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...

objectives: the aim of this study was to assess the effect of tube current, kilovoltage peak (kvp), metal type, and the position of metal objects on metal artifacts in cone-beam computed tomography (cbct) images. materials and methods: titanium and cobalt-chromium rods were fabricated and placed in a dry human mandible. samples were scanned using a promax 3d cbct unit with different milli-amper...

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: Metal-supported porcelain crowns (MSPC) and bridge restorations may be present in the mouths of patients undergoing CBCT imaging. Artifacts that are caused by these MSPCs may adversely affect image quality. The aim of this study is to determine the effect of different FOV (field of view) and localization in FOV on metal artifacts caused by MSPC. Methods:</...

Introduction: Cone beam computed tomography (CBCT) was introduced and became more common based on its low cost, fast image procedure rate and low radiation dose compared to CT. This imaging modality improved diagnostic and treatment-planning procedures by providing three-dimensional information with greatly reduced level of radiation dose compared to 2D dental imaging modalitie...

Introduction: The image quality of computed tomography (CT) can be seriously lowered by metal implants of patients. These implants are known to exert a significant impact on diagnostic accuracy due to artifacts. The current study aimed to assess the usefulness of Metal Artifact Reduction (MAR) software in the reduction of metal artifacts, in comparison to iterative rec...

BACKGROUND AND PURPOSE Flat panel detector CT images are degraded by streak artifacts caused by radiodense implanted materials such as coils or clips. A new metal artifacts reduction prototype algorithm has been used to minimize these artifacts. The application of this new metal artifacts reduction algorithm was evaluated for flat panel detector CT imaging performed in a routine clinical settin...

tappeh bazgir is located 76km northeast of torang tappeh at the eastern fringes of the gorgan plain. the metal hoard was discovered in 2001 and excavated in 2010. the hoard is composed of a diverse assemblage and date back to the late bronze age / hissar iiic). we investigated six artifacts for studies using different methods such as metallographic studies, sem-eds, xrd, and some chemical analy...

OBJECTIVES The aim of this study was to assess the effect of tube current, kilovoltage peak (kVp), metal type, and the position of metal objects on metal artifacts in cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS Titanium and cobalt-chromium rods were fabricated and placed in a dry human mandible. Samples were scanned using a Promax 3D CBCT unit with different milli-amper...