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All Journal International Journal of Science and Engineering (IJSE) BERKALA FISIKA SAINS DAN MATEMATIKA Jurnal Ilmiah Aplikasi Isotop Radiasi YOUNGSTER PHYSICS JOURNAL Jurnal Riset Industri Hasil Hutan Journal of Physics and Its Applications JURNAL MAHASISWA BK AN-NUR : BERBEDA, BERMAKNA, MULIA Jurnal Ilmiah Padma Sri Kreshna Jurnal Abdimas Bina Bangsa Jurnal Ilmiah Agroust
Evi Setiawati
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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PENENTUAN FAKTOR TRANSFER DAN GROWTH VALUE 134Cs DAN 60Co PADA TANAMAN BUNGA MATAHARI (Helianthus anuus L.) DENGAN CARA HIDROPONIK UNTUK KAJIAN AWAL FITOREMEDIASI Mohammad Afif Rachmatulloh; Evi Setiawati; Poppy Intan Thahaja
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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Research of determining transfer factor and growth value of 134Cs and 60Co on sunflower plants (Helianthus anuus L.) by means of hydroponics has been carried out, to obtain value of the transfer factor on sunflower plant against 134Cs and 60Co in hydroponic media. This research was conducted by growing sunflower plants on soil media until the age of 50 days and then transferred into a plastic gutter containing 134Cs and 60Co for 30 days. Number of 134Cs and 60Co absorbed and accumulated by the plant parts, namely the roots, stems, and leaves were observed by measuring the activity of 134Cs and 60Co in parts of the plant using a gamma spectrometer. The value of the transfer factor is determined by comparing the concentration of 134Cs and 60Co which accumulated by the plants against concentration in hydroponic media. From this research, the highest growth value is 2,49 for active plant on the 30thday and 4.33 for the control plants on the 25th day. The highest transfer factor value is 261.39 ml / g for 134Cs on the 25th day and 5.94 ml / g for 60Co on the 25th day. The value of the transfer factor which is more than 1 ml / g indicates that the sunflower plant is a plant that has the ability to accumulate radionuclides 134Cs and 60Co.  Keywods: Sunflower Plant, Transfer Factor, 134Cs, 60Co, Phytoremediation, Growth Value
PENGARUH VARIASI JARAK DETEKTOR, LUAS LAPANGAN RADIASI DAN POSISI DETEKTOR DARI PUSAT BERKAS RADIASI MENGGUNAKAN MULTI PURPOSE DETECTOR (MPD) PADA PENGUKURAN TEGANGAN SINAR-X Evi Handriani Bertua Simamora; Choirul Anam; Evi Setiawati
Youngster Physics Journal Vol 2, No 2 (2013): Youngster Physics Journal April 2013
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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An evaluation of the distance effect of Multi-Purpose Detector (MPD)-X ray source, variations of field size of radiation and position of the MPD on the X-ray voltage measured, have been done. There are necessary because they have not been recommended from the MPD procedure manual yet. The detector operated at voltage of 70 kV and current-time of 12.5 mAs. The measurement of voltage using MPD from RTI Electronics product. It is multifunction detector that can measure dose and voltage invasively. The previous step is measurement of dose for ensure correct equipment setting. These measurements is done for several variations such as MPD-X ray distance of  60 - 160 cm, field sizes 0f 4x4 cm - 40x40 cm2, detector's position of 0 (at center of beam) and 1-11 cm from centre of beam.   The results are obtained that the voltage that measured is not affected by all of variation values such as distance difference of MPD-X ray source,  field sizes and detector's position. Furthermore, for measurement of outside of radiation beam, MPD   can still measur voltage with good validation. Therefore, the measurement of voltage using MPD has high flexibility because it is not influenced by set up measurement.Keywords: The X ray voltage measurement, Multi-Purpose Detector (MPD), Barracuda.
PERBANDINGAN DOSIS TERHADAP VARIASI KEDALAMAN DAN LUAS LAPANGAN PENYINARAN (BENTUK PERSEGI DAN PERSEGI PANJANG) PADA PESAWAT RADIOTERAPI COBALT-60 Dortua Helena Sidabutar; Evi Setiawati
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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A research on the determination of the dose of radiation to the shape of the field square and rectangular fields, this is because the cancer is irregular morphology (irregular). If the radiation dose given is not in accordance with the size, as well as cancer cell geometry is happening is damage healthy tissue surrounding the cells. Determination of the dose is done by adjusting the gantry position Cobalt-60 aircraft at an angle of 0 °, the distance (SSD) radiation source 80 cm from the surface of the phantom which has been coupled with an electrometer and computer devices. For wide field irradiation with a square shape set with field size (6.6 x 6.6), (10.8 x 10.8), (12 x 12), (13.3 x 13.3), and (14 , 2 x 14.2) cm. For a broad field with a rectangular field shape is set by the size (5 x 10), (10 x 12), (10 x 15), (10 x 20) and (10 x 25) cm. Further irradiation for each phantom depth of 1, 3, 5, 7, 9 cm for 60 sekon in a sequence corresponding variations in the size of the specified field as much as 3x (three times) measurements, so that the average value obtained. From the determination and comparison of research results in the field of irradiation dose to the shape of square and rectangular fields, obtained dose values between square and rectangular field is almost the same, is the difference between 0.04 to 1.30 Gy. This result is certainly more convincing in the broad field of use square and rectangular fields in conducting irradiation. This result has also been successfully proven formulation A / C that has been done. Then the value of the dose received phantom decrease with increasing depth phantom is used, with the state of doses already passed the point of his dmax.Keywords: radiotherapy, irradiation field, the depth of phantom
DETEKSI EFUSI PLEURA PADA CITRA THORAX MENGUNAKAN JARINGAN SYARAF TIRUAN PROPAGASI BALIK MELALUI EKSTRAKSI CIRI BINER Elvira Situmorang; Kusworo Adi; Evi Setiawati
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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The research about detection pleural effusion of the thoracic using neural network back propagation by binary feature extraction has been done. A common cause of pleural effusion disease is cancer. It is estimated that pleural effusion malignant affects 150,000 people every year in the United States. The normal pleural space only has a few milliliters of liquid that helps lubricate of the lungs during breathing. Pleural effusion (large amounts of liquid in the pleural space) can lead to a partial or complete compression of the lung. The difficulty to distinguish excess accumulation of fluid in the pleural cavity should be minimized by radiologist. This research contributes interpretation pleural effusion in the thoracic and reduces doubts of doctor in the treatment of patients. The purpose of this research is to develop algorithms to identify pleural effusion using artificial neural networks back propagation by binary feature extraction the thoracic. Binary feature extraction is obtained from the level set segmentation. The process of image enhancement by histogram equalization and contrast enhancement should be performed before the level set segmentation process. Binary feature extraction patterns were training on ANN was taken from 5% until 25% of costophrenic angle in the thoracic. Neural network can recognize the characteristic patterns of the binary feature 15% are well trained. Validation ANN pattern training by up to 100%, while process of testing the ANN is able to identify 14 data from 15 test data to test validation value reaches 93.33% on the condition of  setting 2 hidden layers, each of hidden layer contain 10 neurons. Keywords: Pleural effusion, Binary feature extraction, Artificial neural networks, Histogram, level set segmentation.
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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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 
REKONSTRUKSI CITRA CT DENGAN METODE BACK PROJECTION (BP) DAN ALGEBRAIC RECONSTRUCTION TECHNIQUE (ART) MENGGUNAKAN MATLAB Ariyanti Nur Anisa; Evi Setiawati; Choirul Anam
Youngster Physics Journal Vol 1, No 1 (2012): Youngster Physics Journal Oktober 2012
Publisher : Jurusan Fisika, Fakultas Sains dan Matematika, Universitas Diponegoro

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Have been made CT image reconstruction with Back Projection method (BP) and Algebraic Recontruction Technique (ART) used Matlab. Image reconstruction used parallel beam in the projection angle from 0 to 180 degree, with interval 5, 7,5 and 10 degrees. In this research, the number pixels was 30x30. The result shows us that image reconstruction used BP method  still there are lots of blurring, while the image reconstruction used  ART method can display the same object with the original image. In the smaller interval of the angle projections, then it will get better results, but it takes longer. Keywords: image reconstruction, parallel beam, back projection, algebraic reconstruction technique
ANALISIS PENGARUH PERUBAHAN SENTRASI DOSIS DAN JARAK BLADDER TERHADAP DISTRIBUSI DOSIS PADA PERENCANAAN BRACHYTHERAPY KANKER SERVIKS Rinarto Subroto; Evi Setiawati; Suwardi Suwardi
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 research has been done about the analysis of the change dose sentration and bladder distance’s effect toward dose distribution in brachytherapy planning of cervical cancer. The purpose of this research is to describing dose distribution which is appropriate with criteria, to evidance dose reduction because raising bladder distance from point A, and to achieve how long the bladder distance’s from point A which is can produce the dose distribution criteria appropriate.The methods of this research is measuring bladder distance from point A in lateral projections of radiographs, doing brachytherapy planning which is using early dose sentration at the point A. The sample who is have not ideal dose disribution doing brachytherapy planning with dose sentration at point bladder. The dose distribution which is producted from the change of dose sentration has analysis to know how about brachytherapy planning succes percentage. To evidance about dose reduction because raising of bladder distance’s, has done with making distance and bladder dose’s relation graph.The results of this research is: changing of dose sentration can increasing cervical brachytherapy planing successed about 46%, raising mean distance about 1,57 mm can reduce bladder mean dose about 5,65%, inverse square law still valid for brachytherapy planning case’s although can’t used to determine how much dose at the bladder, bladder distance from point A which is can deliver dose percentage lower about 80% is more than 41 mm.Keywords: Dose sentration, bladder distance, dose distribution.
ANALISIS POSISI DETEKTOR TERHADAP STEM EFFECT DAN DOSIS RELATIF UNTUK DOSIMETRI PESAWAT LINAC 6 MV Nurul Laili Khoirut Tabi’atin; Evi Setiawati; 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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Research conducted aims to determine the effective position’s detector for Percentage Depth Dose ( PDD ), crossline and inline scanning in dosimetry linac 6 MV with analisys of relative dose and minimal stem effect on the detector. Research carried out by using detector CC TNC / 9770 and detector CC TNC / 9776 with variety on the position of the detector on axes x1, y1, x2 and y2, and  wide field irradiation of 10 x 10 cm2 at SSD 100 cm. On this research for PDD  scanning, position’s detector coincide to relative dose and at any depth. The largest is in position y1 with measurement dose  100.06 %. So position y1 used as reference position for measurement of stem effect. For PDD  scanning ratio stem effect on the position of y2, x2, and x1 are 0.260521 %, 0.049995 % and 0.140112 %. So the effective position’s detector for PDD scanning is position x2 with the ratio of the smallest stem effects is 0.049995 %. For crossline scanning, position x1 used to an form position for measurement of stem effect because have the largest measurement of relative dose that is 100.04 %. For crossline scanning ratio stem effect on the position of y1, x2 and y2 are 0.080032 %, 0.080032 %  dan 0.240481 %. In position y1 and x2 have a same of ratio stem effect, but based on distribution of measurement dose in the beginning and the end scanning, effective position of the detector for crossline scanning in position y1. For inline scanning, position x1 used as reference position for measurement of stem effect because have the largest measurement of relative dose that is 100.00 %. So position y1 used as reference position for measurement of stem effect. For inline scanning ratio stem effect on the position of y2, x2, and x1 are 0.070049 %, 0.020004 %  and 0.010001 %. So the effective position’s detector for inline scanning is in position x1 which has the smallest stem effect is 0.010001 %.Keyword: PDD scanning, crossline scanning, inline scanning, relative dose, stem effect.
KARAKTERISTIK THERMOLUMINESCENT DOSIMETERS UNTUK DOSIMETRI IN VIVO PADA RADIOTERAPI EKSTERNA Mursiyatun Mursiyatun; Evi Setiawati; Zaenul Muhlisin
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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The Characteristics of Thermoluminescent Dosimeters (TLD) for in vivo dosimetry in external radiotherapy have been examined. The research was intended to determine the TLD calibration factor and TLD correction factors to various radiation doses, source surface distance (SSD), size field and angle of incidence so that the TLD can be beneficial for in vivo dosimetry. TLD was placed on the surface of solid water phantom and ionization chamber at the reference depth (10 cm). Then was irradiated using 6 MV photons with variation in radiation doses, SSD, size field and angle of incidence. The research  resulted in the TLD calibration factor (4,26 + 0,3) x 10-2 cGy/nC. The value of TLD correction factors at the number of MU 100, SSD 100 cm, size field 10 x 10 cm2 and angle of incidence 00 was 1.Keywords: Thermoluminescent Dosimeters (TLD), in vivo dosimetry, calibration factor, correction factor
Co-Authors Agus Margiantoro Ahadiyah, Naeli Ni'matin Ana Aprilia Anak Agung Gede Sugianthara Ardiansyah, Mustofa Ariyanti Nur Anisa Asep Yoyo Wardaya Awwalin, Aufi Rizqiatul Binu Soesanto, Qidir Maulana Bunawas Bunawas Choirul Anam Choirul Anam AM Diponegoro Cicilia Artitin Cory Amelia Dessy Dian Monita Pardede Djoko Heru Pamungkas Dodi Junaedi Dortua Helena Sidabutar Eko Hidayanto Elvira Situmorang Erna Mariani Evi Handriani Bertua Simamora F Arianto Fajar Arianto Galih Puspa Saraswati Gede Sutresna Wijaya Gutji, Nelyahardi Hammam Oktajianto Hammam Oktajianto Handini Devi Yunitasari Harahap, Nur Hasanah Ifa Istighfaroh Indras Marhaendrajaya Intan Andriani Jatmiko Endro Suseno K Sofjan Firdausi K. Sofjan Firdausi Kusworo Adi Maria Theresia Darini Masdi Masdi Maulana, Alsa Putra Mochammad Facta Mohammad Afif Rachmatulloh Much. Azam Muchammad Azam, Muchammad Mursiyatun Mursiyatun Nanang Suriansyah Ngurah Ayu Ketut Umiati Nina GInanto Putri Nur Indah Lestari Nurul Laili Khoirut Tabi’atin Pandji Triadyaksa Poppy Intan Thahaja Rahmadi Setyawan Rahmaningtyas, Avivah Riana Anis Safitri Ridwan Eko Susanto Rinarto Subroto S Juliawan S. Suryono Sanggam Ramantisa Sanggam Ramantisan Sanggam Ramantisan Sari, Devi Artika Setiyono Setiyono Stefani, Eska Sudrajat, Ignasius Suprih Sumariyah M.Si Sumariyah Sumariyah Suroto Suroto Susilo Hadi, Susilo Suwardi Suwardi Syahria Syahria Trisna Budiwati Verry Richardina, Verry Very Richardina Very Richardina Wijianto Wijianto Windarta, Jaka Yunianta Yusup Hidayat Zaenal Arifin Zaenul Muhlisin Zainul Muhlisin