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All Journal Jurnal Fisika Unand JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Profesi Medika: Jurnal Kedokteran dan Kesehatan Journal of Physics and Its Applications Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Journal of Multidisciplinary Applied Natural Science
Fiqi Diyona, Fiqi
Jurusan Fisika FMIPA Universitas Andalas
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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The Comparison of Surface Dose in Vivo Dosimetry Using 3D-CRT and IMRT Technique on Breast Cancer Case Wulandari, Sri; Ulya, Syarifatul; Diyona, Fiqi; Adrial, Rico; Prasetio, Heru
Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan Vol 18 No 1 (2024): Jurnal Profesi Medika : Jurnal Kedokteran dan Kesehatan
Publisher : Fakultas Kedokteran UPN Veteran Jakarta Kerja Sama KNPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33533/jpm.v18i1.7771

Abstract

The aim of this study is to verify the adequacy of the surface radiation dose calculated by the Treatment Planning System (TPS) using 3DCRT and IMRT technique with the dose measured by the TLD-100, referring to the report of the American Association of Physicists in Medicine Task Group No.219 (AAPM-TG No.219). This research process began with annealing the TLD-100 at the Research Center for Safety Technology Metrology and Nuclear Quality of the National Innovation Research Agency (PRTKMMR-BRIN), followed by scanning the TLD-100 on the surface of the phantom plate using a CT simulator. In addition, the TLD-100 was calibrated with different radiation doses (0; 20; 50; 80; 100; 150; 200; 250; 370) cGy. Verification of the surface radiation dose was performed by calculating the TPS surface dose by Patient Specific Quality Assurance (PSQA) and comparing it with the dose measured by the TLD-100. The result is Radiation techniques such as IMRT are more conformal than 3D-CRT because they precisely control dose intensity, making the TLD dose in IMRT closer to TPS. Differences in detector types such as TLD also affect the results of radiation dose measurements. Continuous assessment of patient dose is important for the safety of radiation therapy.
Analisis Dosis OAR Pada Radioterapi Kanker Payudara Sinistra Di Rumah Sakit Universitas Andalas Fardela, Ramacos; Putri, Adinda Mahesa; Andriani, Innes; Diyona, Fiqi; Analia, Rika; Mardiansyah, Dedi
Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Vol 9, No 2 (2023)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15548/nsc.v9i2.6785

Abstract

Kanker payudara menempati urutan pertama di Indonesia dan menjadi salah satu penyumbang kematian utama akibat kanker. Penanganan Kanker payudara dapat dilakukan menggunakan terapi radiasi atau biasa disebut radioterapi. Salah satu modalitas yang sering digunakan dalam radioterapi adalah Linear Accelerator (Linac). Agar terapi radiasi dapat mengenai target kanker dan aman Organ-At-Risk (OAR) perlu dilakukan evaluasi perencanaan terapi radiasi. Evaluasi dilakukan terhadap dua teknik perencanaan terapi radiasi yaitu teknik Three Dimensional Conformal Radiotherapy (3D-CRT) dan Intensity Modulated Radiation Therapy (IMRT). Uji terapi radiasi dilakukan terhadap 3 orang pasien kanker payudara kiri. Hasil analisis dosis pada OAR menggunakan teknik 3D-CRT diperoleh sebaran dosis target dan perlindungan terhadap OAR lebih baik dibandingkan dengan teknik perencanaan 2D. Perencanaan terapi radiasi terbaik diperoleh pada teknik IMRT. Pada teknik perencanaan tersebut diperoleh sebaran dosis lebih homogen pada target maupun capaian dosis pada OAR sekitar target kanker.
Assessment of LINAC Source Radiation Dose around Healthy Organs Using Treatment Planning System Calculation Fardela, Ramacos; Candra, Ega Septryan; Milvita, Dian; Mardiansyah, Dedi; Ridwan, Ridwan; Diyona, Fiqi; Mousa, Almahdi
Journal of Multidisciplinary Applied Natural Science Vol. 5 No. 2 (2025): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.253

Abstract

The negative effects of increased radiation dose can impact healthy tissue surrounding the target area, necessitating careful management to minimize side effects and meticulous planning in radiation therapy. This study aims to determine the peripheral dose of a 6 MV photon beam and compare the measured values with the estimates from the Treatment Planning System (TPS). Dose calculations were performed using the Analytical Anisotropic Algorithm (AAA) in the ECLIPSETM TPS on a virtual water phantom with a 6 MV photon beam, delivered by a Clinac CX linear accelerator (LINAC) at Unand Hospital. Photons were used with variations in target depth of 1.5, 5, and 10 cm, as well as variations in measuring distances of 3, 5, 7, 10, and 15 cm outside the irradiation field. The area of irradiation used varied of 5×5 and 10×10 cm2. The measurement results based on the distance of the field edge showed that the dose percentage decreased below 10% when passing a distance of 5 cm for a field area of 5×5 cm2, and for a field area of 10×10 cm2, the dose percentage decreased below 10% after passing a distance of 7 cm from the edge of the irradiation field. The peripheral dose intensity in the area outside the target will decrease along with the increasing measurement distance from the edge of the field and the depth due to the interaction of radiation with the medium, which causes the spread and absorption of photons in the medium.
Radiation Dose Evaluation for Radiotherapy Workers at Unand Hospital Using Four-Element Thermoluminescence Dosimetry Fardela, Ramacos; Milvita, Dian; Rasyada, Latifah Aulia; Almuhayar, Mawanda; Diyona, Fiqi; Mousa, Almahdi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 12 No 2 (2023): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v12i2.18101

Abstract

Radiotherapy is a non-surgery therapy that employs ionizing radiation like X-ray or even radiation to cure cancer as a curative activity. Radiation dose rate analysis is required for the person who worked on radiotherapy to strengthen safety precautions for radiation protection, notably in oncology radiation. The research attempted to disclose time trends and radiation dose rate exposure variations among personnel in radiotherapy installation. Radiation dose examination utilizing four-elements TLD received from 16 respondents grouped into six groups (radiation oncologist, medical physicist, radiotherapist, electromedicine, nurse, and sculptor). The number of occupancy exposures rose 55.5% from 2018 to 2022. The most significant annual radiation dose rate for 900 patient workloads attained by medical physicists was 0.996 mSv. In addition, electronics receive the lowest annual radiation dose at Unand Hospital. Annual effective dose exposure by radiation is still safe, below national or international regulations. However, a protective improvement process is vital to limit radiation interaction, particularly for medical physicists, who are the most vulnerable to radiation exposure.
Dosimetric Analysis of 6 MV Energy Photon Radiation Beam on Flatness and Symmetry on Linac in Radiotherapy Installation of UNAND Hospital Analia, Rika; Fardela, Ramacos; Ridwan, Ridwan; Diyona, Fiqi; Muttaqin, Afdhal
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 13 No 2 (2024): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v13i2.24016

Abstract

A dosimetric analysis of a 6 MV photon energy radiation beam on flatness and symmetry in LINAC radiotherapy at UNAND Hospital has been conducted. The aim was to measure the quality of the photon beam using an ion chamber cc 13 detector by observing the beam profile and analyzing the effect of field size and irradiation depth. This study used a blue phantom as the object of irradiation with 6 MV photon energy and variations in irradiation field size.  The results showed that the PDD curve at 6 MV energy was by the international standard recommended by BJR-25. Then, the average values of flatness and symmetry in the field area of 10×10 cm2 and 15×15 cm2 are 1.6% and 2.4% for flatness and 2.3% and 1.9% for symmetry. Thus, the dose distribution is more uniform, and both the left and right sides of the profile on the center axis appear balanced, which will help deliver the dose to the patient better. Thus, these values are suitable for clinical use. This study found that the beam profile was larger on the left side of the main axis. This must be considered to ensure the dose distribution complies with the established safety standards. The results also show that variations in the field area and irradiation depth can affect the beam profile, and the resulting flatness and symmetry values are in accordance with the IAEA TRUS-381 and AAPM TG-142 recommendation standards, which are ±2% flatness and ±3% symmetry.
Determination of Planning Target Volume (PTV) Margins Using Redefined Systematic and Random Error Equations from Single-Fraction Verification Data: A Case Study of Cervical Cervic Lestari, Tuti; Muttaqin, Afdhal; Hanisti, Fidhia; Diyona, Fiqi
Journal of Physics and Its Applications Vol 7, No 3 (2025): August 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i3.24532

Abstract

This study aimed to determine the Planning Target Volume (PTV) margin by redefining the equations for systematic and random errors in a cervical cancer case. The research utilized first-fraction radiotherapy position verification data from 37 cervical cancer patients. These data comprised planned and actual positions, with the difference interpreted as the position shift. The systematic and random error equations proposed by the Royal College of Radiologists (2008) were redefined by adapting them to verification data, which were grouped into several PTV types and treated as daily fractions. The PTV margin was then calculated using formulas by Van Herk (2004), Stroom (2002), and ICRU Report 62. The results showed that the largest systematic and random errors occurred in the vertical and longitudinal directions, measuring 0.83 cm and 1.71 cm, respectively. The PTV margin calculated using the Van Herk method was comparatively larger than those obtained using the other two methods. The percentages of position shifts that exceeded the calculated PTV margins in the vertical, longitudinal, and lateral directions were 16%, 43%, and 35%, respectively. These findings indicate that the redefined equations are capable of compensating for the lack of position shift data across all radiotherapy fractions. The redefined approach can provide a more accurate estimation of PTV margins in cervical cancer treatment using single-fraction verification data. 
Analisis Pengaruh Sudut Penyinaran terhadap Dosis Permukaan Fantom Berkas Radiasi Gamma Co-60 pada Pesawat Radioterapi Diyona, Fiqi; Milvita, Dian; Herlinda, Sri; Sandy, Kri Yudi Pati
Jurnal Fisika Unand Vol 5 No 2 (2016)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.5.2.131-135.2016

Abstract

Telah dilakukan pengukuran dan perhitungan pengaruh sudut penyinaran terhadap dosis radiasi permukaan fantom dengan menggunakan thermoluminescence-dosemeter-100 (TLD-100). Penelitian dilaksanakan di instalasi radioterapi salah satu rumah sakit di kota Padang menggunakan pesawat terapi Co-60. Pengukuran menggunakan teknik SSD 80 cm dan luas lapangan 10 cm x 10 cm. Faktor kalibrasi TLD-100 adalah 0,022 cGy/nC. Penelitian dilakukan dengan memvariasikan sudut penyinaran dari 0° hingga 170°. Nilai dosis radiasi permukaan fantom berkisar antara 70,415 hingga 102,341 cGy. Hasil perhitungan menunjukkan sudut penyinaran memberikan pengaruh terhadap terimaan dosis radiasi pada permukaan fantom, namun dosis radiasi pada permukaan yang diterima fantom tidak linear dengan kenaikan sudut penyinaran.Kata kunci: dosis radiasi permukaan, faktor kalibrasi, sudut penyinaran, TLD-100
Analisis Dosis Radiasi Paru-Paru Pasien Kanker Payudara dengan Teknik Three Dimensional Conformal Radiation Therapy (3D-CRT) Berdasarkan Grafik Dose Volume Histogram (DVH) Febrietri, Ovia; Milvita, Dian; Diyona, Fiqi
Jurnal Fisika Unand Vol 9 No 1 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.9.1.110-117.2020

Abstract

Telah dilakukan analisis dosis radiasi pada paru-paru enam orang pasien kanker payudara yang mendapat terapi radiasi sinar-X 6 MV dengan teknik penyinaran Three-Dimensional Conformal Radiation Therapy (3D-CRT). Penelitian ini bertujuan untuk memenuhi asas optimasi dan limitasi dalam proteksi radiasi dengan mengevaluasi dosis radiasi yang diterima target kanker berdasarkan ICRU Report 62, dan dosis yang diterima paru-paru pasien kanker payudara berdasarkan QUANTEC, serta mengetahui efek yang ditimbulkan pasca terapi. Pengambilan data dilakukan pada hasil kurva Dose Volume Histogram (DVH) yang didapatkan dari perencanaan penyinaran oleh dokter dan fisikawan medis di Rumah Sakit Universitas Andalas. Hasil penelitian yang didapatkan pengobatan pasien memenuhi asas optimasi karena mendapatkan dosis radiasi yang maksimal pada daerah target kanker. Nilai dosis radiasi yang diterima paru-paru pada tiga orang pasien tidak memenuhi asas limitasi karena melebihi aturan yang ditetapkan oleh QUANTEC, dan salah satu dari pasien mengalami pneumonitis. Hasil evaluasi dosis radiasi pada Planning Target Volume (PTV) dan paru-paru yaitu dosis radiasi yang diterima paru-paru pasien melebihi aturan QUANTEC dan menjadi salah satu risiko terjadinya pneumonitis. Radiation doses in the lungs of six breast cancer patients who received 6-MV X-ray radiation therapy with the Three Dimensional Conformal Radiation Therapy (3D-CRT) radiation technique has been analysed. This study aims to fulfill the principles of optimization and limitation in radiation protection by evaluating the radiation dose received by the cancer target based on ICRU Report 62, and the dose received by the breast cancer patient's lungs based on QUANTEC, as well as knowing the effects caused post-therapy. Data collection was performed on the results of the Dose Volume Histogram (DVH) curve obtained from radiation planning by doctors and medical physicists at Andalas University Hospital. The results of the study found that the treatment of patients fulfills the principle of optimization because they get the maximum radiation dose in the cancer target area. The value of the radiation dose received by the lungs in three patients did not meet the limitation principle because it exceeded the rules set by QUANTEC, and one of the patients had pneumonitis. The results of the radiation doses on the Planning Target Volume (PTV) and lungs, is the radiation dose received by the patient's lungs exceeds the QUANTEC rule and increases the risks of pneumonitis.
Verifikasi Nilai Dosis Radiasi Berkas Elektron Pesawat LINAC dengan Luas Lapangan Blok Cerrobend (6×6) cm2 dan (8×8) cm2 Berdasarkan Protokol IAEA TRS 398 Ramona, Fransischa; Milvita, Dian; Diyona, Fiqi
Jurnal Fisika Unand Vol 9 No 2 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.9.2.238-243.2020

Abstract

Telah dilakukan penelitian  verifikasi nilai dosis radiasi berkas elektron pesawat LINAC dengan luas lapangan blok cerrobend (8×8) cm2, (6×6) cm2 dan tanpa blok (10×10) cm2. Penelitian bertujuan memperoleh  nilai dosis radiasi menggunakan blok cerrobend dan tanpa blok agar sesuai dengan dosis radiasi Treatment Planning System (TPS) dan batas toleransi yang ditetapkan protokol IAEA TRS 398 yaitu ±2%.  Pada penelitian digunakan energi berkas elektron (4, 6, 9, dan 12) MeV menggunakan slab phantom dengan detektor ionisasi chamber plane parallel.  Ketebalan blok cerrobend yang digunakan adalah 1,83 cm.  Hasil penelitian menunjukkan bahwa dosis radiasi yang dihasilkan menggunakan blok cerrobend lebih tinggi daripada tanpa menggunakan blok cerrobend. Hal ini karena semakin luas ukuran lapangan radiasi, maka akan semakin rendah dosis radiasi yang diterima dan semakin banyak radiasi hambur terjadi.  Nilai deviasi dosis radiasi yang terukur pada slab phantom terhadap dosis radiasi TPS masih memenuhi toleransi yang ditetapkan oleh protokol IAEA TRS 398 yaitu  -0,81 % sampai dengan 1,36%. Verification of radiation values of instrument LINAC electron beam with field size of the cerrobend block (8×8) cm2, (6×6) cm2and without block (10×10) cm2 has been conducted.  This study aims to get the value of radiation dose using cerrobend blocks and without block to equal with dose radiation Treatment Planning System (TPS) and the tolerance limits established protocol IAEA TRS 398 which is ± 2%. The study use electron beam energy (4, 6, 9, and 12) MeV using slab phantom with ionization chamber plane parallel detectors.  The thickness of the cerrobend block use  1.83 cm. The results show that using cerrobend block produce a greater dose radiation than without block.  This due to the larger the size of the radiation field, the lower the dose received and the more scaterring radiation. Deviation value dose radiation of measurement in slab phantom to dose radiation TPS still within the tolerance by protocol IAEA TRS 398 that is -0.81% to 1.36%.
Distribusi Dosis Radiasi Foton Berdasarkan Variasi Kedalaman dan Luas Lapangan Penyinaran Pada Fantom Menggunakan Peawat Linac Tipe Clinac Cx Wulandari, Indria; Shafii, Mohammad Ali; Adrial, Rico; Diyona, Fiqi
Jurnal Fisika Unand Vol 11 No 1 (2022)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.11.1.89-96.2022

Abstract

Telah dilakukan penelitian mengenai analisis distribusi dosis radiasi foton berdasarkan variasi kedalaman dan luas lapangan penyinaran pada fantom menggunakan pesawat Linac tipe Clinac CX. Pengukuran distribusi dosis radiasi dilakukan untuk menganalisis distribusi dosis radiasi foton pada tiap kedalaman dan luas lapangan penyinaran agar dosis pada target dan organ kritis dapat dilihat dan mendapatkan dosis yang optimal berdasarkan  kurva isodosis. Kurva isodosis dibuat menggunakan data Percentage Depth Dose (PDD) dan profile dose (PD) pada berkas foton 6 MV dan 10 MV pada  kedalaman 5 cm, 10 cm, 15 cm, 20 cm, 25 cm, 30 cm dan luas lapangan penyinaran 10x10 cm2, 15x15 cm2, 20x20 cm2, 25x25 cm2, 30x30 cm2, 35x35 cm2, 40x40 cm2. Metode yang digunakan dalam pengolahan data PDD dan PD menggunakan teknik interpolasi linear supaya memiliki interval yang sama yaitu 0,25, kemudian menggunakan teknik pembobotan untuk menghitung dosis radiasi di tiap titik menggunakan Matlab. Kurva PDD menunjukkan bahwa persentase dosis radiasi dipengaruhi oleh kedalaman dan  tidak dipengaruhi oleh luas lapangan penyinaran terhadap  nilai  dosis radiasi. Kurva isodosis yang terbentuk dipengaruhi oleh kedalaman, luas lapangan penyinaran dan energi radiasi. Semakin bertambah kedalaman, semakin menurun persentase dosis radiasi dan semakin datar kurva yang dihasilkan. Dosis radiasi meningkat seiring dengan meningkatnya ukuran luas lapangan penyinaran
Co-Authors Abrar, Luthfia Aqila Adrial, Rico Afdhal Muttaqin Almuhayar, Mawanda Analia, Rika Andriani, Innes Candra, Ega Septryan Dedi Mardiansyah Defira, Eli Dian Milvita Fathanah, Nurul Febrietri, Ovia Hanisti, Fidhia Heru Prasetio Kri Yudi Pati Sandy, Kri Yudi Pati Lestari, Tuti Liasari, Ike Putri Mohammad Ali Shafii Mousa, Almahdi Ningsih, Desy Yulia Putri, Adinda Mahesa Rafli, Rhandyka Ramacos Fardela Ramona, Fransischa Rasyada, Latifah Aulia Ridwan, Ridwan Sri Herlinda, Sri Sri Wulandari Syafna, Delvira Ulya, Syarifatul WULANDARI, INDRIA