Shahdad and Yahya which are two important prehistoric sites in the Kerman Province, are of most important forArchaeometallurgical studies. During excavations at these sites a number of metal objects have been discovered.Moreover, evidence of metal working on the surface testify to manifacturing of metal objects. This also shows that thesite might have experienced craft specialization.The follow...

conclusions the type of materials can influence the obtained gsv. different materials cause various amounts of artifacts due to differences in density and atomic number. results according to the mean gsv of the five different materials, the majority of artifacts produced were as follows: tempbond > zoe > mta > gi (chemfil dentsply) > gi (gc, fuji ιx). materials and methods samples of five cemen...

Introduction: Motion of the patient during myocardial perfusion SPECT could potentially results in false perfusion defects. The effect of different reconstruction methods on these artifacts is not studied. Clarification of the relation between the extent, severity and duration of motion with the resultant artifacts may be helpful in designing special soft wares for motion correction. This...

shahdad and yahya which are two important prehistoric sites in the kerman province, are of most important forarchaeometallurgical studies. during excavations at these sites a number of metal objects have been discovered.moreover, evidence of metal working on the surface testify to manifacturing of metal objects. this also shows that thesite might have experienced craft specialization.the follow...

introduction: motion of the patient during myocardial perfusion spect could potentially results in false perfusion defects. the effect of different reconstruction methods on these artifacts is not studied. clarification of the relation between the extent, severity and duration of motion with the resultant artifacts may be helpful in designing special soft wares for motion correction. this study...

Introduction: Metallic artifacts due to pacemaker/ implantable cardioverter defibrillator (ICD) leads in CT images can produce artifactual uptake in cardiac SPECT/CT images. The aim of this study was to determine the influence of the metallic artifacts due to pacemaker and ICD leads on myocardial SPECT/CT imaging. Methods: The study included 9 patients wh...

a method is described whereby the isodose curves of a cobalt unit were measured, using a simple photographic technique. the method reduces the effects of experimental errors and artifacts by cross_plotting the constants of decrement liner. the method is self-calibrating, and affords a useful allernative to the more usual water phantom pro:edures, in cases when this apparatus is not available

Aim: The aim of this in vitro study was to evaluate imaging artifacts induced by Titanium, Zirconium, Titanium-Zirconium abutments in CT, MRI and CBCT imaging modalities.Methods: A 4×8mm titanium fixture was inserted in a dry human mandible. Titanium, Zirconium and Titanium–Zirconium abutments measuring 10.5 mm in height are located on the fixture, one by one. Each abutment was scan...