Assessment of Medical X-Ray Radiographic Screen-Films in Different Spatial Frequencies According To Detective Quantum Efficiency Computation
Journal Title: International Journal of Fundamental Physical Sciences - Year 2012, Vol 2, Issue 1
Abstract
In medical imaging, to make better images there are some measures such as detective quantum efficiency (DQE) and noise equivalent quanta (NEQ) used to evaluate the image quality of each imaging system. Detective quantum efficiency (DQE) is one of the important measures in the assessment of image quality and detector performance. DQE of two types of screen-films namely Lanex Regular/T-Mat G/RA and Lanex Regular/T-Mat L/RA were determined using MTF and NPS data, separately. Moreover, gamma was calculated from characteristic curves for each screen film and photon flounce was estimated using published literature. DQE of the screen-films were computed for three optical densities 0.7, 1.0 and 1.4. The results show Lanex Regular/T-Mat G has better DQE than Lanex Regular/T-Mat L -especially at low frequency with higher contrast for diagnostic radiology purposes.
Authors and Affiliations
Mohammad Khanmirzaei, Wan Muhamad Wan Hassan
Keywords
Related Articles
- EP ID EP599311
- DOI 10.14331/ijfps.2012.330026
- Views 104
- Downloads 0
Comparison of lateral rear force between two and four wheel steering in a vehicle with steer by wire system
One kind of steering systems in vehicles is Steering by Wire (SBW). Control and stability of this method are important issues. In fact the SBW system is very suitable for Four Wheel Steering systems. In this paper the SB...
Organic Conductor Films: Fabrication and Characterization
Polypyrrole-poly(vinyl alcohol) (PPy-PVA) conducting polymer composite films were prepared on Indium Tin Oxide (ITO) glass electrode from an aqueous solution containing pyrrole monomer, p-toluenesulfonate electrolyte and...
On how proton radius shrinkage can be connected with Lorentz factor violation
Views Several new experimental findings have shown that atomic nuclei cannot have a similar structure of that adopted in the Standard Nuclear Physics (SNP), because there are insurmountable obstacles...
Brownian Motion and Infrared Wave Force
The Brownian motion, thermodynamics performance and existence or non-existence of atmosphere in the earth and other celestial bodies depends on the effect of heat energy wave force i.e. Infra-red wave force on the oute...
Quality and Sustainability Criteria in Purchase Decisions of Teenagers
The raising sustainability awareness of consumers has brought the discourse about environmental impacts of products into pulic discourse. Industry has had to respond to this demand for sustainable products. Among the dif...