Radiography Simulation Based on Exposure Buildup Factors for Multilayer Structures

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概要

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• Monte Carlo techniques were usually used to study the effect of scattered photons on a radiographic X-ray image. Such approach is accurate, but computer time consuming. On the other hand, the exposure buildup factors can be used as approximate and efficient assessment to account for the scattering of X-rays. This method uses the known radiography parameters to find the resulting detector exposure due to both scattered and un-collided photons. A model for radiography simulation, based on X-ray dose buildup factor, is proposed. This model includes non-uniform attenuation in voxelized object of imaging (patient body tissue). Composition of patient body is considered as a multi-layer structure. Various empirical formulas exist for multi-layer structure calculations and they all calculate multi-layer buildup factors by combining single-layer buildup factors. The proposed model is convenient in cases when more exact techniques (like Monte Carlo) are not economical.

• 2009-06-25

著者

• Pesic Milan

  Vinča Institute of Nuclear Science, Center NTI-150, P.O. Box 522, 11001 Belgrade, Republic of Serbia

• Marinkovic Predrag

  Faculty of Electrical Engineering, University of Belgrade, Bulevar Kralja Aleksandra 73, P.O. Box 35-54, 11120 Belgrade, Republic of Serbia

• Pesic Milan

  Vinča Institute of Nuclear Science, Center NTI-150, P.O. Box 522, 11001 Belgrade, Republic of Serbia

• MARINKOVIC Predrag

  Faculty of Electrical Engineering, University of Belgrade

関連論文

• Radiography Simulation Based on Exposure Buildup Factors for Multilayer Structures

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