Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal Journal of Medical Physics and Biophysics Jurnal Spektra Jurnal Penelitian Sains Jurnal Profesi Medika: Jurnal Kedokteran dan Kesehatan Spektra: Jurnal Fisika dan Aplikasinya PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Cancer
Supriyanto Ardjo Pawiro
University Of Indonesia
Aerospace Engineering Biochemistry, Genetics & Molecular Biology Chemistry Electrical & Electronics Engineering Energy Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Other

Published : 25 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 25 Documents
Search

 1   2   3 
Occupational Dose Estimation with Field Size, Position and C-Arm Gantry Tilt Variations During Interventional Cardiology Procedures Nurdina Gita Pratiwi; Supriyanto Ardjo Pawiro; Kristina Tri Wigati; Djarwani S. Soejoko
Journal of Medical Physics and Biophysics Vol 1, No 1 (2014): Inaugural Issue
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1010.462 KB)

Abstract

In Interventional Cardiology, dose received by the patient is relatively higher, while the occupational would receive scattered radiation dose whose quality is relatively lower. However, the occupational received accumulative doses of all cardiovascular procedures were done over the years. Therefore, the purpose of this paper will focus to estimate the distribution of scattered dose to occupational without any protective shielding in the Cath Lab. The scattered dose rate was measured by using survey detector of Unfors Xi. The detector was placed at 6 different positions around the phantom. Each measurement position has eleven points from 25 to 175 cm above the floor with increment of 15 cm as the illustration of partial height of occupational organ. Experimentally a Rando phantom was irradiated by automatic pulsed fluoroscopy with condition varies in the range of 88-93 kV and 5.7-9.4 mA depend on gantry tilt and field size. The Philips C-arm gantry tilt was varied at 0o PA projection, 20o and 30o Caudal, 20o and 30o Cranial, and 40o and 50o Left Anterior Oblique, and also Flat Panel Detector (FPD) was varied at 20 x 20 and 25 x 25 cm2. Generally, the greatest dose rate was known at level corresponding to the waist (100 cm) of occupational and the lowest at head areas (175 cm) of occupational which is 2.49 mGv/h and 0.02 mGy/h, respectively. The given data showed that the scattered fractions are in the range of 0.001-0.060% from its primary dose at isocenter. The scattered doses tend to increase with gantry tilt for all positions. Increasing field size of FPD will decreased the scattered fraction from its dose at isocenter, and also it affects the scattered dose rate.
Perbandingan profil berkas wedge lapangan kecil foton 6 MV terhadap pengaruh jaw dan MLC sebagai pembentuk lapangan Riana Dian Pertiwi; Wahyu Edy Wibowo; Elsa Angelina; Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 5, No 1 (2018)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.328 KB)

Abstract

Kanker sinonasal memiliki karakteristik yang unik berkaitan dengan anatomi yang berdekatan dengan OAR, sehingga memerlukan gradien dosis yang tinggi untuk melakukan treatment yang dapat diamati dengan melihat FWHM dan penumbra yang dihasilkan pada profil berkas pada lapangan wedge yang dihasilkan dengan menggunakan jaw dan MLC. Wedge yang digunakan merupakan physical wedge [L1] dengan sudut 15o, 30o, 45o, dan 60o  yang dilakukan di kedalaman 1.5 cm, 5 cm dan 10 cm pada lapangan 1 × 1 cm2, 2 × 2 cm2, 3 × 3 cm2 dan 4 × 4 cm2  dengan menggunakan film Gafchromic EBT3. Hasil menunjukkan nilai penumbra dan FWHM terbesar diperoleh dengan MLC sebagai pembentukan lapangan dan nilai terkecil dengan MLC (edge) sebagai pembentukan lapangan. Perbedaan hasil tersebut dikarenakan adanya perbedaan faktor transmisi jaw dan faktor transmisi MLC, dan adanya pengaruh dari kebocoran interleaf dan transmisi pada bagian tepi dari MLC. Penggunaan wedge pada profil berkas dapat mempengaruhi nilai FWHM dan penumbra yang dihasilkan sebagai akibat adanya efek beam hardening yang muncul dengan penggunaan physical wedge. Hasil studi ini menunjukkan pembentukan lapangan dengan menggunakan MLC (edge) merupakan pembentukan lapangan secara optimal, sedangkan penggunaan wedgedapat mempengaruhi nilai FWHM yang dihasilkan. [L1]Hindari kata berulang 
Associate Medical Physicists: our bridge towards fulfilling national demand of Clinically Qualified Medical Physicists Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 5, No 1 (2018)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.9 KB)

Abstract

Journal of Medical Physics and Biophysics: the Inaugural Issue Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 1, No 1 (2014): Inaugural Issue
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.876 KB)

Abstract

Rejuvenating scientific culture in Indonesian medical physicists and biophysicists: the role of Journal of Medical Physics and Biophysics Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 4, No 1 (2017)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (119.856 KB)

Abstract

The lateral shift effect of gamma index evaluation on tomotherapy Yosi Sudarsi Asril; Nuruddin Nasution; Wahyu Edy Wibowo; Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 5, No 1 (2018)
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (592.99 KB)

Abstract

Fourteen patients with different cases have been planned and treated using helical Tomotherapy HI-ART system. To investigate the lateral shift effect on gamma index, the planning verification was evaluated for a point dose and a fluence dose measurement using ion chamber and Gafchromic EBT3 film, respectively. As a result, the difference between a measured and calculated point dose was under 3% for all interest organs, which account for 1.46±0.71% (parotid), 1.97±0.56% (pelvis and abdomen), 2.27±0.24% (brain), 1.56±0.51% (nasopharynx), and 1.43±1.3% (breast). In addition, Gamma index criteria used to evaluate fluence dose was 3mm (distance-to-agreement) and 3% (dose-difference) with 90% passed rate. Overall, the results, found in this study, shows that a lateral shift of the patient table resulted in an error beyond an acceptable tolerance if the table was shifted at more than 3mm. Gamma index criteria, then, is met if the lateral shift was within 3mm.
Volume Averaging Correction Factor of Several Detectors in Small Field Radiotherapy Dosimetry Fajar Haristyo; Supriyanto Ardjo Pawiro
Journal of Medical Physics and Biophysics Vol 1, No 1 (2014): Inaugural Issue
Publisher : Indonesian Association of Physicists in Medicine (AIPM/AFISMI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1330.199 KB)

Abstract

Various type of detector, such as ionization chamber, has been used in small field radiotherapy dosimetry. There is a limitation in detector’s dimension which can produce the volume averaging effect. Detector will average the measured dose because of fluence perturbation that happens in gas-filled cavity around detector’s active volume. Purpose of this study is to calculate volume averaging correction factor of some detectors. Volume averaging correction factor can be calculated using MATLAB based algorithm. The result shows that detector with the lowest volume averaging correction factor is SFD diode detector with volume averaging correction factor value is 1,0086 in 4 cm x 4 cm field size. Whereas GD-302 has the largest volume averaging correction, 1,6083 in 0,8 cm x 0,8 cm field size. The larger size of detector, the greater volume averaging correction factor will be produced. Therefore, detector with small enough dimension is required in order to minimize the effect of volume averaging.
PENENTUAN FAKTOR KELUARAN BERKAS ELEKTRON LAPANGAN KECIL PADA PESAWAT LINEAR ACCELERATOR Cahya Wulandari; Wahyu Edy Wibowo; Supriyanto Ardjo Pawiro
Spektra: Jurnal Fisika dan Aplikasinya Vol 1 No 1 (2016): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 1 Nomor 1, Agustus 2016
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.875 KB) | DOI: 10.21009/SPEKTRA.011.04

Abstract

Abstrak Berkas elektron memiliki distribusi dosis yang uniform di permukaan sehingga sering digunakan sebagai terapi kanker di permukaan tubuh. Kanker yang lokasinya dekat dengan organ sehat memerlukan terapi menggunakan lapangan yang kecil, sehingga dosimetri yang akurat untuk berkas elektron lapangan kecil menjadi suatu tantangan tersendiri. Pengukuran keluaran berkas elektron dilakukan dengan menggunakan detektor Exradin ion chamber A11 plan-paralel dan film gafchromic EBT-3 yang diletakkan pada slab solid water phantom pada kedalaman referensi (zref) dan kedalaman maksimum (zmax). Kedua detektor diradiasi dengan berkas elektron energi 6, 8, 10, 12, dan 15 MeV pada lapangan berukuran 1 x 1, 2 x 2, 3 x 3, 5 x 5, 8 x 8, dan 10 x10 cm2 yang terbuat dari cerrobend. Faktor keluaran ditentukan dengan rasio perbandingan antara hasil pengukuran pada kedalaman maksimum (zmax) dan hasil pengukuran pada kedalaman referensi (zref). Hasil yang diperoleh menunjukan bahwa penurunan faktor keluaran sebanding dengan penurunan energi dan luas lapangan berkas elektron. Terdapat juga perbedaan nilai hasil keluaran kedua detektor tersebut diantaranya maksimum sebesar 78.3% - 85.7% pada lapangan 1 X 1, dan minimum sebesar 0.15 % - 0.66% pada 8 X 8 disemua energi, sehingga detektor film gafchromic EBT-3 sanngat baik digunakan untuk pengukuran berkas elektron lapangan kecil. Kata-kata kunci: Berkas elektron, Lapangan kecil, Faktor keluaran, ion chamber plan-paralel, Film gafchromic EBR-3 Abstract The electron beam has a uniform dose distribution on the surface so it is often used as a cancer therapy, especially at the body surface. Cancers that are located close to organs at risk require treatment using a small field, so that accurate dosimetry for electron beam small field becomes a challenge. Output measurement performed using electron beam detector Exradin ion chamber A11 plan-parallel and gafchromic film EBT-3 placed on slab of solid water phantom at the depth of the reference (zref) and maximum depth (zmax). Both of detector is irradiated with an electron beam energy of 6, 8, 10, 12, and 15 MeV in the field of small square shaped measuring 1 x 1, 2 x 2, 3 x 3, 5 x 5, 8 x 8 and 10 x 10 cm2 made of cerrobend. Output factors is determined by the ratio between the measurement results at a maximum depth (zmax) and the measurement results on the reference depth (zref). The results obtained show that the decline in output factor proportional to a decrease field size and comprehensive energy electron beam. There are also differences in the value of the output of the two detectors are among a maximum of 78.3% - 85.7% on field 1 X 1, and a minimum of 0.15% - 0.66% on 8 X 8 in all the energy, so that the detector movie gafchromic EBT-3 sanngat well used for measurement electron beam pitch. Keywords: Small field, Electron beam, Output factor, Exradine ion chamber A11 plan-paralel, Film gafchromic EBT-3
KARAKTERISTIK DOSIMETRI FILM GAFCHROMIC EBT3 PADA BERKAS ELEKTRON DAN FOTON Syarifatul Ulya; Wahyu Edy Wibowo; Nuruddin Nuruddin; Supriyanto Ardjo Pawiro
Spektra: Jurnal Fisika dan Aplikasinya Vol 1 No 2 (2016): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 1 Nomor 2, Desember 2016
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.856 KB) | DOI: 10.21009/SPEKTRA.012.09

Abstract

Abstrak Elektron energi tinggi bermanfaat dalam radioterapi target permukaan dapat pula digunakan sebagai eskalasi dosis sumber berkas foton. Dalam jaminan kualitas radioterapi membutuhkan dosimeteryang akurat, respon yang baik terhadapdosis dan energi, resolusi spasial tinggi serta ekuivalen dengan jaringan. Berdasarkan rekomendasi AAPM TG 55, film merupakan dosimeter utama dalam pengukuran sumber radioterapi. Saat ini, film dosimetri yang sering digunakan dalam keperluan pengukuran salah satunya yaitu film gafchromic EBT3, namun penelitian mengenai karakteristik dan respon dosis pada film gafchromic EBT3 masih terbatas. Sehingga penelitian ini bertujuan untuk mengetahui karakteristik dosimetri film EBT3 pada berkas elektron dan foton. Film EBT3 diradiasi pada lapangan 10×10cm2 menggunakan berkas foton, elektron dan Cobalt-60 dengan rentang dosis (0-500 cGy). Scanner Epson V700 digunakan untuk pemindaian film dalam evaluasi pixel value. NetOD digunakan sebagai parameter untuk menganalisis karakteristik film EBT3. Nilai uncertainty pengaruh energi berada dalam rentang ±1.95% yang menunjukkan bahwa film EBT3 memiliki kebergantungan energi realtif kecil. Pemilihan channelscanner menunjukkan bahwa sensitifitas scannerpaling tinggi adalahRed channel.Pixel value dipengaruhi oleh rotasi film namun tidak oleh orientasi flipped. Pada penelitian ini, rotasi optimum dalam pemindaian film adalah posisi landscape. Kata kunci : dosimetri, film, netOD, uncertainty Abstract High energy electron used to treatment radiotherapy superficial target and dose booster photon beam. Quality assurance in radiotherapy required dosimeter which high spatial resolution, good response of doseand energy,and tissue equivalent. Based on the recommendation of AAPM TG 55, the film is primarily dosimeter measurement radiotherapy sources. Recently, film dosimetry usually used in the measurement which one is EBT3 film, however, research about the characteristic and dose response of EBT3 filmare limited. In this study, film EBT3 response on doses and energies variation using electron and photon beams is investigated. Gafchromic EBT3 film was irradiated using electron and photon also cobalt-60 beam energies. In each energy was given 0 – 500 cGy doses. Film scanning post-irradiation over a period of 72 hours using EPSON V700 and ImageJ were used to film evaluate. NetOD as the parameter to the analysis of EBT3 film characteristics. Uncertainty was required in the range of ±1.95%. Dose responses of the EBT3 film have small energy dependence..Flipped orientation not dependence on the pixel value but rotation orientation dependence for pixel value in EBT3. From this research, we recommended landscape orientation in EBT3 film scanning. Keywords: dosimetry, film, netOD, uncertainty
SIMULASI AUDIT DOSIMETRI TREATMENT PLANNING SYSTEM FOTON SINAR-X 6 MV MULTICENTER RADIOTERAPI Suwandi Suwandi; Wahyu Edy Wibowo; Supriyanto Ardjo Pawiro
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.292 KB) | DOI: 10.21009/0305020305

Abstract

TPS is an important modality determining radiotherapy outcome. According to accident and incident international reporting database in radiotherapy, TPS related occurences are among the main sources of errors. TPS requires input beam data obtained through commissioning. The errors at this step results in systematic errors. The purpose of this study is to verify TPS dosimetric to determine the deviation between the dose calculated by TPS and measured dose in phantom representing the dose received tumor targets. This study using CIRS phantom 002LFC representing the human thorax and simulates the whole chain of external beam radiotherapy activities. The phantom was scanned using CT Scanner and eight test cases were planned on TPS, was tested in four centers of radiotherapy. The dose were measured using 0.6 cm3 ionization chambers. Measured and TPS calculated doses were compared. The results of this study showed that most of the deviation are within tolerance. The deviations out of the tolerance found in most of the test cases at center radiotherapy 2. Conclusions of this study is generally, the TPS used for radiotherapy treatment planning at the four centers are good in accuracy, except TPS at center 2, most of the deviation out of tolerance. Keywords: Dosimetric audit, TPS, point dose, deviation, tumor target.
Co-Authors Ahmad Syafi'i Ahmad Zaki Dzulfikar, Ahmad Zaki Andrian Dede Handika Annisa Rahma Fauzia Ari Surya Miharja, Ari Assyifa Rahman Hakim Azzi, Akbar Cahya Wulandari Deni Hardiansyah Djarwani S. Soejoko Elsa Angelina Endang Nurtriningsih Erlin Ingrina Fajar Haristyo Fatimah Kunti Hentihu, Fatimah Kunti Fira Dwi Ananda Harfiyyah, Vivin Fashihatil Indra Budiansah Khaerul Mar'ie Kristina Tri Wigati Laras Ati Nur Fatimah Maqsuroh, Fiki Hurum Nurdina Gita Pratiwi Nuruddin Nasution Nuruddin Nuruddin Petrananda Dea Karunia Priska Andini Putri Putri Amalia Pontoh Riana Dian Pertiwi Rina Taurisia Ryangga, Dea Sonak Tioria Tarigan Suwandi Suwandi Syarifatul Ulya Syarifatul Ulya Syarifatul Ulya Terry Mart Wahyu Edy Wibowo Wahyu Edy Wibowo Wahyu Edy Wibowo Wahyu Edy Wibowo Wahyu Edy Wibowo Yosi Sudarsi Asril Yosi Sudarsi Asril Yurneli Luthan Zahro, Ummu Mar’atu