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Atom Indonesia
Published by Badan Riset dan Inovasi Nasional
ISSN : 01261568     EISSN : 23565322     DOI : -
Core Subject : Science,
Energy Physics
Atom Indonesia is dedicated to publishing and disseminating the results of research and development in nuclear science and technology. The scope of this journal covers experimental and analytical research in nuclear science and technology. The topics include nuclear physics, reactor physics, radioactive waste, fuel element, radioisotopes, radiopharmacy, radiation, and neutron scattering, as well as their utilization in agriculture, industry, health, environment, energy, material science and technology, and related fields.
Arjuna Subject : Fisika dan Astronomi - Fisika Nuklir dan Molekuler, dan Ooptik
Articles 79 Documents
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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.
Acknowledgement Atom Indonesia Vol 51 No 2 indonesia, atom
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.2025.1771

Abstract

Investigation of Dose Effect of ICRP110 Male and Female Head Phantoms During BNCT and PBFT by Monte Carlo Simulations Korkut, H.; Korkut, T.; Singh, V. P.
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.2025.1541

Abstract

Boron Neutron Capture Therapy (BNCT) and Proton Boron Fusion Therapy (PBFT) are of great interest in the field of radiation oncology. These treatment methods may offer different advantages and disadvantages depending on the type of tissue involved, as well as the location and size of the cancerous area. In this study, radiation dose effect of BNCT and PBFT on the brain, one of the most sensitive organs of the human body, was examined comparatively, based on the ICRP110 male and female head phantom models by using GEANT4 Monte Carlo simulations. Additionally, some necessary LET (Linear Energy Transfer) calculations are also presented in the article. Dose, LET and Energy deposition values of GEANT4 calculations were presented for BNCT and PBFT therapies in details for male and female phanthom comparatively.
The Dependence of the Rupture Probability on the Mass Number of the Fissionable Nucleus Auliya, Z.; Kurniadi, R.; Irwanto, D.
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.2025.1647

Abstract

The relationship between the mass number of fissionable nuclei and fission yield is generally known through the fission barrier. The deformation energy of the SEMF determines the probability of the formation of fission products. The use of deformation energy is very impractical because it goes through many calculation stages. For this reason, the Neck Rupture Model was introduced, namely a model that shortens the stages of the calculation process through the rupture probability formula. In this paper, a new technique was introduced that adds the dependence of the rupture probability on the mass number of the nucleus that will undergo fission. Apart from this, this technique also obtained better fission yield calculation data compared to the previous technique. The fission yield calculations of Uranium isotopes at an energy of 14 MeV will be shown.
Cover Atom Indonesia Vol 51 No 2 indonesia, atom
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.2025.1769

Abstract

Preface Atom Indonesia Vol 51 No 2 indonesia, atom
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.2025.1770

Abstract

Optimizing Quality Assurance in Breast IMRT Treatment Plans: A Comparative Study of Point Dose and 2D Dose Verification Herwiningsih, S.; Noor, J. A. E.; Widodo, C. S.; Munthe, D. Y. B.; Hentihu, F. 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.2025.1651

Abstract

Intensity-Modulated Radiation Therapy (IMRT) requires rigorous dose verification to ensure accurate radiation delivery. This study evaluates point dose verification and 2D dose verification techniques in detecting dose discrepancies due to isocenter shifts in IMRT treatment for post-mastectomy breast cancer cases. Five post-mastectomy breast IMRT plans were retrospectively analyzed, with phantom-based measurements compared against Treatment Planning System (TPS) calculations. The results indicate that point dose verification provides reliable absolute dose measurements, but lacks spatial resolution, whereas 2D verification captures dose variations more effectively. Dose discrepancies remained within acceptable limits for shifts up to ±3 mm, but shifts of ±5 mm or more resulted in clinically significant deviations. Gamma Passing Rates (GPR) decreased substantially beyond ±5 mm shifts, underscoring the importance of precise patient positioning. These findings support the integration of both verification methods to improve IMRT quality assurance, particularly in resource-limited settings. Future advancements in AI-driven dosimetry and real-time in vivo monitoring may further optimize dose verification, enhancing treatment accuracy and patient safety.
Strategic Intelligence Analysis in The Integration of National Defense Components to Counter The Threat of Nuclear Terrorism in Indonesia Rajagukguk, M. H.; Gunawan, B.; Santoso, M.; Ratmono, B. M.
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.2025.1426

Abstract

The development of nuclear science presents multifaceted benefits across diverse sectors, including energy, health, construction, agriculture, and food production. However, the proliferation of nuclear technology introduces the complex challenge of dual-use, encompassing both constructive applications and potential misuse for nefarious purposes such as terrorism. Indonesia, like many nations, faces this dual-use dilemma, necessitating robust defense mechanisms to safeguard against nuclear terrorism threats. This study aims to investigate and enhance Indonesia's defense system against nuclear terrorism by emphasizing integration and strategic intelligence within its defense components. The primary objective is to analyze the integration and coordination mechanisms among the main, supporting, and reserve components of Indonesia's defense system to strengthen strategic analysis and intelligence efforts in combating nuclear terrorism threats. Through a qualitative research methodology employing an analytical approach, data collection encompasses expert interviews, observations, and an extensive literature review. The study identifies various threat risks and potential initiators of nuclear terrorism attacks, highlighting the critical role of integrated defense components in addressing these threats effectively. Findings reveal the indispensable roles of the main, supporting, and reserve components in executing intelligence functions, including investigation, security, and information gathering, to mitigate the threat of nuclear terrorism. Despite their distinct roles, these components require seamless integration and coordination to maximize strategic analysis efforts and intelligence sharing. The research identifies several constraints hindering the effective implementation of integration and strategic intelligence within Indonesia's defense components. These constraints necessitate targeted improvements to enhance the nation's capability to mitigate the threat of nuclear terrorism effectively. In conclusion, this study underscores the significance of integration and strategic intelligence within Indonesia's defense system to confront the evolving threat landscape of nuclear terrorism. By addressing research gaps and proposing actionable recommendations, this research contributes to strengthening Indonesia's defense posture against nuclear terrorism, thereby ensuring national security and global stability.
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.
Analysis of Alpha and Lithium-7 Particle Energy Deposition in BNCT using Geant4 Simulation Charef, K.; Ahlaf, F. Z.; Khoulaki, Y.; Benchekroun, D.; Harrass, H.; Fathi, I.; Makhkhas, Y.
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.2025.1501

Abstract

This study investigates the microdosimetric characteristic of Boron Neutron Capture Therapy (BNCT) using high-fidelity Monte Carlo simulations to quantify the energy deposition distributions of alpha and lithium-7 particles within cellular structures. The Geant4 toolkit is utilized to model various physics lists and water representations, aiming to optimize the accuracy of BNCT simulations. Dosimetric and microdosimetric studies using these Monte Carlo techniques are conducted to examine the behavior of the produced alpha and lithium-7 particles and their energy deposition in different cellular compartments. Our findings contribute to the understanding of BNCT’s effects at the cellular level, which is crucial for advancing treatment planning and minimizing side effects.

Page 7 of 8 | Total Record : 79

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