Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Indonesian Journal of Physics (IJP) Wahana Fisika : Jurnal Fisika dan Terapannya
Ridwan Ramdani
Jurusan Fisika Fakultas Sains Dan Teknologi UIN Sunan Gunung Djati Bandung
Astronomy Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Physics

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Design and Analysis Effect of Gantry Angle Photon Beam 4 MV on Dose Distributions using Monte Carlo Method EGSnrc Code System Uum Yuliani; Ridwan Ramdani; Freddy Haryanto; Yudha Satya Perkasa; Mada Sanjaya
Indonesian Journal of Physics Vol 27 No 1 (2016): Vol 27 No 1 (2016), July 2016
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (231.79 KB) | DOI: 10.5614/itb.ijp.2016.27.1.3

Abstract

Varian linac modeling has been carried out to obtain Percentage Depth Dose (PDD) and profiles using variations gantry angle 0o, 15o, 30o , 45o in the vertical axis of the surface, field size 10x10 cm2, photon beam 4 MV and Monte Carlo simulations. Percentage Depth Dose and profile illustrates dose distributions in a phantom water measuring 40x40x40 cm3, changes gantry is one of the factors that determine the distribution of the dose to the patient research shows changes in Dmax in the Percentage Depth Dose is affected by changes in the angle gantry resulted in the addition of the area build up so it can be used for therapy in the region and produce skin sparing effects that can be used to protect the skin from exposure to radiation. The graph result is profiles obtained show lack simetrisan in areas positive quadrant has a distribution of fewer doses than the quadrant of negative as well as the slope of the surface so that it can be used for some cases treatments that require a depth and a certain slope, dose calculations are more accurate and can minimize side effects.
Analysis of Effect of Change Source to Surface Distance (SSD) and the Field Size to Distribution Dose Using Monte Carlo Method-EGSnrc Intan Dillia Nurhadi; Ridwan Ramdani; Freddy Haryanto; Yudha Satya Perkasa; Mada Sanjaya
Indonesian Journal of Physics Vol 30 No 1 (2019): Vol 30 No 1 (2019)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (693.89 KB) | DOI: 10.5614/itb.ijp.2019.30.1.3

Abstract

Research was conducted to analyze the effect of changes in the distance radiation source to the surface it is called the medium Source to Surface Distance (SSD) and wide exposure field (Field Size) on the distribution of the dose in linear air Accelerator (LINAC) using Monte Carlo - EGSnrc. Monte Carlo simulation is used for modeling and simulation head linac at BEAMnrc. Virtual model of the linac is made based on the data characteristics of the aircraft Linac Varian Clinac iX then its output obtained information characteristic photon beam using BEAMDP, while modeling and simulation phantom done on DOSXYZnrc with the size of the phantom is (40x40x40) cm3 , with the material in the form of water, using a beam of photons 6 MV, testing variation SSD at 80 cm, 90 cm, 100.1 cm, 110 cm, 120 cm and variation field size is (6x6) cm2, (10x10) cm2, (20x20) cm2 to obtain disribution of dosage form of curves Percentage Depth dose (PDD) and Profile dose. The results showed that the smaller distance radiation source to the surface of the medium (SSD) and the greater the broad field (field size), then increasing the dose distribution is obtained. In the SSD and Field Size variation, the radiation dose will continue to rise significantly from the surface of the medium 0 cm to a depth of maximum dose (Dmax), then the dose began to decline after passing the depth Dmax.
Perbandingan Dosis Serap Berkas Foton 16 MV Pada Berbagai Jenis Phantom menggunakan Metode Monte Carlo - EGSnrc Ridwan Ramdani; Freddy Haryanto
Wahana Fisika Vol 1, No 2 (2016): Desember
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/wafi.v1i2.4538

Abstract

Telah dilakukan penelitian tentang perbandingan dosis serap berkas foton 16 MV pada berbagai jenis material phantom dengan menggunakan simulasi Monte Carlo-EGSnrc. Tujuan dari penelitian ini adalah membandingkan dosis serap pada berbagai jenis medium phantom yaitu jaringan lunak, paru-paru, tulang dan pmma serta pada medium non homogen. Penelitian ini dilakukan dengan menggunakan simulasi Monte Carlo BEAMnrc dan DOSXYZnrc yang merupakan pengembangan dari EGSnrc. BEAMnrc digunakan untuk memodelkan dan mensimulasikan kepala linac dengan SSD 100 cm dan Field size 10x10 cm2. DOSXYZnrc digunakan untuk memodelkan phantom 40x40x40 cm3 dan mensimulasikan dosis serap pada phantom tersebut. Berdasarkan penelitian yang telah dilakukan didapatkan hasil bahwa kedalaman pada dosis maksimum masing-masing adalah 2.7 cm untuk jaringan lunak, 9 cm untuk paru-paru,  1.5 cm untuk tulang dan 2,5 cm untuk pmma. Untuk medium non homogen dibuat dengan menyisipkan masing-masing paru-paru dan tulang setebal 10 cm di phantom air pada kedalaman 15 cm. Penyisipan tersebut menyebabkan perubahan dosis serap untuk seluruh daerah phantom. Penambahan paru-paru setebal 10 cm menghasilkan rentang faktor koreksi 0,97 – 1,19, sedangkan penambahan tulang setebal 10 cm menghasilkan rentang faktor koreksi 0,82-1,03.
Simulasi Produksi Neutron pada LINAC Radioterapi menggunakan metode Monte Carlo FLUKA-FLAIR Ramdani, Ridwan; Sutrisna, Irma Wati; Syaja'ah, Khoerun Nisa; Aliah, Hasniah
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 9, No 1 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/gravity.v9i1.18979

Abstract

The use of high-energy photon beams in radiotherapy aims to increase the effectiveness of the radiation beam so that it can reach tumors that are deeper than the surface of the skin. However, linac aircraft operated above 8 MV can cause photonuclear interactions. Neutrons, which are highly avoided in medical physics, can be generated from the interaction of high-energy photons with materials with high atomic numbers (Z) in linac heads. The study focused on simulating the production of linac 10 MV aircraft contaminant neutrons using Fluka-Flair software based on the Monte Carlo method to find out where the contaminant neutrons come from and their dose contribution to the water phantom. The simulated linac aircraft is a linac head consisting of target components, primary collimator, Flattening filter, ion chamber, Secondary Collimator, and Phantom. The simulation results show that neutrons are generated at the target component, primary collimator, Flattening filter, ion chamber, secondary collimator, and water phantom. Tungsten is the target material with the most excellent 55,08% neutron fluence due to its highest atomic number, Primary Collimator 23,45%, Flattening Filter 10,67%, Ion Chamber 7,58%, Secondary Collimator 3,07% and Phantom 0,15 %.
Co-Authors Freddy Haryanto Freddy Haryanto Freddy Haryanto Hasniah Aliah Intan Dillia Nurhadi Mada Sanjaya WS Sutrisna, Irma Wati Syaja'ah, Khoerun Nisa Uum Yuliani Yudha Satya Perkasa Yudha Satya Perkasa