In this report, we summarize the survey of diagnostic X-ray equipment conducted in 2005, focusing on exposure conditions. What we would like to point out in this report is how prevalent digital image receptor systems have become, including flat panel detectors (FPD), which did not exist in our last survey five years ago. FPD have become popular very quickly among the digital receptor systems us...

The goal of this research was to investigate the type and frequency of mandibular and maxillary lesions that could not be diagnosed relying solely on external macroscopic observation. The sample comprised of 189 maxillae and 182 mandibles from a late-medieval graveyard. The material was examined both macroscopically and radiologically, using traditional X-ray facilities, orthopantomographs, and...

AIM To compare in an ex vivo model the ability of digital intraoral radiography and cone beam computed tomography (CBCT) to detect simulated external inflammatory root resorption lesions, and to investigate the effect of altering the degree of rotation of the CBCT scanners X-ray source and imaging detector on the ability to detect the same lesions. METHODOLOGY Small and large simulated extern...

We report initial results of a feasibility study of Proton Computed Tomography and Proton Transmission Radiography for applications in proton therapy treatment planning and patient positioning. The aim of the study is to explore experimentally if PCT, which is based on the measurement of the specific energy loss of protons traversing tissues of different density, may be preferred to X-ray Compu...

Dental Radiographs have a valuable aid in the diagnosis of periodontal diseases and the evaluation of treatment effects. Computer-based image acquisition and processing techniques will now further increase the importance of radiography in periodontal diagnosis. Digital Subtraction Radiography (DSR) requires a pair of images with identical gray-level distribution and projection geometry is neede...

Diffraction Enhanced x-ray Imaging (DEI) derives contrast from absorption (as does conventional radiography), gradient in x-ray index of refraction and scatter-rejection (extinction). The combination of these contrast mechanisms generally allows more features in objects to be observed compared to conventional radiography [1]. In some instances or in specially prepared systems it is possible to ...

X-ray radiography is the most readily available imaging modality and has a broad range of applications that spans from diagnosis to intra-operative guidance in cardiac, orthopedics, and trauma procedures. Proper interpretation of the hidden and obscured anatomy in X-ray images remains a challenge and often requires high radiation dose and imaging from several perspectives. In this work, we aim ...

In order to detect the presence of defects in the composite structure of helicopter rotor blades, combined neutronand X-ray radiography investigations were performed at the Budapest Research Reactor. The rotor blades were about 10 m (or 6,5 m) long, and therefore the images were taken in several segments, and a special program was developed to reconstruct the entire radiographic image from the ...

BACKGROUND Demographic changes are leading to an ageing population in Europe, and predict an increase in the number of nursing home residents over the next 30 years. Nursing home residents need specialised healthcare services such as radiology due to both chronic and acute illnesses. Mobile radiography, x-ray examinations performed in the nursing homes, may be a good way of providing services t...