Simulasi teknik penyinaran VMAT (Volumetric Modulated Arc Therapy) pada phantom silinder berdasarkan data DICOM (Digital Imaging and Communication in Medicine) menggunakan metode Monte Carlo EGSnrc

Kurniawati, Dian (2018) Simulasi teknik penyinaran VMAT (Volumetric Modulated Arc Therapy) pada phantom silinder berdasarkan data DICOM (Digital Imaging and Communication in Medicine) menggunakan metode Monte Carlo EGSnrc. Diploma thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

This research aims to studied one of the radiotherapy techniques of VMAT and to know the dose distribution of VMAT on phantom cylinders with MLC pycom and MLC Dicoman using Monte Carlo method – EGSnrc. VMAT is one of the techniques of radiotherapy in which all fractions of the dose are given continuously as the gantry rotates around the patient with manages gantry rotation speed, MLC leaf position and the dose fraction given. The simulation process starts with head linac modeling using BEAMnrc, then simulation Monte carlo VMAT using DOSXYZnrc. Input parameters for BEAMnrc and DOSYZnrc simulations using information from data DICOM rtplan AAA. The results of this study will provide information on the characteristics of photon beam 6 MV such us fluence, energy fluence, the spectral distribution and energy fluence distribution, and dose distribution on phantom cylinders. The Simulation Monte Carlo VMAT is done by using 300 million particles which produced a dose distribution of VMAT in the form of dose profile curves and isodose curves, where the curve showed that in the simulation VMAT using phantom arccheck and phantom python with MLC pycom and MLC Dicoman produced maximum dose distribution on the isocenter region. ABSTRAK Penelitian ini bertujuan untuk mempelajari salah satu teknik radioterapi yaitu VMAT serta mengetahui distribusi dosis VMAT pada phantom silinder dengan MLC pycom dan MLC Dicoman menggunakan metode Monte Carlo EGSnrc. VMAT merupakan salah satu teknik radioterapi dimana seluruh fraksi dosisnya diberikan secara kontinu saat gantry berotasi mengelilingi pasien dengan mengatur kecepatan rotasi gantry, MLC leaf position dan fraksi dosis yang diberikan. Proses simulasi dimulai dengan pemodelan head linac menggunakan software BEAMnrc, kemudian simulasi Monte Carlo VMAT menggunakan software DOSXYZnrc. Parameter untuk simulasi BEAMnrc dan DOSXYZnrc menggunakan informasi dari data DICOM rtplan AAA. Hasil dari penelitian ini memberikan informasi mengenai karakteristik berkas foton 6 MV seperti fluence, energi fluence, distribusi spektral dan distribusi energi fluence, serta distribusi dosis pada phantom silinder. Simulasi Monte Carlo VMAT dilakukan dengan menggunakan 300 juta partikel yang menghasilkan distribusi dosis VMAT dalam bentuk kurva profil dosis dan kurva isodosis, dimana kurva tersebut menunjukkan bahwa pada simulasi VMAT dengan menggunakan phantom arccheck dan phantom python baik menggunakan MLC pycom maupun MLC Dicoman menghasilkan distribusi dosis maksimum pada daerah isocenter.

Item Type: Thesis (Diploma)
Uncontrolled Keywords: VMAT ; Monte Carlo ; EGSnrc ; DICOM ; AAA
Subjects: Physics
Medicine and Health
Medicine and Health > Medical Physics
Divisions: Fakultas Sains dan Teknologi > Program Studi Fisika
Depositing User: Dian Kurniawati
Date Deposited: 16 Oct 2018 07:15
Last Modified: 16 Oct 2018 07:15
URI: http://digilib.uinsgd.ac.id/id/eprint/14413

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