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All Journal Jurnal Konseling dan Pendidikan Prosodi: Jurnal Ilmu Bahasa dan Sastra QALAMUNA: Jurnal Pendidikan, Sosial, dan Agama JURNAL PENDIDIKAN TAMBUSAI AL-TANZIM : JURNAL MANAJEMEN PENDIDIKAN ISLAM Jurnal Lentera Pendidikan Pusat Penelitian LPPM UM Metro Indonesian Research Journal on Education Innovative: Journal Of Social Science Research Journal of Innovative and Creativity J-CEKI AL-ADABIYAH: Jurnal Pendidikan Agama Islam Atom Indonesia
M. Fadli
Fakultas Perikanan Universitas PGRI Palembang
Religion Arts Humanities Chemistry Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Journal : Atom Indonesia

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A Multicenter Study of IMRT Dosimetry Audit Testing Using C-shape Phantom Dwinesti, B.; Ryangga, D.; Dimitri, F.; Handika, A. D.; Fadli, M.; Putranto, A. M. Y.; Suharsono, S; Pawiro, S. A.
Atom Indonesia Vol 51, No 2 (2025): AUGUST 2025
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/aij.2025.1412

Abstract

Intensity Modulation Radiation Therapy (IMRT) is a complex radiotherapy technique, so independent verification or dosimetry audits must be performed to ensure that accurate dosing is delivered to patients. This study conducted a multicenter audit using a dosimetry audit method developed from the IAEA dosimetry audit for IMRT/VMAT. The phantom in this study is made of acrylic material with two insert structures: planning target volume (PTV) and organ at risk (OAR). Phantom was scanned with a CT simulator at each hospital, and dose distribution was simulated with a PTV prescription dose of 4 Gy/2 fraction (D95 % = 95 %, D2 % < 107 %, and Dmax < 110 %) and a maximum OAR dose of 2.8 Gy. Dose evaluation in this study used TLD-rod for point dose and Gafchromic Film EBT3 for 2D dose distribution. Gamma evaluation was performed for film dose distribution with 3 %/3 mm and 3 %/2 mm criteria. The IMRT dosimetry audit using a C-shape phantom was tested in seven linacs (dynamic and static MLC) from six centers in Jakarta. The TLD results for PTV and OAR point dose show that all 14 IMRT plans meet deviation tolerance within ± 5 %. The film EBT3 evaluation identified that almost all plans pass the minimum 95 % gamma passing rate for 3 %/3 mm criteria and the minimum of 90 % for 3 %/2 mm. Three plans from three centers were also compared to the Gayatri (2022) study data from the same centers. Both results showed that all plans pass the action level ≥ 90 % for both 3 %/2 mm and 3 %/3 mm. Our audit dosimetry study approach employs a small and compact C-shaped phantom and dosimetry, facilitating easier distribution for remote audits. This study could serve as a starting point for remote audits leading to broader multicenter research in Indonesia.
Verification of Breast Cancer Treatment Planning with Various Radiation Techniques Using Monte Carlo Simulations and Linac Log Files Sugandi, R. D.; Azzi, A.; Fadli, M.; Sihono, D. S. K.
Atom Indonesia Vol 51, No 3 (2025): DECEMBER 2025
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/aij.2025.1618

Abstract

Due to the complexity of radiotherapy techniques, rigorous Patient-Specific Quality Assurance (PSQA) is crucial to ensure the accuracy of treatment plans. This study aims to evaluate the performance of the Treatment Planning System (TPS) by comparing its dose distribution calculations with those obtained from the PRIMO Monte Carlo simulation. Treatment plans for 3D-CRT, IMRT, and VMAT were generated for a Rando breast phantom using the TPS. Subsequently, the dose distributions from the TPS were compared with those obtained from the PRIMO Monte Carlo simulation. Key metrics, including Homogeneity Index (HI) and Conformity Index (CI), were calculated to assess the quality of dose distribution. Furthermore, the dose constraints on OARs were evaluated to assess the impact on surrounding healthy tissues. To further validate the TPS, dose distributions from the linac log file (Dynalog) for VMAT were reconstructed within the PRIMO environment. These reconstructed distributions were then compared with the dose distributions calculated directly by the TPS. Gamma index analysis was employed to evaluate the agreement between these two sets of data. The comparison between TPS and Monte Carlo simulations revealed that 3D-CRT plans exhibited smaller deviations in HI and CI compared to IMRT and VMAT plans. However, a significant improvement in HI and CI values was observed in both IMRT planning simulations and Dynalog VMAT file simulations, indicating enhanced plan quality. The dose received by OARs in all treatment plans remained within the acceptable dose thresholds, demonstrating effective sparing of surrounding healthy tissues. For the PSQA procedure, the 3D-CRT technique is still the safest due to its lower level of complexity compared to IMRT and VMAT. More complex treatments should consider the robustness of treatment transfer information from TPS to linac to avoid dosimetry errors.
Co-Authors Abdullah, Anton Ainul Mardhiah, Ainul Al Fahri Amalia, Direstu Azzi, A. Dimitri, F. Dwinesti, B. Elmayanti, Elmayanti Firdaus, Muhammad Bayu El Handika, A. D. Hasibuan, Nurul Husna Hermala, Zusnita Israyani, Israyani Khairul Amri Lathifah Hanum, Lathifah Maisari, Ayu Marithasari, Harries Mazlan, Mazlan MUCHAMMAD FAIZIN Muhammad Nur Nurdin Nurdin Pawiro, S. A. Putranto, A. M. Y. R. Rusli Rahimah, Anna Rahimah, Syarifah Rahmawaty, Indah Nur Rosminawati, Rosminawati Ryangga, D. Sabaruddin Sabaruddin Safrizal Safrizal Sihono, D. S. K. Sugandi, R. D. Suharsono, S Sukmawati . Sulistiyo, Miftahul Mahya Syahrul R, Syahrul Syuhada, Muhsin Wahyu Budi Priatna Wahyudi, Iin Wiguna, Satria Wildan Nugraha Yazid, M. Ariq Yeti Komalasari