatio...

Background:  The aim of the study was to estimate the radiation dose during emergency exposure to patients treated with iodine-131 during the isolation period. Materials and Methods: The dose rate from a sample of 192 patients administrated by three different radioactivity of 131I (3.7, 5.55 and 7.4 GBq) was measured, at 1 meter after 1, 24 and 48 hours post dose administration, at three d...

INTRODUCTION Fluoroscopy-guided intervention during percutaneous nephrolithotomy (PCNL) has become the order of the day. During this procedure, both the patient and the physician are exposed to some radiation. Measurement of radiation doses in patients and personnel are important. Patient radiation doses are used for comparison with other centers for achieving the best possible radiation practi...

The effect of three doses UV-C radiation (1, 3 and 6 kJ m−2) on conservation potential after harvest the Deglet-Nour date for five months storage at 10 °C was studied. Contents water, total sugar, carotenoids, proteins, polyphenols, flavonoids condensed tannins, as well browning index, enzyme activities polyphenoloxidase peroxidase antioxidant capacity samples were monitored during using standa...

BACKGROUND PET/CT imaging using [18F]-FDG is utilized in clinical oncology for tumor detecting, staging and responding to therapy procedures. Essential consideration must be taken for radiation staff due to high gamma radiation in PET/CT and cyclotron center. The aim of this study was to assess the staff exposure regarding whole body and organ dose and to evaluate environment dose in PET/CT and...

patients and methods we evaluated radiation exposure from initial and downstream testing in a prospectively collected, matched cohort evaluated for cp in the emergency department (ed) with either ccta compared with usual care over a median follow-up of 19.6 months. effective radiation dose was calculated using published conversion factors. results prospective, ecg-triggered acquisition using a ...

Background: Radiology staff needs to justify the radiation exposures in order to protect themselves and others from radiation risks. The aims of this study were to examine the awareness level of radiation dose and protection amongst radiographers and to compare their performance between major Jordanian hospitals. Materials and Methods: A cross-sectional survey was conducted in 4 major Jord...

the green synthesis of metallic nanoparticles is an active research area in nanotechnology. in the present study, antioxidant potential, total reducing capacity and silver nanoparticles (ag nps) synthetic potential of methanolic leaf extracts of seven plant species were evaluated and compared. antioxidant capacity, expressed as µmol trolox equivalents g-1 dw (µmol te g-1 dw), ranged from 116.0 ...