This work aimed to standardize and state” the insufficiencies outlined variation in image quality, among some hospitals Sudan for a common specific radiologic examinations. A subjective evaluation of 1,103 reproductions from “363 special procedures including Intravenous Urography (IVU), Hysterosalpingography (HSG), GIT barium studies” Micturating Cystourethrography (MCUG), Ent...

Abstract The cylindrical graphite cavity chambers are used for primary standard of air kerma rate of Co-60 and Cs-137. We measured wall attenuation correction factor (Kat) at several irradiation angles using extrapolation technique because of angular dependence. From these results, it can be seen that it is insufficient technique for evaluation of Kat. The Monte Carlo simulations were also done...

A key comparison has been made between the air-kerma standards of the ARPANSA, Australia and the BIPM in the mediumenergy x-ray range. The results show the standards to be in agreement within the expanded uncertainty for the comparison of 7.7 parts in 10 3 . No significant trend is observed in the results for the different radiation qualities. The results are analysed and presented in terms of ...

This study investigated the relationship between measured and console volume computed tomography dose index (CTDIvol) in multislice CT scanners. The CTDI values were determined from kerma length product using pencil ionization chamber inserted holes of standard phantoms with diameters 16 32 cm, which respectively mimic adult head body procedures recommended by International Electro-technical Co...

BACKGROUND AND PURPOSE Radiation exposure from neurointerventional procedures can be substantial, with risk of radiation injuries. We present the results of a follow-up program applied to potential skin injuries in interventional neuroradiology based on North American and European guidelines. MATERIALS AND METHODS The following guidelines approved in 2009 by SIR and CIRSE have been used over ...

The purpose of this study was to assess the level of patient radiation dose received in general fluoroscopy examinations, compare the findings with the international diagnostic reference levels (IDRLs), and establish the initial institutional (local) LDRLs. A comprehensive survey was conducted for general fluoroscopy examinations using the medical records of a Radiology Department of a leading ...

The estimation of the mean glandular dose to the breast (MGD) for x-ray based imaging modalities forms an essential part of quality control and is needed for risk estimation and for system design and optimisation. This review considers the development of methods for estimating the MGD for mammography, digital breast tomosynthesis (DBT) and dedicated breast CT (DBCT). Almost all of the methodolo...