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All Journal International Journal of Advances in Applied Sciences Reaktor BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Edumatsains Journal of Physics and Its Applications Indonesian Journal of Electrical Engineering and Computer Science
Eko Hidayanto
Departemen Fisika, Fakultas Sains Dan Matematika Universitas Diponegoro Jl. Prof. Soedarto, SH, Tembalang, Semarang Telp./Fax. (024)74680822/(024) 74680822
Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics

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ANALISIS PROFIL BERKAS RADIASI LINEAR ACCELERATOR 6MV PADA PENGGUNAAN VIRTUAL WEDGE DENGAN GAFCHROMIC FILM Arisa Dwi Sakti; Eko Hidayanto; Heri Sutanto; Sanggam Ramantisan
Youngster Physics Journal Vol 4, No 3 (2015): Youngster Physics Journal Juli 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Analysis of the radiation beam profile linear accelerator 6mV on the use of virtual wedge with gafchromic film done as a virtual wedge calibration on the linear accelerator . Virtual wedge calibration was originally done using ionization chamber detector, but its use is not efficient because for one-time calibration with an area of 10 x 10 cm2 field takes 10 times the exposure with the results of 10 data transform one dose profile curve . It takes a dosimeter that can capture the entire virtual dose results wedge with one exposure is gafchromic films with an area that can be customized . This research was conducted with a virtual wedge on the Siemens PRIMUS linear accelerator , scanner Epson Stylus 10000 XL , Solid Water Phantom , Matlab Program and Excel Program. This research begin to find the corelation between radiation beam and pixel value on gafchromic film with field size 1x 1 cm2. This corelation in used to find profile dose of virtual wedge from gafchromic film with field size 1 x 11 cm2. Variation fof gafchromic film is in this angle on 150, 300, and 450, opening jaws in Y1and Y2and teh last variation of half beam position in (-10 until 0),(-5 until 5) and (0 until 10). This research find that in higher beam dose, make the darkness film but lowerpixel value.ther are 2 corection in jaws position Y2 half beam (-10 until 0)300 and jaws position Y2 half beam (0 until1 0) 450. No one of ymetrisity value higher than 3% appropriate with AAPM TG-47.Keyword: virtual wedge, profil dosis, gafchromicf film, half beam
PENENTUAN AKTIVITAS 60CO DAN 137CS PADA SAMPEL UNKNOWN DENGAN MENGGUNAKAN DETEKTOR HPGe Miftahul Aziz; Eko Hidayanto; Diah Dwiana Lestari
Youngster Physics Journal Vol 4, No 2 (2015): Youngster Physics Journal April 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The measurement of radioactivity 60Co and 137Cs in the unknown sample were conducted to determine activity value using HPGe detector. Calibration of energy, calibration efficiency, making the efficiency of the curve calibration, and validation methods are the determination of sample source activity. Calibration of energy and efficiency using standard sources QCRB 1186 and 152Eu. Enumeration carried out using two detectors with efficiencies of 25% and 35%, respectively at a distance of 17 cm and 24 cm. Efficiency curve created using the excel program. Determination of activity is carried out by chopping Co and Cs in the unknown sample at the same position as the standard source for 3600 seconds. Method validation is done by calculating the activity of standard source QCRB 1186 and 152Eu. Method validation using standard source 152Eu at a distance of 17 cm provide a bias of 1,4% - 3,6% and at a distance of 24 cm provide a bias of 0,3% - 4,6%. Determination of activity the unknown sample against reference value at a distance of 17 cm (Co 1173 keV: 16125 Bq and 16716 Bq; Co 1332 keV: 16526 Bq and 16287 Bq; Cs 662 keV: 16526 Bq and 16287 Bq) and at distance of 24 cm (Co 1173 keV: 15289 Bq and 16533 Bq; Co 1332 keV: 15477 Bq and 16481 Bq; Cs 662 keV: 37226 Bq and 38540 Bq). Keywords: Activity, 60Co, 137Cs, Calibration efficiency, Method Validation
PENGUKURAN TINGKAT RADIOAKTIVITAS 210Pb DAN 40K PADA TEMBAKAU ROKOK SERTA ESTIMASI DOSIS EFEKTIF YANG DITERIMA DARI MEROKOK Achmad Chalid Afif; Eko Hidayanto; Zaenal Arifin; Poppy Intan Tjahaja; Putu Sukmabuana
Youngster Physics Journal Vol 3, No 4 (2014): Youngster Physics Journal Oktober 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The radioactivity in tobacco leaves assessment collected from 14 popular brand in Indonesia. Cigarette was studied in order to find activity concentration of 210Pb and 40K in a cigarette sample, and the effective dose induced to smokers from cigarette tobacco due to the naturally occurring radionuclides, such as 210Pb and 40K. It was concluded that the activity consentration of radioisotope 210Pb varied from 2,22 Bq/kgto 5,56 Bq/kg with average 3,968 ± 1.042 Bq/kg, 210Pb originated from the air and was deposited onto the tobacco leaves and trapped by trichomes, while for 40K from 8,89 Bq/kgto 15,56Bq/kg with average11,75 ± 1,782 Bq/kg.40K in the tobacco leaves was due to root uptake either from soil or fertilizer. The annual effective dose do to inhalation for adults smokers for 210Pb from 16,47 µSv/year to 41,18 µSv/year with average 29,42 ± 7,772 µSv/year. This dose must be compared with the average worldwide exposure to natural radiation source 2,4 mSv/year and especially the part due to inhalation which is 1,26 mSv/year.Keywords: Radioactivity, tobacco leaves, effective dose, smoking
Karakteristik Dosismetri dari Sektor Kolimator Gamma Knife Perfexion Jhon Wesly Manik; Eko Hidayanto; Heri Sutanto
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 2 No 1 (2017): Juli
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v2i1.380

Abstract

This study was conducted to evaluate the dosismetry of sector 1-8 collimator 4 mm, 8 mm, 16 mm for the dose rate of Gamma Knife Perfexion. The measurement method for determining the dosimetry of sectors 1-8 is done by calculating the dose rate using chamber ionization detector by convert to Electromter. For calculating the dose rate of each collimator size 4 mm, 8 mm, 16 mm using rules from American Association of Physicists in Medicine Task Grup 51. The dosimetry of the sectors 1 to8 in the 4 mm, 8 mm, and 16 mm 4, 42.46%, 97.35%, 126.16%Keywords: Gamma Knife Perfexion, Elektrometer, Detector Ionisasi Chamber Dosimetri Gamma Knife, AAPM TG 51
Dose Distribution 6 MV of X-Ray Photon Beam over Cerium Oxide Nanoparticles Solution Iis Nurhasanah; Hella Arofah; Agus Subagio; Eko Hidayanto; Tri Windarti
Journal of Physics and Its Applications Vol 3, No 1 (2020): November 2020
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v3i1.9316

Abstract

CeO2 nanoparticles are biomaterial that demonstrate potential as antioxidant and radioprotector for medical application. In this study, the radioprotector properties of CeO2 nanoparticles was evaluated by measuring absorbed dose of X-ray radiation. CeO2 nanoparticles were synthesized by precipitation and characterized using UV-Vis and FTIR spectrometers. CeO2 nanoparticle solution was prepared with various concentrations from 0.005 mg/mL to 0.06 mg/mL. The solution was exposed to 6 MV X-ray photon beam from medical linear acceleration with a source-to-surface distance of 100 cm and radiation dose of 2 Gy. The absorbed dose of X-ray by CeO2 nanoparticle solution was measured by an ion chamber detector. The absorbance peak at 301 nm observed in UV-Vis spectrum and absorbance peak at 854 and 492 cm-1 in the FTIR spectrum confirmed the formation of CeO2 nanoparticles. Radiation dose measurement exhibited dose reduction of CeO2 nanoparticles solution depend on concentration. CeO2 nanoparticle solution with concentration higher than 0.04 mg/mL showed potential application for radioprotector 6 MV of X-ray photon beam.
Characteristics of Bolus Using Silicone Rubber with Silica Composites for Electron Beam Radiotherapy Santi Yuli Astuti; Heri Sutanto; Eko Hidayanto; Gede Wiratma Jaya; Astri Suppa Supratman; Galih Puspa Saraswati
Journal of Physics and Its Applications Vol 1, No 1 (2018): November 2018
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v1i1.3914

Abstract

Bolus is a material that equal with the tissue and functions to increase the dose radiation in surface area in external radiotherapy, which uses electron beam. In this research, bolus was made using silicone rubber (SR) material, which was mixed with silicacomposites material. The bolus with a dimension of 12 x 12 x 0,5 cm3 was successfully made with a various amount of silica composite (2%, 4%, 6%). Bolus was then characterized using linear accelerator (LINAC) with an electron beam for percentage of surface dose (PSD) and using CT-Scan to measurement relative electron density (RED). The energy of electron beam used in this research was5 and 7 MeV. The result shows that RED value increased with increasing the amount of silica composite with higher RED value amounted to 1.186. PSD value increased with increasing the amount of silica composite, higher PSD value of energy in 5 and 7 MeV amounted 106.82% and 106.82% and 100.34%, respectively. The result certified that the silica composite material can increase the percentage of surface dose on electron beam radiotherapy.
Synthesis of Zn-Fe nanoparticles using pulse laser ablation as a contrast agent in magnetic resonance imaging Nurul Hikmantiyah; Eko Hidayanto; Ali Khumaeni
Journal of Physics and Its Applications Vol 2, No 1 (2019): November 2019
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v2i1.6458

Abstract

Synthesis of zinc oxide nanoparticles, iron oxide nanoparticles and Zn-Fe nanoparticles using pulse laser ablation method has been conducted. Experimentally, a pulse Nd:YAG laser (1064 nm, 7 ns, 35 mJ) was directed and focused on a metal plates of pure Zn and Fe, which are placed in the liquid medium of polyvinyl pyrrolidone (PVP). The PVP functions as a stabilizer agent. The results show that the produced nanoparticles have a spherical shape with an averaged diameter of Zn-Fe nanoparticles of 13 nm. FTIR and XRD test results of Zn-Fe nanoparticles show characteristics of Zn-Fe compounds. The examination of Zn-Fe nanoparticles as MRI contrast agents was carried out by varying the concentration of nanoparticles. Cenh calculation results showed the highest contrast enhancement occurred at a concentration of 1.25 mM with a value of 64.26% for T1 weighted images, and 81.52% for T2 weighted images. The SNR calculation results show the highest value at a concentration of 1.25 mM of 70.52 for T1 weighted images. The highest SNR value in the T2 weighted image at a concentration of 0.156 mM of 165.09.
An evaluation of automated measurement of slice sensitivity profile of computed tomography image: field of view variations Elvira Rizqi Widyanti; Choirul Anam; Eko Hidayanto; Ariij Naufal; Mohammad Haekal
Indonesian Journal of Electrical Engineering and Computer Science Vol 29, No 3: March 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v29.i3.pp1430-1437

Abstract

This study aims to evaluate the automated measurement of slice sensitivity profile (SSP) on the American Association of Physicists in Medicine (AAPM) computed tomography (CT) performance phantom for variations of slice thickness and field of view (FOV). The AAPM CT performance phantom was scanned using a Philips MRC 880 CT Scanner for variations of slice thickness and FOV. The slice thickness values were 1, 3, and 5 mm. The FOV values were 240, 300, 340, 400, and 440 mm. The automated SSPs and their fullwidth at half maximums (FWHMs) were automatically measured from the middle stair object of the phantom. To validate the automated measurement results, the FWHM values of SSPs obtained were compared to those from manual measurements. The differences between FWHMs from automated measurements and set slice thicknesses are less than 0.3 mm, while the differences between FWHMs from automated and manual measurements are less than 0.2 mm. The results from automated measurements are closer to the set slice thickness than those from manual measurements. This automated SSP measurement provides high accuracy and precision for both the slice thickness and the FOV variations.
KOMPARASI ENTRANCE SURFACE AIR KERMA (ESAK) DENGAN SOFTWARE CALDOSE_X DAN METODE TUBE OUTPUT PADA PASIEN THORAX DEWASA DALAM PEMERIKSAAN RADIOGRAFI UMUM BERDASARKAN DATA SI-INTAN Anugrah Rahma Ari Wiganti; Eko Hidayanto; Indras Marhaendrajaya; Pandji Triadyaksa
BERKALA FISIKA Vol 25, No 4 (2022): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Kuantitas  operasional  dosimetri  didasarkan  pada  pengukuran  Entrance  Surface  Air  Kerma (ESAK),  baik  secara  langsung  dengan  thermoluminescence  dosimeter  (TLD)  maupun  tidak langsung dengan memanfaatkan keluaran radiasi pesawat sinar-X.  Namun, CALDose_X dan juga  metode  Tube  Output  mampu  melakukan  perhitungan  dosis  menggunakan  persamaan standar.  Penelitian  ini  bertujuan  untuk  menghitung  ESAK  pada  pemeriksaan  Thorax  radiografi umum  proyeksi  Anterior  Posterior  (AP)  dan  Posterior  Anterior  (PA)  berdasarkan  data  SI- INTAN  dengan  perangkat  lunak  CALDose_X  dan  metode  tube  output  serta  menganalisis perhitungan  ESAK  tersebut  dengan  nilai  Diagnostic  Reference  Level  (DRL).  Data  penelitian bersumber  pada  basis  data  SI-INTAN  Bapeten  yang  berupa  data  survei  pasien  dan  data  keluaran radiasi pada salah satu rumah sakit di Jawa Timur yaitu sebanyak 76 data proyeksi AP dan 111 data proyeksi  PA.  Data  diolah  menggunakan  CALDose_X  dan  metode  tube  output  serta  diuji menggunakan uji normalitas dan uji Wilcoxon. ESAK pada pemeriksaan thorax dewasa radiografi umum rumah sakit X proyeksi AP dengan CALDose_X sebesar 0,34±0,055 mGy dan metode tube  output  sebesar  0,33±0,059  mGy.  Sedangkan  proyeksi  PA  dengan  Caldose-X  yaitu sebesar  0,31±0,13  dan  metode  tube  output  sebesar  0,30±0,13  mGy.  ESAK  pemeriksaan Thorax  di  rumah  sakit  X  pada  CALDose_X  menunjukkan  tidak  ada  perbedaan  yang signifikan dengan metode tube output dan nilainya lebih rendah daripada DRL Indonesia.
Automatic slice thickness measurement on computed tomography images of American College of Radiology phantom Choirul Anam; Dewi A. Insiano; Eko Hidayanto; Ariij Naufal; Annisa Tenri Maya; Tunggul Drajat Mulatomo; Mohd Hanafi Ali
International Journal of Advances in Applied Sciences Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i2.pp371-379

Abstract

This study aims to develop an automatic method for calculating slice thickness on an American College of Radiology (ACR) phantom and evaluate its accuracy at variations of orientation angle and slice thickness. The phantom was scanned using Siemens SOMATOM perspective, with variations of the slice thickness (i.e. 1.5, 3, 5, 6, 7, and 10 mm) and rotation angles (i.e. 0.0, 22.5, 45.0, and 67.5°). The phantom rotation was based on the bone object as a reference. After determining the rotation angle, the phantom image was rotated by the angle. Next, profiles of pixel values across the wire objects for measuring slice thickness were developed from rotated phantom images. The slice thickness was measured automatically from the obtained profiles. The results of the automated method are 2.5, 4.1, 5.4, 5.8, 7.8, and 9.8 mm for all varied slice thicknesses. The differences between the automatic and manual methods are within 0.3 mm. The automatic method is capable of detecting slice thickness for various angles. The differences in slice thickness for various angles are within 0.1 mm for a slice thickness of 3 mm. These results are similar when compared to manual measurements. An algorithm for automated slice thickness measurement on ACR phantom has been successfully developed.
Co-Authors Abdul Rofiq Achmad Chalid Afif Afrio Rika. R Agus Joko Prasetyo Agus Romadhon Agus Subagio Ahmad Pradana Alfia Hanim Ali Khumaeni Ana Aprilia Annisa Tenri Maya Anugrah Rahma Ari Wiganti Ardian Handoko Ari Bawono P Ari Bawono Putranto Ariij Naufal Arisa Dwi Sakti Astri Suppa Supratman Bambang Haris Suhartono, Bambang Haris Budi Muhammad AR Candra Ancila Choirul Anam AM Diponegoro Dewi A. Insiano Diah Dwiana Lestari Duandini, Ega Elin Nuraini Elvira Rizqi Widyanti Erna Mariani Etika, Eva Anggun Evi Setiawati Galih Puspa Saraswati Galih Puspa Saraswati Gani Gunawan Gede Wiratma Jaya H Hadiyanto Hella Arofah Heri Sugito Heri Sutanto Hidayatullah Hidayatullah I. Istadi Idam Arif Iis Nurhasanah Indras Marhaendrajaya Iva Nistiyanti Jhonwesly Manik Josepa ND Simanjuntak Jun Kawai K Sofjan Firdausi Lamtiyah Ikha Indriyana M Rizqi Aditya Rahman Mariatul Khiftiyah Miftahul Aziz Mohammad Haekal Mohd Hanafi Ali Muahamad Irsal Much. Azam Muchammad Azam, Muchammad Muhammad Irwanto Muhammad Nur Muharam Budi Laksono, Muharam Budi Nur Paramita Nira Mulyono Nurul Hikmantiyah Nurulita, Syaphira Faza Pandji Triadyaksa Poppy Intan Tjahaja Poppy Intan Tjahaja Puput Khusnaiatul Putri Parmitasari Putu Sukmabuana Rafli Filano Rahmawati Hidayah Rini Shintawati Salimatul Litasova Sanggam Ramantisan Sanggam Ramantisan Sanggam Ramantisan Santi Yuli Astuti Singgih Wibowo Sri Murni Susila Wardaya, Susila Takashi Yamamoto Teruo Tanabe Tiffany Rahma Novestiana Tina Melinda Tri Windarti Tunggul Drajat Mulatomo Ukhti Lailun Nisa Very Richardina Wahyu Setia Budi Wahyu Tri Cahyanto Yoyon Wahyono Yoyon Wahyono Zaenal Arifin