Fariba Zarei
Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran Department of Radiology, Shiraz University of Medical Sciences, Shiraz, Iran
[ 1 ] - Comprehensive TLD dosimetry of physicians and patients during interventional angiography procedures to estimate the risk of radiation deterministic effect
Introduction: Interventional angiography procedures are increasingly used today. These techniques require a long time of standing near the patient and x-ray tube which lead to increase the radiation-dose of the staff and interventionists. This may also, in turn, lead to the occurrence of radiation deterministic effects. Since a large number of interventional radiology were perf...
[ 2 ] - Histogram analysis- a useful tool for tissue characterization in brain CT
Introduction: Pixel value in computed tomography (CT) gives the average linear attenuation coefficient of the scanned material in the path of the x-ray beam, being normalized to that of water. It is known that attenuation coefficient or HU value is a function of the chemical characteristic of the material and of the x-ray energy. The CT image shows the HU value by a shade of gr...
[ 3 ] - An iterative method to estimate x-ray attenuation coefficients in computed tomography
Introduction: The basis of image formation in Computed Tomography (CT) lies in the x-ray linear attenuation coefficient of the scanned material. Compton scattering and photoelectric effect are the dominant interactions of the x-ray photons with the subject, in the range of diagnostic radiology. These two coefficients are important in tissue characterization by Dual-Energy CT (D...
[ 4 ] - Assessment of Adherence of Diagnostic Accuracy Studies Published in Radiology Journals to STARD Statement Indexed in Web of Science, PubMed & Scopus in 2015
Rationale and Objective: The objective of this study is to evaluate the methodological adherence of diagnostic accuracy studies published in radiology journals, which were indexed in different databases with the STARD standard guide 2015.Materials and Methods: The different databases were searched in order to find suitable journals. Among 84 English radiology journals, 31 journal were selected ...
[ 5 ] - Reversal Trend of Hounsfield Unit Values of Substances with High and Low Effective Atomic Numbers
Introduction: In dual-energy computed tomography (DECT), the Hounsfield values of a substance measured at two different energies are the basic data for finding the chemical properties of a substance. The trends of Hounsfield unit (HU) alterations following the changes in energy are different between the materials with high and low Zeff. The present study aim...
[ 6 ] - Assessment the Adherence of Radiologists to the Thyroid Imaging Reporting and Data System (TIRADS)
Introduction: Thyroid nodules are the most common findings among adults. Usually, Fine Needle Aspiration Biopsy (FNAB) can be used to distinguish the malignant and benign lesions. Application of a non-invasive method for determining the chance of malignancy in a nodule is desirable. Thyroid Imaging Reporting and Data System (TIRADS) was introduced to decrease the unnecessary FNABs and to optimi...