X-Ray Imaging Applications

In X-ray transiUuinination recordings, only liiie-of-sight information is obtained. In order to obtain three-dimensional data it is possible to make the transilluminations in many different directions (projections) and then to use the mathematics of tomographic reconstruction [5.35, 5.36]. 

A large amount of data on the structure of complex organic molecules has been obtained in X-ray diffraction studies on crystalhne samples [5.45]. Recently, X-ray pulses have been used for tirne-resolved diffraction studies, allowing dynamic processes to be investigated [5.46]. 

The principle of XPS is very simple, as illustrated hi Fig. 5.15. Using a characteristic X-ray line from an X-ray tube an electron is ejected from an iimer shell in a sample atom, and its kinetic energy is then the difference between the photon energy hv and the binding energy of the electron  

By analysing the emitted electrons it is possible to determine the binding energies of electrons in different shells. This has been done for most 

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Tao S, Gu ZH, Nathan A (2002) Fabrication of Gd202S Tb based phosphor films coupled with photodetectors for X-ray imaging applications. J Vac Sci Technol A Vac Surf Films 20 1091-1094... 

Galperin A. et al. Radiopaque iodinated polymeric nanoparticles for X-ray imaging applications. Biomaterials. 2007, 28, 4461-4468. 

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