Now showing items 21-30 of 1766
Particle detection and classification using commercial off the shelf CMOS image sensors
(Elsevier Science, 2016-04)
In this paper we analyse the response of two different Commercial Off The shelf CMOS image sensors as particle detectors. Sensors were irradiated using X-ray photons, gamma photons, beta particles and alpha particles from ...
An automatic correction method for the heel effect in digitized mammography images
The most significant radiation field nonuniformity is the well-known Heel effect. This nonuniform beam effect has a negative influence on the results of computer-aided diagnosis of mammograms, which is frequently used for ...
Influence of anatomical location on CT numbers in cone beam computed tomography
Objective: To assess the influence of anatomical location on computed tomography (CT) numbers in mid- and full field of view (FOV) cone beam computed tomography (CBCT) scans. Study Design: Polypropylene tubes with varying ...
Modeling of the efficiency of fibrous filters through numerical simulation and X-ray tomography
(Vsp BvZeistHolanda, 2001)
Alternative X-ray filters for an intra-oral digital radiographic system
(British Inst RadiologyLondonInglaterra, 2012)
Application of two segmentation protocols during the processing of virtual images in rapid prototyping: ex vivo study with human dry mandibles
The aim of this study was to evaluate the accuracy of virtual three-dimensional (3D) reconstructions of human dry mandibles, produced from two segmentation protocols (outline only and all-boundary lines).Twenty virtual ...
A microwave study of coronal ejecta
(Univ Chicago PressChicagoEUA, 1999)
Fractal dimension of the mandibular trabecular bone measured on digital and digitized images.
Aims: This study compared fractal dimension (FD) values on mandibular trabecular bone in digital and digitized images at different spatial and contrast resolutions. Materials and Methods: 12 radiographs of dried human ...