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All Journal MEDIA MEDIKA INDONESIANA BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL Jurnal Teknik Sipil dan Perencanaan Jurnal Fisika Unand The Indonesian Biomedical Journal Arsitektura : Jurnal Ilmiah Arsitektur dan Lingkungan Binaan Jurnal Arsitektur ARCADE Jurnal Arsir Journal of Physics and Its Applications Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Arsitektur ZONASI Cendekia Journal of Pharmacy Physics Communication Jurnal Arsitektur ARCADE Jurnal Pengabdian Masyarakat Inovasi Indonesia
Wahyu Setia Budi
Department Of Physics, Faculty Of Science And Mathematics, Diponegoro University
Arts Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : SAINS DAN MATEMATIKA

 1 
Pengamatan Efek Magnetooptis Menggunakan Interferometer Fahrurazi, Michelson; Firdausi, Ketut Sofjan; Budi, Wahyu Setia
JURNAL SAINS DAN MATEMATIKA Volume 14 issue 4 Year 2006
Publisher : JURNAL SAINS DAN MATEMATIKA

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ABSTRACT---The magnetooptic effect of transparency material such as aquarium glass, acrylic, and micro slide has been studied using Michelson Interferometer. The change of refractive index to magnetic field B is obtained by placement of samples in a coil applied on altered field 0-0,2 T. Results of interferometer test show that change of refractive index is linearly dependent on B for acrylic and slide. However, for aquarium glass, it is on B2 dependency. This result is agreement to previous experiment that the structure of acrylic and slide is formed more regular as B applied. Keywords: Magnetooptic effect, refraction index, interferometer
PENINGKATAN EMISI HIDROGEN MELALUI ATOM HELIUM METASTABIL DENGAN METODE LASER INDUCED PLASMA PADA SAMPEL ZIRCALOY Maliki, Maliki; Firdausi, Ketut Sofjan; Budi, Wahyu Setia
JURNAL SAINS DAN MATEMATIKA Volume 17 Issue 2 Year 2009
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ABSTRACT-Telah dilakukan  analisis  unsur  hidrogen  dari sampel  zircoloy  dan  sampel  batu  hitam melalui  pembangkitan  plasma  gelombang  kejut menggunakan laser Nd YAG (1064 nm, 8 ns, 68 mJ)  pada tekanan  rendah  dengan  mengalirkan  gas helium dan gas nitrogen sebagai  gas penyangga  di  dalam  ruang sampel.  Penelitian  dilakukan  untuk menunjukkan  pengaruh  atom  helium metastabil  pada  peningkatan  emisi hidrogen. Pengaruh atom  helium  metastabil pada  peningkatan emisi  hidrogen  ditunjukkan  dengan membandingkan  penggrmaan  gas  nitrogen  dan  gas  helium sebagai  gas  penyangga  pada  tekanan  2 torr dan  5 torr. Dari penelitian,  intensitas  emisi  hidrogen  menggunakan  gas  nitrogen  pada  tekanan  2 torr dan  gas  helium pada  5  torr untuk  sampel  zircaloy masing-masing  diperoleh  sebesar  317,0  cacah/detik  dan  4370,0  cacah/detik, sedangkan  pada  sampel  batu  hitam masing-masing  diperoleh  sebesar  297,6 cacah/detik  dan 694,0 cacah/detik. Hasil  ini  menunjukkan  atom helium metastabil  yang dihasilkan melalui helium sebagai  gas penyangga berpengaruh  terhadap  peningkatan  emisi  hidrogen  pada  sampel  zircaloy dan  batu  hitam. Kata  kunci : sampel zircaloy, sampel batu hitam, laser induced plasma, atom helium metastabil,  emisi hidrogen dan emisi helium.
Evaluasi Ketebalan Irisan (Slice Thickness) pada Pesawat CT-Scan Single Slice Makmur, I Wayan Ari; Setiabudi, Wahyu; Anam, Choirul
JURNAL SAINS DAN MATEMATIKA Volume 21 Issue 2 Year 2013
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An evaluation of the value of the slice thickness due to changes in tube voltage and tube current on the CT scan have been performed. The evaluation is done by making images using CT performance test phantom. Testing is done by performing three scanning on each slice. Exposure factors used were 120 kVp-60 mA, 160 mA 120-kVp, 140-kVp 60 mA, and 140 kVp 160 mA. Nominal beam width were 2 mm, 3 mm, 5 mm, 7 mm, and 10 mm. Once the axial image was obtained (on the area for slice thickness determination),  then calculated the average CT number on the region of interest (ROI). After it was made graphs to determine the value of FWHM which indicates the magnitude of the thickness of the slice. From the test results obtained that changes in tube voltage and tube current does not affect the value of the thickness of the slice. Also found that the value of slice thickness for each thickness, greater than the nominal beam width.   Keywords: Phantom CT Performance Test, Slice Thickness, CT-Scan    Telah dilakukan evaluasi terhadap nilai slice thickness terhadap perubahan tegangan tabung dan arus tabung pada pesawat CT scan. Pengujian dilakukan dengan membuat citra menggunakan fantom CT performance test. Pengujian dilakukan dengan melakukan eksposi sebanyak tiga kali pada tiap-tiap slice. Faktor eksposi yang digunakan yaitu 120 kVp-60 mA, 120 kVp-160 mA, 140 kVp-60 mA, dan 140 kVp-160 mA. Slice thickness yang diuji adalah ketebalan 2 mm, 3 mm, 5 mm, 7 mm, dan 10 mm. Setelah didapatkan citra aksial pada bagian daerah uji slice thickness, maka diambil beberapa lokasi ROI dan dihitung rerata CT Number, kemudian nilai tersebut dibuat grafik dan ditentukan nilai FWHM yang menunjukkan besarnya slice thickness. Dari hasil pengujian diketahui perubahan tegangan tabung dan arus tabung tidak berpengaruh terhadap nilai slice thickness. Hasil pengukuran diketahui bahwa nilai slice thickness untuk masing-masing ketebalan, lebih besar dibanding nominal beam width. Kata kunci : Simulasi Monte Carlo, Percentage Depht Dose (PDD), Dose Profile, Inhomogenitas Jaringan.
Analisis Perubahan Kurva Percentage Depth Dose (PDD) dan Dose Profile untuk Radiasi Foton 6MV pada Fantom Thoraks Prasetyo, Nur Dwi; Setiabudi, Wahyu; Anam, Choirul
JURNAL SAINS DAN MATEMATIKA Volume 20 Issue 4 Year 2012
Publisher : JURNAL SAINS DAN MATEMATIKA

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The study of thickness variation of the soft tissue in the wall of thoracic phantom to the shifting of Percentage Depht Dose (PDD) curve and Dose Profile have been done by using Monte Carlo Simulation. The linac head was designed using BEAMnrc software, whereas modeling of water and thoracic phantom using DOSXYZnrc software. The field size of beam radiation 10 x10 cm2 and the distance of source to  phantom surface (SSD) 100 cm. The water phantom in cubic shape with a size  40x40x40 cm3. The thoracic phantom was designed in cubic shape, with the compositions: soft tissue, bone and lung. The thickness of the soft tissue in the wall of throcic phantom was varied 1-5 cm. This variation shows the thickness layer of the wall of the real patients. The results of comparation between monte carlo simulation and the  actual measurement, show that 6 MV photon delivered by linac at Kensaras Hospital Semarang was generated using energy electron about  5.7 MeV. The variation of soft tissue thickness change  the PDD curve and the dose profile curve. The variation of soft tissue thickness change the dose in the lung (depth 10 cm)  at about 3,84% - 5,59%   Keywords: Monte Carlo Simulation, Percentage Depht Dose (PDD), Dose profle, Tissue inhomogeneity    Telah dilakukan studi pengaruh ketebalan jaringanlunak pada fantom thoraks terhadap perubahan bentuk kurva  Percentage Depht Dose (PDD) dan Dose Profile untuk berkas foton energi 6MV menggunakan Simulasi Monte Carlo. Pembuatan model treatment head linac dilakukan menggunakan program BEAMnrc, sedang permodelan fantom air maupun fantom thoraks menggunakan DOSXYZnrc. Luas lapangan yang digunakan 10x10 cm2, dengan source to skin distance (SSD) sebesar 100 cm. Fantom air didesain berukuran 40x40x40 cm3. Fantom thoraks didesain berbentuk kubus dengan komposisi jaringan lunak, tulang, dan paru-paru. Jaringan lunak bagian depan (asterior) divariasi ketebalannya 1-5 cm. Variasi ini menggambarkan ketebalan jaringan lunak dinding thoraks pasien. Hasil perbandingan antara simulasi dan pengukuran menunjukan bahwa foton 6 MV yang dihasilkan pesawat linac RS Kensaras Semarang menggunakan energi elektron pembangkit mendekati 5,7 MeV. Variasi ketebalan jaringan lunak pada dinding fantom thoraks memberikan perubahan kurva PDD dan juga kurva profil dosis. Variasi ketebalan jaringan lunak tersebut mengubah besarnya dosis pada paru-paru (pada kedalaman 10 cm) sebesar 3,84% - 5,59% Kata kunci : Simulasi Monte Carlo, Percentage Depht Dose (PDD), Dose Profile, Inhomogenitas Jaringan.
Pengaruh Perubahan Tegangan Tabung (kVp) Terhadap CT Number dan Uniformitasnya pada Pesawat CT Scan S., Anugrah Ariyani; Setiabudi, Wahyu; Anam, Choirul
JURNAL SAINS DAN MATEMATIKA Volume 20 Issue 3 Year 2012
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Abstract

An examination of consistency of CT numbers and its uniformity due to variation of the tube voltage has been done. The examination was conducted using water and polyethyelene phantoms as a test object. The method of scanning, which are  axial  scanning  and helical scanning. The scanning was taken 5 (five) slices with slice thickness of 5 mm. Variations in  tube voltage used were 80 kV, 120 kV and 140 kV.  The tube current 160 mA and time scanning 2 seconds. It was obtained that the increase in voltage from 80 kV to 140 kV led to increase the value of CT number both for water and polyethylene phantoms. The uniformity of CT number for all ROI varies, but still within the range of tolerance limits. The CT number for the water phantom does not exceed 0 ± 5 HU and for polyethylene phantom does not exceed -300 to -100 HU..   Keywords: CT Scan, CT number, uniformity, tube voltage (kV)
Studi Uniformitas Dosis Radiasi CT Scan pada Fantom Kepala yang Terletak pada Sandaran Kepala Retnoningsih, Dwi Siwi; Anam, Choirul; Setiabudi, Wahyu
JURNAL SAINS DAN MATEMATIKA Volume 20 Issue 2 Year 2012
Publisher : JURNAL SAINS DAN MATEMATIKA

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The research on the impact of tube current and  tube voltage  on uniformity of the point dose in the head phantom was placed on the table, had been conducted. The research was carried out on the CT Scan machine, Siemens Somatom Emotion 6. The detector used was CT dose profiler and Piranha Electrometer 556. The phantom was head phantom with PMAA material with diameter 16 cm and length 15 cm. The measurement of point dose carried out by using axial mode. The measurement conducted in five points inside the head phantom. In this research, the tube current and tube voltage were varied. The results show that the point dose on the head phantom was placed on the table is non-uniform. At the bottom of the phantom, the dose is lower to below 50% than at the top of the phantom.   Keywords: CT Scan, Dose uniformity, Point Dose, CTDI
Co-Authors Ade Ika Susan Afgani, Jundi Jundullah Agung Dwiyanto Ahmad Mutohar Ainul Ibnu Khotob Alan Tanjung Aji Prastowo Alfian Rizani Ali Khumaeni Anis Nila Kusuma Anugrah Ariyani S. Arif Fahmi Arifah, Dwi Intan Asep Yoyo Wardaya Astrihasna Shafa Bambang Haris Suhartono, Bambang Haris Choirul Anam Choirul Anam AM Diponegoro Chorirul Anam Dewandaru, Ardian Dewantoro, Fajar Dewantoro, Fajar Dhahryan Dhahryan Dini Desita Dwi Siwi Retnoningsih Eddy Prianto Eko Hidayanto Erni Setyowati Fadil Nazir Fajar Arianto Fatkhiyatul Athiqoh G. B. Suparta Gagoek Hardiman Gagoek Hardiman Gani Gunawan Gani Gunawan Hamdani, Muhammad Alif Iza Handayani, Liska Tri Harianja, Bernard Hendrika Liana Sari Heri Sugito Heri Sutanto Hidayatullah, Aydymas Davansyah I Wayan Ari Makmur Ismail Ismail Istifadatun Ni’amah Juhroh, Aminatul Jundi Jundullah Afgani K Sofjan Firdausi K. Sofjan Firdausi Kaka, Susanti Radi Kesawa Sudarsih Ketut Sofjan Firdausi, Ketut Sofjan Khomilia, Crysant Ayu Sufi Kusminarto Kusminarto Kusminarto Kusminarto Kusminarto Kusminarto Kusworo Adi Liska Tri Handayani Maesadji Tjokro Nagoro Maesadji Tjokro Nagoro Maliki Maliki Maria Carizza Pandora Raharjo Masrokan Masrokan Masrokan, Masrokan Michelson Fahrurazi Much Azam Muhamad Adi Muharam Budi Laksono, Muharam Budi Nora Fajria Nur Dwi Prasetyo Pandora Raharjo, Maria Carizza Prasetyo Basuki Pratama, Arthana Setia Priyono, Setyo Purwanto Purwanto Qalby, Luthfia Rahmawati, Fatimah Dwi Rini Shintawati Rozanah Rozanah Rusmaharani, Diyah Sihotang, Pandapotan Sugiarto, Oki Suhardi Suhardi Sunarsih Sunarsih Supriyati Supriyati Suryono Suryono Susanti, Audry Nadifa Susila Wardaya, Susila Susilo Susilo Susilo Susilo Susilo Susilo Sutiah Sutiah Sutiyowati Sutiyowati, Sutiyowati Sutrati Melissa Malik Syamsiar, Syamsiar Taqwim S, M Ainut Titi Purwati Tri Wulan Tjiptono Tri Wulan Tjiptono Very Richardina Vitria, Yati Weirna Yusanti Wibowo, Danang Rujito Widiastuti, Ratih Wulandhari Wulandhari Zaenal Arifin