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Updated: Oct 15, 2025

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
Published on: February 1, 2016
Modelling and Simulation of Compton Scatter Image Formation in Positron Emission Tomography
Ivan G Kazantsev1, Samuel Matej2, Robert M Lewitt2
1Institute of Computational Mathemtics and Mathematical Geophysics, 630090 Novosibirsk, Russia.
Abstract:
We present the comparative study of the analytical forward model and the statistical simulation of the Compton single scatter in the Positron Emission Tomography. The formula of the forward model has been obtained using the Single Scatter Simulation approximation under simplified assumptions and therefore we calculate scatter projections using independent Monte Carlo simulation mimicking the scatter physics. The numerical comparative study has been performed using a digital cylindrical phantom filled in with water and containing spherical sources of emission activity located at the central and several displaced positions. Good fits of the formula-based and statistically generated profiles of scatter projections are observed in the presented numerical results.
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