Fixed Forced Detection approach in the acceleration of tomographic simulations using the GATE code

Authors

Keywords:

Monte Carlo Simulation, Fixed Forced Detection, GATE, Tomography

Abstract

Our group is conducting several works to develop and optimize a computational simulation methodology that allows studying new configurations of CT scanners and testing new reconstruction codes under development. A limitation found with the traditional Monte Carlo (MC) simulation was the need for long execution times to reduce the noise in the reconstructed tomographic images. In this sense, finding a different simulation method, with variance reduction, was necessary to allow the reconstruction of quality tomographic images in reasonable times. This work explored the Fixed Forced Detection (FFD) mode as an alternative. The results were very satisfactory. Photon counts with FFD were in the same order as with MC, while calculation times were four times shorter. The tomographic images, reconstructed using 360 projections simulated with FFD and MC, were identical and in agreement with the phantom; however, the one constructed with FFD showed better sharpness and lower noise levels.

Downloads

Download data is not yet available.

References

Sarrut, D; Bardiès, M; Boussion, N.; et al. A review of the use and potential of the GATE Monte Carlo simulation code for radiation therapy and dosimetry applications. Med. Phys. 2014, 41,6, 064301. https://doi.org/10.1118/1.4871617

Cajgfinger, T.; Rit, S.; Létang, J. M.; Halty, A.; Sarrut, D. Fixed forced detection for fast SPECT Monte-Carlo simulation. Phys. Med. Biol. 2018, 63, 055011. https://dx.doi.org/10.1088/1361-6560/aa9e32

Cassola, V. F.; Melo Lima, V. J; Kramer, R.; Khoury, H. J. FASH and MASH: female and male adult human phantoms based on polygon mesh surfaces: I. Development of the anatomy. Phys. Med. Biol. 2010, 55, 133-162. https://dx.doi.org/10.1088/0031-9155/55/1/009

NRecon. https://www.microphotonics.com/micro-ct-systems/nrecon-reconstruction-software/, último acesso agosto 2023.

VV, a 4D slicer. https://github.com/open-vv/vv , último acesso, agosto 2023.

Golosio, B.; Schoonjans, T.; Brunetti, A.; Oliva, P.; and Masala, G. L. (2014) Monte Carlo simulation of X-ray imaging and spectroscopy experiments using quadric geometry and variance reduction techniques. Computer Physics Communications 2014 ,185, 3, 1044-1052. https://doi.org/10.1016/j.cpc.2013.10.034

Published

2024-01-31

How to Cite

Mas Milian, F., Sanchez Dominguez, J., Lopes Bezerra, A. A., Borges de Jesus, C., & Ferreira Guimarães, J. P. (2024). Fixed Forced Detection approach in the acceleration of tomographic simulations using the GATE code. Revista Interdisciplinar De Pesquisa Em Engenharia, 9(2), 1–8. Retrieved from https://periodicos.unb.br/index.php/ripe/article/view/52242