Abstract
Increasing requirements for technical parameters of inspection digital radiography systems are caused by increasing incidences of terrorism, drug trafficking and explosives via variety of transport. These requirements have determined research for new technical solutions that enable to ensure the safety of passengers and cargos in real-time. The main efforts in the analyzed method of testing are aimed at the creation of new and modernization of operated now systems of digital radiography as a whole and their main components and elements in particular. The number of these main components and elements includes sources of X-ray recording systems and transformation of radiometric information as well as algorithms and software that implements these algorithms for processing, visualization and results interpretation of inspection. Recent developments of X-ray units and betatrons used for inspection of small- and large-sized objects that are made from different materials are deserve special attention. The most effective X-ray detectors are a line and a radiometric detector matrix based on various scintillators. The most promising methods among the algorithms of material identification of testing objects are dual-energy methods. The article describes various models of digital radiography systems applied in Russia and abroad to inspection of baggage, containers, vehicles and large trucks.
Highlights
The terrorism is one of the principal dangers for the society in XXI century
The main efforts of the radiation inspection experts are directed to create a high-performance sources and detectors of the ionized radiation, and to develop algorithms and software to process the results of detection of radiation
The work [17] researches the high-energy realization of dual energy methods (DEM). This realization is based on the inspected object (IO) prescan by narrow beams of the high-energy X-ray radiation with two maximal energies, on the generation of two digital radiographs, on the further separate estimation of contributions of the Compton scattering and the effect of pair production into X-ray attenuation and into the generation of the identification parameter image
Summary
The terrorism is one of the principal dangers for the society in XXI century. In support that we can mentioned scaled terroristic acts on transport (2001 – September 11 attacks in USA; 2009 – 2010 – Moscow Metro bombing, Nevsky Express bombing; 2011 – Domodedovo International Airport bombing) [1, 2]. The main efforts of the radiation inspection experts are directed to create a high-performance sources and detectors of the ionized radiation, and to develop algorithms and software to process the results of detection of radiation.
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