Computed tomography analysis and visual inspection of asphalt core samples

Validation of computed tomography-based attenuation correction of deviation between theoretical and actual values for four computed tomography scanners

Objective: In this study, we aimed to validate the accuracy of computed tomography-based attenuation correction (CTAC) using the bilinear scaling method.Methods: The measured attenuation coefficient (μm) was compared to a theoretical attenuation coefficient (μt ) using four different CT scanners and an RMI 467 phantom. The effective energy of the CT beam X-rays was calculated, using the aluminu...

Volume Data Inspection Tools for Industrial Computed Tomography

Industrial computed tomography (CT) has opened a new paradigm in product inspection fields. In contrary to other 3D inspection devices, industrial CT systems can completely digitize the interior as well as the exterior of nearly any object. Without any destructive testing, an object’s failures can be detected by volume data analysis from industrial CT scan data. In this paper, we present a set ...

Staging of Laryngeal and Hypopharyngeal Cancer: Computed Tomography versus Histopathology

Introduction: Computed tomography (CT) imaging is the choice of investigation for evaluation of extent of tumor under the mucosa, locally and regionally. This study was undertaken to assess the accuracy of preoperative CT imaging in the staging of carcinoma of the larynx and hypopharynx.   Materials and Methods: In this retrospective study, all cases who were clinically (c) staged T3–T4 and w...

Nasal Septum and External Nasal Deformity Similarities in Monozygotic Twins and Paranasal Computed Tomography Analysis

Since identical twins occur as a result of the division of one egg, they have the same genetic structure. Therefore, their phenotypes and sex are also always the same. However, due to the effect of environmental factors, some of the characteristics of twins living in different regions appear to develop differently. In our case of 17-year-old maternal twins, we emphasized that nasal pathologies ...

Quantitative Characterization of Asphalt Concretes Using High-Resolution X-ray Computed Tomography (CT)