Radiography simulation based on point-kernel model and dose buildup factors
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Three-dimensional point-kernel multiple scatter model for radiography simulation, based on dose X-ray buildup factors, is proposed and validated to Monte Carlo simulation. This model embraces nonuniform attenuation in object of imaging (patient body tissue). Photon multiple scattering is treated as in the point-kernel integration gamma ray shielding problems via scatter voxels. First order Compton scattering is described by means of Klein-Nishina formula. Photon multiple scattering is accounted by using dose buildup factors. The proposed model is convenient in those situations where more exact techniques, like Monte Carlo, are not time consuming acceptable.
Кључне речи:X-ray / radiography / dose buildup factor / scatter voxels
Извор:Journal of X-Ray Science and Technology, 2009, 17, 1, 41-59
- Ministry of Science and Technological Development, Faculty of Electrical Engineering, Belgrade, Serbia [451-03-516/2006-01/141041G], Vinca Institute of Nuclear Sciences, Center [NTI-150]