Studi awal pengaruh variasi energi Foton dan material Phantom Rectangular Parallelepiped (RPP) terhadap Fluence Foton menggunakan simulasi Monte Carlo Fluka

Rahmawati, Indriani (2018) Studi awal pengaruh variasi energi Foton dan material Phantom Rectangular Parallelepiped (RPP) terhadap Fluence Foton menggunakan simulasi Monte Carlo Fluka. Diploma thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

INDONESIA: Telah dilakukan penelitian menggunakan program FLUKA berdasarkan metode Monte Carlo. Metode. Monte Carlo dalam fisika medis banyak digunakan pada simulasi detektor pada kedokteran nuklir dan perhitungan dosis serap pada radioterapi. FLUKA merupakan software pengembangan dari metode Monte Carlo yang dapat memodelkan geometri menggunakan graphical user interface (GUI) flair. Penelitian ini menggunakan dua pemodelan geometri yaitu collimator dan phantom untuk mengetahui pengaruh variasi energi foton dan material pada phantom. Variasi energi foton yang digunakan 6, 8, 10, 12, 16, 18 MeV sedangkan variasi material phantom PMMA dan tissue. Berdasarkan hasil simulasi fluence yang dihasilkan mengalami tiga interaksi seperti backscatter, efek Compton, dan photopeak. Variasi energi foton dan material phantom menghasilkan fluence terbanyak pada saat mengalami interaksi efek Compton. Semakin besar energi foton semakin besar fluence yang dihasilkan dari interaksi efek Compton dan semakin besar density material maka semakin besar fluence yang dihasilkan akibat interaksi efek Compton. ENGLISH: Research has been carried out using the FLUKA program based on the Monte Carlo method. The Monte Carlo method in medical physics is widely used in detector simulations on nuclear medicine and calculation of absorbency doses on radiotherapy. FLUKA is a development software from the Monte Carlo method that can model geometry using graphical user interface (GUI) flair. This study uses two geometric modeling, namely collimator and phantom to determine the effect of variations in photon and material energy on phantom. The energy variations of photons used are 6, 8, 10, 12, 16, 18 MeV while the variation of PMMA phantom material and tissue. Based on the results of the fluence simulation, there are three interactions such as backscatter, Compton effect, and photopeak. Photon energy and phantom material variations produce the most fluence when experiencing Compton effect interactions. The greater the photon energy the greater fluence is generated from the interaction of the Compton effect and the greater the material density, the greater the fluence that results from the interaction of the Compton effect.

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