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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 Pengaruh Dosis Radiasi Eksternal Akumulasi Dosis yang Diterima Petugas Radiasi di Ruang Penyinaran Radioterapi RSUP dr.Hasan Sadikin Bandung Budi Muhammad AR; Eko Hidayanto; Very Richardina
Youngster Physics Journal Vol 7, No 2 (2018): Youngster Physics Journal April 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

In radiation utilization, the regulation should be applied to minimize radiation dose received by the officer in order not to exceed the provision of Dose Limit Value based on BAPETEN Regulation No. 4 of 2013 that the average of equivalent dose is ≤50 mSv/year and ≤20 mSv for five-year period. The purpose of this study was to analyze the external radiation dose received by each officer at Radiotherapy Installation RSUP dr.Hasan Sadikin Bandung based on the NBD that has been determined. The equivalent dose values were obtained from the Thermoluminisence Dosemeter (TLD) of each officer over a five-year period from 2012 to 2016 that had been read by using a TLD reader. Then the radiation exposure measured by using a surveymeter with a distance of 3 meters from each teleterapi aircraft with radioactive sources to predict the distance factor between officers and radiation sources. The results showed that teleterapi operators received the highest equivalent dose in a five-year period with a dose value of 0.206 mSv/year, then in 2013 the external radiation dose received by officers and medical physicists reached the highest value when compared to another officers, with the average value of equivalent dose was 0.085 mSv/year and 0.55 μSv/hour. If observed from the distance factor, in 2013 each officer tends to come near to the source of radiation at every working hour. All radiotherapy officers at RSUP dr.Hasan Sadikin Bandung from 2012 to 2016 received a safe radiation dose and not exceed the NBD determined by BAPETEN. Keywords: Dose Limit Value, External Radiation Dose, Equivalent Dose, Distance
PENGARUH BEBERAPA JENIS ELEKTRODA UNTUK MENENTUKAN PERPINDAHAN CESIUM-134 di DALAM TANAH MENGGUNAKAN METODE ELEKTROKINETIK Agus Joko Prasetyo; Eko Hidayanto; Zaenal Arifin
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

Require to be conducted by impure soil remidiasi to shuting-out of Cesium-134 into human being body with elekrokinetik for the purpose of determining transfer of Cesium-134 and influence of electrode type in soil. This research used by three electrode type that is copper, stainless steel, and graphite. Transfer of Cesium-134 contamination divide by three areas there are zone I (0-7,5 cm from anoda), zone II (7,5-22,5 cm from anode) and zona III (22,5-30 cm from anode). From result of transfer of Cesium-134 comntamination and transfer efficiency got one of the electrode type which the best to be used for the sweeping of Cesium-134 contamination. Result transfer of contamination Cesium-134 using three different electrode type have transfer which much the same to that is zone I  degradation of concentration, zone II unstable concentration and zone III increase of concentration. For the degradation of copper electrode type electrics current 20.80 mA, steel stainless 23.00 mA, and graphite 15,00 mA. While best electrode type this research is graphite with efficiency at zone III equal to 4,48%, 7,43%, and 9,09%. Keywords: Elektrokinetik, Cesium-134, copper, steel stainless, and graphite.
Pengaruh ketebalan dan kombinasi jenis filter terhadap nilai Entrance Skin Exposure (ESE) menggunakan factor eksposi pemeriksaan kepala Salimatul Litasova; Eko Hidayanto; Muchammad Azam
Youngster Physics Journal Vol 7, No 2 (2018): Youngster Physics Journal April 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Research on the analysis of the effect of filter type variation and thickness on mobile X-ray machine against ESE value of head examination. The use of filters aims to eliminate the low-energy X-ray beam so as to minimize the dose. The experiment was conducted to determine the ESE value and the thickness of the beak (HVL) on the combination of type and thickness of the filter. Combination filter used was aluminum (Al) with copper (Cu), aluminum with zinc (Zn), aluminum with galvalum (AlZnSi), aluminum (Al)), copper (Cu) with galvalum (AlZnSi), copper (Cu) with zinc (Zn), stainless steel (SS) with galvalum (AlZnSi) and stainless steel (SS) with zinc (Zn) ). With variation of 70, 81 and 90 kV fixed-time line voltages 20 mAs, 100 cm SSD, and 10 x 10 cm irradiation field measured tube voltage and ESE with combination of type and thickness of the filter. The results showed that ESE value with head examination exposure factor using combination of 1-1,5 mm filter Al with Zn, and combination of 1.5 mm  filter Al with galvalum was at tolerance 0,348 - 0,522 mGy. While the exposure factor with combination of filter, Cu with Zn, Cu with galvalum, Cu with Al, SS with Al, SS with Zn and SS with galvalum with thickness of filter combination 1-2 mm under tolerance limit. So that can be used alternative materials other than filter Al can use combination of  filter SS with AlZnSi. Half-Value Layer (HVL) exposure factor 90 kV with an filter Al with galvalum, we can use a 0.52 mm filter on a 0.71 mm filter Al with Zn. Keywords: x-ray machine, ESE, filter, HVL
Analisis tingkat kontaminasi permukaan daerah kerja dan laju paparan radiasi pada Instalasi Kedokteran Nuklir Ukhti Lailun Nisa; Gani Gunawan; Zaenal Arifin; Eko Hidayanto
Youngster Physics Journal Vol 6, No 1 (2017): Youngster Physics Journal Januari 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The surface contamination of the work area and the rate of radiation exposure at nuclear medicine installation have an effect to the safety workers and the society directly or indirectly. This study aims to analyze the level of surface contamination and the rate of radiation exposure on the nuclear medicine installation and to identify the activity of half time 99mTc and 131I. The used method is measuring the surface contamination of the work area caused by the use of radiopharmaceutical through the distance between the detector window and the 3 cm measured region. Meanwhile, the rate of radiation exposures is used to measure the sides of each room with a distance 1 meter in the area control and to measure the activity of radioisotope that is monitored once every an hour for 6.03 hours to 99mTc and every day for 8 days to 131I of the initial measurement and compares with the result calculation. The measurement result of the level of the surface contamination in various areas of all rooms is 0.000-5.272 Bq/cm2 and it is classified into low to medium level of contamination. The measurement result of the rate of radiation exposure in the control area is 0.022-1.404 µSv/h which is still classified under 10 µSv/h. So, it can be concluded that it is safe for workers and other patients. The use of radioisotope on the nuclear medicine installation in accordance with their needs and always consider to the principles of the radiation protection, therefore the level of contamination and the rate of radiation exposure is low. The result of the measurement and the calculation of the activity of 99mTc are decays into a half after 6.03 hours and the activity of 131I is decays a half after 8 days. Keywords: Radiation Protection, Contamination, The rate of Radiation Exposure Half Time Activity.
Desain dan realisasi alat pengukur kandungan kolesterol dalam darah non-invasive Indras Marhaendrajaya; Eko Hidayanto; Zaenal Arifin; Heri Sutanto
Youngster Physics Journal Vol 6, No 3 (2017): Youngster Physics Journal Juli 2017
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Excess total blood cholesterol can lead to heart vessel disorders, stroke and the most fatal can result in death. While testing the cholesterol levels in the blood at this time still use the invasive technique that the patient's blood is taken by using a syringe. This is one of the obstacles / causes of some patients are reluctant to check blood cholesterol. One of the health technologies to detect blood cholesterol in non-invasive is by utilizing the absorption of near infrared ray (NIR) and laser. The change in the physical properties of the resistance shows the chemical content of different solutions. Preparation of non-invasive blood cholesterol gauge by utilizing oxymeter sensor capable of producing voltage changes in various liquid medium and Atmega 8535 microcontroller as a minimum system in controlling output value in digital data form. The system or equipment to be fabricated in this study is a non-invasive method (without injuring the patient's body while taking blood samples) to determine the blood cholesterol content by utilizing the physical properties of laser absorption or NIR sensors on various blood cholesterol levels. From the research results have been made series of sensor interfaces and serial data communications are displayed digitally. The test results show that the equipment made has shown good performance but still limited its performance test. The results of the research will be developed into a national program of providing cheap, non-invasive portable and movable health test kits. Keywords: Heart Disease, Blood Cholesterol, NIR, Laser, Microcontroller.
ANALISA PENGARUH pH TERHADAP PERUBAHAN NILAI DENSITAS OPTIK (OPTICAL DENSITY) PADA FILM DENGAN VARIASI JENIS DEVELOPER Rahmawati Hidayah; Eko Hidayanto; Zaenal Arifin
Youngster Physics Journal Vol 4, No 1 (2015): Youngster Physics Journal Januari 2015
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The effect of pH on the change in optical density values on the film with the variation of the type of develope was analyzed. Expected results are able to provide good information in an effort to uphold the diagnosis .To determine the relationship between the pH of the change in optical density values on the film using X-rays and objects illuminated Stepwedge, eksposi factor X-ray tube current 5 mAs with X-ray tube voltage of 50 kVp, generating a developer for one minute, the temperature of 240C denagn A variation of the type of liquid developer A, liquid developer B, and the liquid developer C. The resulting film optical density value measured using a densitometer and compared the results of the relationship between pH and the optical density at three types of liquid developer.Obtained results in liquid developer A is the highest value when the pH 11.01 with an optical density value of 2.93 at Step 11 and the lowest value when the pH 10.70 with an optical density value of 0.27 at Step 1. Liquid Developer B is the higher of the current pH 10.70 with an optical density value of 2.88 at Step 11 and the lowest value when the pH value of 10.46 with an optical density of 0.25 at Step 1. Liquid Developer C is highest when the pH value of 10.49 with 2 optical density values, 87 in Step 11 and the lowest value when the pH 10.14 with an optical density value of 0.21 in Step 1. So the higher the pH , the greater the optical density values and vice versa . Keywords : pH,optical density, liquid developer, and X-ray.
ANALISIS ENTRANCE SURFACE EXPOSURE (ESE) DAN KUALITAS RADIOGRAF PHANTOM SEBAGAI PARAMETER KENDALI MUTU PADA PESAWAT MAMOGRAFI Erna Mariani; Eko Hidayanto; Evi Setiawati
Youngster Physics Journal Vol 2, No 3 (2013): Youngster Physics Journal Juli 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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The Entrance Surface Exposure (ESE) and quality of radiograph phantom as part of a Quality Control (QC) were analyzed on mammography machine Hologic M-Series. This research aims to detemine ESE values on mammography machine and determining number of fibers, speck groups and masses on radiograf phantom as part of a Quality Control (QC).The ESE was measured by Multi Purpose Detector (MPD) over the range of kV from 20–27 kV kV for current time 90 mAs, 95 mAs, 100 mAs, and phantom radiograph was tested by CIRS model 015 phantom was exposed at 23 kV for current time 90 mAs, 95 mAs, 100 mAs. The ESE values by direct measurement ranged from 3,22 mGy to 10,86 mGy and The ESE values by calculation of backscatter factor ranged from 3,59 mGy to 11,73 mGy and phantom radiograph testing qualitatively the number of fibers, speck groups, and mass in over the range of tolerances are 4 for fibers, 3 for speck groups, and 3 for the masses. This results shown that the mammography machine is still good condition and proper to be used for clinical examination moreover the result of phantom radiograph can be read properly and can diagnose symptoms of abnormalities in breast tissue properly.Keywords: Entrance Surface Exposure (ESE), phantom radiograph, quality control, mammography machine, Multi Purpose Detector (MPD).
PENGARUH VARIASI AIR GAP TERHADAP DOSIS SERAP PENYINARAN BERKAS ELEKTRON PADA PESAWAT LINAC SIEMENS / PRIMUS M CLASS 5633 Galih Puspa Saraswati; Eko Hidayanto; Evi Setiawati
Youngster Physics Journal Vol 3, No 3 (2014): Youngster Physics Journal Juli 2014
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

The effect of the variation of the air gap absorbed dose in electron beam irradiation has conducted. In the particular case of electron beam irradiation often can not use the SSD 100 cm due to the influence of the use of the applicator so that the patient's body should be granted an extension of the SSD or air gap at the irradiation. In this study the calculation of the effective SSD, absorbed dose, the air gap correction factor and verification of absorbed dose was performed using the inverse square law and the correction of the output electrons. The method utilized an inverse square law load value of each electron beam irradiation to determine the effective SSD, while the determination of absorbed dose and the air gap correction factor correction using electron output. The results of the calculation states that the effective SSD of 82,2 cm – 109 cm wide field size and is proportional to the electron energy. Absorbed dose and the air gap correction factor proportional to the field size and inversely proportional to the variation of the air gap while the value of the absorbed dose itself is varied between 64,80 cGy to 108,0 cGy as well as the value of the correction factor of the air gap is between 0,869 – 1,000. Correction dose verification of absorbed dose value is still below the value specified tolerances AAPM TG40 is equal to 99,10% - 103,0%. Variations of growing air gap causes the smaller absorbed dose.Keywords: air gap, effective SSD, air gap correction factor, dose normalization 
STUDI PEMANFAATAN SIFAT PEMBIASAN CAHAYA PADA PORTABLE BRIX METER UNTUK MENGANALISIS HUBUNGAN KONSENTRASI LARUTAN SUKROSA (C12H22O11) TERHADAP pH Iva Nistiyanti; Eko Hidayanto
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

Sucrose concentration was analyzed using portable brix meter to show the acidity and alkalinity. Materials the brix were sucrose, honey, milk, and vinegar. Sucrose solution was diluted with aquades at concentration of 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, while concentration solution of milk, honey, and vinegar at 5%, 10%, 15% ,20%, 25%, 30%, 35%, 40%, 45%. Solution at each concentration was measured by Portable Brix Meters to determine the concentration of sucrose with work on the principle of light refraction. The acidity or alkalinity of each solution was measured by a pH meter, so we get the graph calculation and the relationship between the concentration of sucrose solution pH to change the acidity or alkalinity of a solution. Increased concentration on pure sugar or sucrose, causing increased levels of alkalinity, while the honey, milk, and vinegar, with increased concentrations cause acidity. Data were analyzed with logarithmic graph approach. The correlation between the concentration of sucrose solution C with a pH in pure sucrose solution  with R2=0.913. The correlation between the concentration of sucrose solution C with a pH in solution of honey, milk, and vinegar.  with R2 = 0.792, dengan R2= 0.956,  with R2= 0.407,  with R2 = 0.974,  with R2= 0.983. The difference of pH value and concentrations are very small. Keywords: sucrose solution, concentration, pH meter, portable Brix meter
Analisis kurva isodosis paparan radiasi pada ruang terapi dengan Linear Accelerator (LINAC) 6MV Ana Aprilia; Eko Hidayanto; Evi Setiawati; Sanggam Ramantisan
Youngster Physics Journal Vol 7, No 1 (2018): Youngster Physics Journal Januari 2018
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

Radiation exposure in the therapy room with linac 6 MV devices has been conducted at Ken Saras hospital. The purpose of this research was to determine the radiation exposure in the therapy room to provide the information for radiation workers regarding the safe location in therapy room using isodose curve presentation and contour mapping of radiation exposure in the therapy room. The results of radiation exposure measurement were then used to calculate the radiation dose received by patients during therapy as patient information. The method used in this research was the direct measurement of radiation exposure in therapy room using survey meter with 130 cm height from the floor at some point with the addition of each 1 meter, field size is 40 cm x 40 cm, absorbed dose is 50 MU and variations of the gantry position, gantry 00, gantry 900 and gantry 2700.  The result of the measurement then used to create a contour using a software and then analysed to point the safe location through a mathematical calculation. The Values of radiation exposure in field size of 40 cm x 40 cm then converted to the value of radiation exposure in field size of 10 cm x 10 cm on a sample study case patient X by multiplying with the value of the inverse square. The converted value is then calculated into the radiation dose received by patients X during therapy. The results showed that the gantry 00 and gantry 2700 position, the safe location in therapy room for radiation worker is at the position (-5.5; -4) with a dose rate of 7.2 μSv / h and 9.6 μSv /h while at gantry 900  position  there is no safe area for radiation workers in the therapy room. The value of exposure radiation that received by the patient X in this research, that undergo once therapy with 4 times exposure at 4 variation gantry position at dose of 50 MU with  10 cm x 10 cm field size is 1196.9502 μSv or 1.197 mSv. Keywords:  radiation exposure, therapy rooms, isodose curve, safe area, patient radiation dose
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