期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2015
卷号：81
期号：1
出版社：Journal of Theoretical and Applied
摘要：This paper presents the Monte Carlo simulation of the Positron Emission Tomography (PET) scanning technique using MCNPX code. The raw data generated by general MCNPX code contain a lot of unnecessary information for the image reconstruction process. This requires a large memory to store all this information. In order to reduce the needed memory, we introduce some modifications on the MCNPX code source in order to be able to write directly the important data representing the coincidence events detected by the detector pairs along the lines of response (LORs). These data are acquired as a result of launching two simulations on a uniform cylindrical positron emitter source in water-filled environment. Thereafter, from the object�s geometry, knowledge of the materials in this object and the acquired simulation data, the attenuation correction map has been calculated and applied to the acquired data during PET image reconstruction process.
