OBJECTIVES This study applied a simple method to evaluate the performance of three digital devices (two scanners and one digital camera) using the reproducibility of pixel values attributed to the same radiographic image. METHODS Using the same capture parameters, a radiographic image was repeatedly digitized in order to determine the variability of pixel values given to the image throughout ...

We fabricated two-color luminescence ultrathin films (UTFs) composed of the layered double hydroxide host-aggregation-induced emission guests by LBL assembly. The fabricated UTFs were simple, tunable, controllable and highly luminescent. Moreover, reversible thermochromic luminescence further exhibited their potential in practical applications.

BACKGROUND Intrafractional motion results in local over- and under-dosage in particle therapy with a scanned beam. Scanned beam delivery offers the possibility to compensate target motion by tracking with the treatment beam. METHODS Lateral motion components were compensated directly with the beam scanning system by adapting nominal beam positions according to the target motion. Longitudinal ...

Because modern digital detectors can be tuned to be more efficient than screen-film systems, they automatically lower the radiation dose to the patient while maintaining the image quality radiologists crave. Photon-counting, the method used in Sectra's detector, for example, minimizes patient exposure to radiation. In a 2006 analysis, the British National Health Service Breast Screening Program...

X-ray lithography is an emerging technology for future integrated circuit fabrication for linewidth of O.5J.1.mor below. There are two main criterion of applying x-ray lithography in production: x-ray source and mask technology. At this time, x-ray mask fabrication presents the greatest challenge. The two main elements of a x-ray mask are the membrane and absorber. Ideally a good x-ray mask sho...

Bhabha Atomic Research Centre, Mumbai, India designed and developed a telecobalt unit, which was named as Bhabhatron-II. In this paper, the results pertaining to radiation safety of indigenously developed Bhabhatron-II telecobalt unit are reported. The various tests were carried out as per requirements of International Electrotechnical Commission standard and acceptance criteria developed natio...

The present work addresses the interaction between Si and ZrO which may occur during the nitridation stage of silicon and can affect t8e final reaction products. Using the thermoanalytical methods combined with Xray diffractometry it has been shown that the Si, parallel to the nitride formation, disproportionates in the presence of Zr02 forming ZrSi04 and ZrSi2-x according to 2Zr02 + (3-x)Si > ...

zno thin film of 80 nm thickness was deposited by the sol-gel spin coating method on sio2/si substrate and subsequently post-annealed at 500°c with a flow of oxygen for 60 min. crystallographic structure of the sample was characterized by x-ray diffraction (xrd) method while a field emission scanning electron microscope (fesem) was used to investigate the surface physical morphology and chemica...

Nanostructured SnO2 thin films were prepared using Electron Beam-Physical Vapor Deposition (EB-PVD) technique. Then Ag nanoparticles synthesized by laser-pulsed ablation were sprayed on the films. In order to form a homogenous coated of SnO2 on the glass surface, it was thermally treated at 500°C for 1 h. At this stage, the combined layer on the substrate was completely dried for 8 h in the air...

The visible absorption spectra of Kodak X-Omat V film, which had been exposed to various doses of radiation, have been investigated to analyse the dosimetry characteristics of the film with various densitometers. Common densitometers can use fluorescent light (broad band visible), helium-neon (632 nm) or other spectra of specific bandwidth. The visible absorption spectra show a slight peak in a...