A new formulation of total unsharpness in radiography.

Implementation of unsharpness and noise into the model of the imaging system: Applications to chest and lumbar spine screen-film radiography

Shielding evaluation of a typical radiography department: a comparison between NCRP reports No.49 and 147

Background: Designing and shielding of an appropriate radiography room has been one of the major concerns of radiation scientists since the first decade after the invention of X-rays. Recently, report No.147 of National Council on Radiation Protection and Measurements (NCRP) has been published. In this study the researchers have investigated the effect of new report recommendation on primary an...

Unsharpness of generalized measurement and its effects in entropic uncertainty relations

Under the scenario of generalized measurements, it can be questioned how much of quantum uncertainty can be attributed to measuring device, independent of the uncertainty in the measured system. On the course to answer the question, we suggest a new class of entropic uncertainty relation that differentiates quantum uncertainty from device imperfection due to the unsharpness of measurement. In o...

Strategies for Film Replacement in Radiography - a comparative study -

The NDT community discusses about effective film replacement by Computed Radiography (CR) and Digital Detector Arrays (DDA), also known as flat panel detectors, since more than 10 years. Several standards were published by CEN, ASTM and ASME to support the application of phosphor imaging plates in lieu of X-ray film in the year 2005. The European Community funds the project FilmFree, which supp...

Radiation Safety Assessment of the New Neutron Radiography System at Tehran Research Reactor

Recently, a new Neutron Radiography (NR) beam line has been designed, constricted, installed and tested based on the use of E-beam tube of Tehran Research Reactor (TRR). Initial tests have been shown that the system can be used for different samples and purposes such as nuclear plates and rods fuels.  For this end the system need a suitable irradiation room which should be installed at the NR b...