THE EFFECT OF MAGNETIC FIELD TO POSITRON RANGE TO INCREASE SPATIAL RESOLUTION IN POSITRON EMISSION TOMOGRAPHY (PET) IMAGING

• Main Author: DEWI INDRIASARI (NIM : 10213005), YULISTIANI
• Format: Final Project
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/31820
• Institution: Institut Teknologi Bandung

The spatial resolution of PET imaging is not as good as other imaging techniques such as CT and MRI. One method to increase the spatial resolution of PET is to use magnetic fields. In this study, we will find the optimum magnetic field value to improve the spatial resolution of PET using 10 positron emitter isotopes. To calculate the positron range from each radioisotope, positron emission were simulated in the water phantom using the Geant4 Application for Tomography Emission (GATE). The results of this simulation are frequency to the positron range in the form of Gaussian distributions. From this distribution curve, FWHM analysis was carried out to determine the contribution of each radioisotope in reducing PET spatial resolution. The magnetic fields effect of 0.5 to 11.7 T on the PET system will be simulated. From the results of this simulation, the new FWHM values will be obtained and compared to the previous results.