Background:  This study presents patient specific and organ dose estimation in computed tomography (CT) imaging of thorax directly from patient CT image using Monte Carlo simulation.  Patient's CT image is considered as the patient specific phantom and the best representative of patient physical index in order to calculate specific organ dose. Materials and Methods: EGSnrc /BEAMnr...

Scarce platinum group elements (PGE) are mainly concealed in massive sulfides, and finding economically viable ore bodies largely relies on their fast chemical mapping. Most core scanners provide incomplete mineralogical contents, but none also a complete analysis including light elements. This study investigates the performance of fully automated laser-induced breakdown spectroscopy (LIBS) sca...

OBJECTIVE To evaluate metal artefact reduction (MAR) techniques from four CT vendors in hip prosthesis imaging. METHODS Bilateral hip prosthesis phantom images, obtained by using MAR algorithms for single-energy CT data or dual-energy CT (DECT) data and by monoenergetic reconstructions of DECT data, were visually graded by five radiologists using 10 image quality criteria. Comparisons between...

Terrestrial laser scanners and digital cameras can be considered largely complementary in their properties. Several instruments combine a laser scanner and a camera, with the laserscanner providing geometry information and the camera supplying point of surface colour. These approaches of data fusion make sub-optimal use of the complementary properties of the two devices, as they assign a master...

This paper presents a novel technique of fingerprinting analysis using direct imaging instead of traditional fingerprint scanners. Effect of illumination wavelength on the quality of fingerprint images is studied and optimal wavelength for direct imaging is proposed. The results presented can be extended to direct imaging of faces. Keywords—fingerprint; hyperspectral images; fingerprint scanner...

The present study introduces two quantitative parameters to compare the accuracy of ultrasonic C-scan testing and X-ray radiography methods in the damaged area detection under low-velocity impact in polymer-based composites. For this purpose, the hand lay-up technique of composite processing was employed to prepare the composite specimen. A composite specimen consisting of the glass fiber reinf...