Accurate positioning reduces the X-ray exposure of the subject and produces a valuable X-ray image for diagnosis. This paper describes the development of a positioning training tool that supports those studying to be radiological technologists in learning the positioning technique efficiently. Students perform the positioning on a personal computer using a three-dimensional computer graphics (3...

Impulse noise generated by industrial machines and occurring at a workplace is a cause of substantial hearing loss in workers. The paper presents data on workplace impulse noise, recorded in three plants of the machine industry. The data were collected in drop-forge, punch-press and machinery shops. The results of the measurements are shown as cumulative relative frequency distributions of the ...

This report summarizes the results of a series of infrared (IR) laser-induced ocular damage studies conducted over the past decade. The studies examined retinal, lens, and corneal effects of laser exposures in the near-IR to far-IR transition region (wavelengths from 1.3-1.4 mum with exposure durations ranging from Q-switched to continuous wave). The corneal and retinal damage thresholds are ta...

Detailed investigation on biomechanics of a complex structure such as the human lumbar spine requires the use of advanced computer-based technique for both the geometrical reconstruction and the stress analysis. In the present study, the computer-assisted tomography (CAT) and finite element method (FEM) are merged to perform detailed three dimensional nonlinear analysis of the human ligamentous...

Objective: Since COVID-19 is a worldwide pandemic, detection using convolutional neural network (CNN) has been an extraordinary research technique. In the reported studies, many models that can predict based on deep learning methods various medical images have created; however, clinical decision support systems limited. The aim of this study to develop successful model X-ray and computer-assist...

We are developing a computer-aided diagnosis (CAD) system for lung nodule detection on thoracic helical computed tomography (CT) images. In the first stage of this CAD system, lung regions are identified by a k-means clustering technique. Each lung slice is classified as belonging to the upper, middle, or the lower part of the lung volume. Within each lung region, structures are segmented again...

In the framework of computer-assisted diagnosis, pulmonary airway investigation based on multi detector computed tomography (MDCT) requires to provide radiologists and clinicians with advanced tools for interactive exploration, quantitative assessment and follow-up. This paper develops a set of automated investigation facilities relying on 3D airway reconstruction, enhanced central axis-based d...

This is the second part of a two-part paper on the application of computer-aided diagnosis to diffuse optical tomography (DOT) for diagnosing rheumatoid arthritis (RA). A comprehensive analysis of techniques for the classification of DOT images of proximal interphalangeal joints of subjects with and without RA is presented. A method for extracting heuristic features from DOT images was presente...

The Joint FAO/WHO Expert Committee recommends the maximum permissible level of zilpaterol in meat to be fixed at 0.5 µg/kg. This is substantiated by results analysis described several research works. Nevertheless, substantiation provided for this recommended standard requires a detailed discussion. In study, we aimed analyze suggestions on (MPL) as per health risks consumers. Our revealed that ...

Computer assisted tomography (CAT) in the transverse axial plane, a fundamentally new method of x-ray diagnosis, was developed from I967 to 1972 by G. N. Hounsfield (I973) at the Central Research Laboratories of E.M.I. Ltd. Clinical evaluation of this technique by J. Ambrose (I973) at Atkinson Morley's Hospital has indicated the enormous value of the investigation in patients with intracranial ...