Evaluation of the scattered radiation components produced in a gamma camera using Monte Carlo method

AUTOR(ES)

Polo, Ivón Oramas

FONTE

Rev. Bras. Eng. Bioméd.

DATA DE PUBLICAÇÃO

2014-06

RESUMO

INTRODUCTION: This paper presents a simulation for evaluation of the scattered radiation components produced in a gamma camera PARK using Monte Carlo code SIMIND. It simulates a whole body study with MDP (Methylene Diphosphonate) radiopharmaceutical based on Zubal anthropomorphic phantom, with some spinal lesions. METHODS: The simulation was done by comparing 3 configurations for the detected photons. The corresponding energy spectra were obtained using Low Energy High Resolution collimator. The parameters related with the interactions and the fraction of events in the energy window, the simulated events of the spectrum and scatter events were calculated. RESULTS: The simulation confirmed that the images without influence of scattering events have a higher number of valid recorded events and it improved the statistical quality of them. A comparison among different collimators was made. The parameters and detector energy spectrum were calculated for each simulation configuration with these collimators using 99mTc. CONCLUSION: The simulation corroborated that LEHS collimator has higher sensitivity and HEHR collimator has lower sensitivity when they are used with low energy photons.

Documentos Relacionados

• Pharmacodynamic Evaluation of Extending the Administration Time of Meropenem using a Monte Carlo Simulation
• Método de Monte Carlo utilizando cálculos de energia total AB initio
• Monte Carlo simulation of a position sensitive gamma ray detector
• Radioisotope scanning using a gamma camera.
• Neutron tomography using projection data obtained by Monte Carlo simulation for nondestructive evaluation