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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 Jurnal Pengabdian West 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 Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences

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Journal : YOUNGSTER PHYSICS JOURNAL

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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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Abstract

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
ANALISIS DOSIS PAPARAN RADIASI PADA INSTALASI RADIOLOGI DENTAL PANORAMIK Candra Ancila; Eko Hidayanto
Youngster Physics Journal Vol 5, No 4 (2016): Youngster Physics Journal Oktober 2016
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Abstract

A research on the analysis of radiation dose exposure in panoramic dental radiology installations in Government General Hospital dr Kariadi Semarang, this study aims to identify and analyze the radiation dose received by workers and the general public and determine the effectiveness of radiation shielding in dental panoramic installations. Measurements were carrried out at the time of exposure using dental panoramic with surveymeter babyline. Measurements of doses exposure taken at the point operator station, waiting rooms and in the corridors employess and panoramic dental space, while measuring the effectiveness of radiation shielding in the door of the room and the operator station. Dose measurement result obtained in the operator station amounted 5,83 µSv/h, lounge area 2,4 µSv/h and at the corridor employees are not detected exposure dose when exposure using dental panoramic. For the effectiveness of radiation shielding door of the room is 12,24 % and in the operators station is 82,29 %. Can be concluded that the operator room and corridor employess fairly save from exposure to excessive radiation, while the lounge area has a value that approaches the dose limits. For radiation shielding door of the room is small and the effectiveness of the operator room is large.
ANALISA PENGARUH FAKTOR EKSPOSI TERHADAP ENTRANCE SURFACE AIR KERMA (ESAK) Muahamad Irsal; 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

The research has been analyzed of the effect of exposure factors at the entrance surface air kerma (ESAK) of the thorax radiographs. This research uses anthropomorphic phantom, multipurpose detectors, FFD 100 cm, with radiation field 25 cm × 25 cm. irradiation conditions is given by the variation of expose factors using tube voltage 50-100 kV and tube current-time 2-20 mAs. The results of research showed that the effect of the tube voltages to the entrance surface air kerma experience is increase a specific approximated by an polynomial equation with a correlation coefficient value R2 = 1 and the variation of the tube current-time increased linearly approximated by a approach linear equation R2 = 1, uses of tube current time under 4 mAs with resulted lower the entrance surface air kerma based on IAEA Safety Series No. 115 (1996) is 0.4 mGy at examination of thorax radiographic, and conducted a calculation uncertainly  value of every expose factors using variations of tube voltage and tube current-time based on scenarios three of IAEA Technical Report Series No. 457(2007).Keywords: entrance surface air kerma, thorax radiography, the tube voltage, tube current-time, phantom anthoropomorphic.
Analisis keakuratan verifikasi dosis dengan menggunakan perbandingan phantom standar dan phantom replika Ardian Handoko; Hidayatullah Hidayatullah; Eko Hidayanto; Very Richardina
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

In the medical and radiology, phantom used as a simulator for the human body for radiotherapy activities. Most of them use homogeneous or standard phantom that have density same as water. This research was done because in real case, in the human body not only consists of soft tissue, but also there are other tissues such as lung and bone. By measuring using a non-homogeneous phantom or replica phantom with different materials densities, we compared the dose accuracy results from planning by this two phantom types. Replica phantom uses materials such as pine wood instead of lungs, polypropylene as a substitute for fat, acrylic instead of cartilage and solid silicon can change the bone. The study was conducted by varying the standard field area i.e., 3x3 cm, 5x5 cm, 10x10 cm, 15x15 cm, 20x20 cm and the mix area field. Obtained accurate results in standard phantom, i.e., 95.2%, 86.7%, 94.3%, 94.8%, 93.1% and 97.3%. Then on replica phantom accuracy is 94.7%, 95.6%, 96.2%, 86.0%, 91.6% and 96.6%. Keywords: Treatment planning system (TPS), Dose, Standard phantom, Non-homogeneous phantom, Replica phantom, Non-homogeneous tissue
ANALISIS DOSIS SERAP RELATIF BERKAS ELEKTRON DENGAN VARIASI KETEBALAN BLOK CERROBEND PADA PESAWAT LINEAR ACCELERATOR Lamtiyah Ikha Indriyana; Eko Hidayanto; Zaenal Arifin
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

During radiotherapy treatment, critical organs are shielded using cerrobend blocks. The objective of this study was to define the minimal thickness of cerrobend blocks so that the relative absorbed dose in target less than 5%. All measurements were performed using linac Siemens/Primus Mclass 5633. Phantom relative absorbed dose were measured for square field 10 x 10 cm2. The thickness of cerrobend blocks were 2, 4, 6, 8 and 10 mm. The measurements in water were performed using compact chamber fitted with acrylic build up caps.The minimal thickness of cerrobend blocks for 5, 10 and 14 MeV electron beams are 2, 4 and 6 mm, respectively. The relative absorbed dose for phantom’s surface, maximum depth and x-ray tail using those blocks are 0.12%, 0.16%, 0.21%, 2.18%, 1.56%, 1.16%, 2.92%, 2.47% dan 1.70%.The relative absorbed dose decreases with the increasing of cerrobend block  thickness and phantom depth. Therefore, if cerrobend blocks are used to protect critical organs, the thickness should be taken into account accurately.Keywords: cerrobend blocks, relative absorbed dose, electron beams
ANALISA TINGKAT KONTAMINASI DOSIS NUKLIR DAN LAJU PAPARAN RADIASI PADA INSTALASI KEDOKTERAN NUKLIR Rafli Filano; 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

The research has been analyzed the level of nuclear contamination and radiation exposure rate at installation of nuclear medicine with efforts a radiation protection is the prevention or decrease the number of entry of radioactive material into the human body. The method used to conduct measurement a count of contamination of surface work area resulting from the use of radioactive substances and carried out at a distance of 0.5 cm between the detector window with contaminated areas, while measuring the radiation exposure rate in each of center room at height of 1 meter from the surface of the floor in various rooms installation of nuclear medicine. The results of measurement obtained levels of contamination nuclear dose in various rooms installation of nuclear medicine is from 0,16 to 243 Bq/cm2 were classified as low to high levels of contamination. While the results of measurements of the radiation exposure rate is from 0,026 to 1,693μSv/h, which is classified as below the allowable dose value level, so it is still safe for radiation workers and other patients. Keywords: Radiation Protection, Radioactive, Contamination, Radiation Exposure Rate, Nuclear Medicine
Co-Authors Abdul Rofiq Achmad Chalid Afif Afrio Rika. R Agitiya, Jeremia Yohana Agus Joko Prasetyo Agus Romadhon Agus Subagio Ahmad Pradana Alfia Hanim Ali Khumaeni Ali, Mohd Hanafi Ana Aprilia 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 Cintaniagitas, Najla Fadia 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 Insiano, Dewi A. Iva Nistiyanti Jhonwesly Manik Jonathan, Felix Josepa ND Simanjuntak Jun Kawai K Sofjan Firdausi Karnoto . Lamtiyah Ikha Indriyana M Rizqi Aditya Rahman Maghfiroh, Ummi Lailatul Mariatul Khiftiyah Maya, Annisa Tenri Miftahul Aziz Mohammad Haekal Muahamad Irsal Much. Azam Muchammad Azam, Muchammad Muhammad Irwanto Muhammad Nur Muharam Budi Laksono, Muharam Budi Mulatomo, Tunggul Drajat Naufal, Ariij 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 Septo Pawelas Arso Singgih Wibowo Sri Murni Susila Wardaya, Susila Takashi Yamamoto Teruo Tanabe Tiffany Rahma Novestiana Tina Melinda Tri Windarti Ukhti Lailun Nisa Very Richardina Wahyu Setia Budi Wahyu Tri Cahyanto Wahyuddin Wahyuddin Yoyon Wahyono Yoyon Wahyono Zaenal Arifin