INTRODUCTION The recent progress in medical technology causes the decreases in the mortality rate of neonates with their birth weight less than 1,000g. Many X-ray examinations of neonates in NICU are usually done for various body size. The Frequencies of radiation exposure per neonate are high compared to general diagnosis for adults. It is important for radiation protection to consider that th...

The etiology of multiple sclerosis (MS) may involve exposure to infectious, chemical or physical agents damaging the blood-brain barrier and an autoimmune reaction against myelin breakdown products. Here we report a pooled analysis of 174 MS cases and 815 population controls from two case-control studies with regard to such a potentially damaging exposure, namely X-ray examinations, radiologica...

In this study, dose area product (DAP) measurements have been performed aiming at establishing diagnostic reference levels (DRLs) in paediatric intraoral dental radiology. Measurements were carried out at 52 X-ray units for all types of intraoral examinations performed in clinical routine. Not all X-ray units have pre-set child exposure settings with reduced exposure time or in some cases lower...

Dear Prof. Mozdarani,I would like to discuss about some important aspects regarding the article published in, "Iran. J. Radiat. Res., 2012 10(2): 89-94“ with title of “Patient doses from X-ray computed tomography examinations by a single-array detector unit: Axial versus spiral mode" by Ghavami et al. (1), so according to journal policy and in suitable manner please ask the authors to rep...

Background: X-ray computed tomography (CT) examinations deliver a significant amount of radiation doses to patients comparing to conventional radiography examinations. The objective of the current study was to analyze and investigate the average patient received dose from axial and spiral CT exams in a medical imaging center. Material and Methods: In this study, the patient imaging tec...

BACKGROUND There are differences in the reference diagnostic levels for the computed tomography (CT) of the chest as cited in different literature sources. The doses are expressed either in weighted CT dose index (CTDIVOL) used to express the dose per slice, dose-length product (DLP), and effective dose (E). The purpose of this study was to assess the radiation dose used in Low Dose Computer To...

Abstract A study was carried out on the mineral composition and free Iron oxides of sediments Tigris Euphrates river. Two soils were selected representing (Al-Numaniyah) river (Al-Shamiya), physical chemical analyzes conducted them, sand is separated by means a sieve whose openings are (53 microns) in presence absence into separations (53-2000) micrometers, to prepare them for metallurgical exa...