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All Journal International Journal of Electrical and Computer Engineering BERKALA FISIKA Jurnal Ilmu Dasar Jurnal Materi dan Pembelajaran Fisika Jurnal Sains dan Seni ITS Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Forum Nuklir Jurnal Sains Materi Indonesia IPTEK The Journal of Engineering IPTEK Journal of Proceedings Series Jurnal Neutrino : jurnal fisika dan aplikasinya Jurnal Teknik Elektro JFA (Jurnal Fisika dan Aplikasinya) JURNAL INTEGRASI International Journal of Social Science and Business IJITEE (International Journal of Information Technology and Electrical Engineering) Indonesian Journal of Physics (IJP) Sewagati
Endarko Endarko
Departemen Fisika, Institut Teknologi Sepuluh Nopember, Surabaya 60111 Indonesia
Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Optimization of Low-Dose Pediatric Chest CT Examination: Pediatric Phantom Study Miftahuddin, Dafa; Prayitno, Audiena Gelung; Hariyanto, Aditya Prayugo; Pontjowijono, Djuli; Endarko, Endarko
Jurnal Fisika dan Aplikasinya Vol 20, No 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i1.19814

Abstract

This study uses a Pediatric Thoracic phantom developed in-house to optimize low-dose pediatric chest CT examinations based on organ-specific dose and image quality. Four low-dose protocols, low kV and low mA, reconstructed using Filtered Back Projection (FBP) and iterative reconstruction (IR) algorithms, were investigated. Lung, heart, and spinal cord doses were measured using calibrated Gafchromic LD-V1 Film. Evaluation of image spatial resolution and noise are considered. The CTDIvol results underestimate organ-specific doses. Low kV exposed an average dose of 29.55% less than low mA. No significant differences existed in the MTF curves of standard, low mA, or low kV doses. The peak NPS for low kV is significantly higher than for low mA. The combination of low kV and FBP produces images with better high spatial resolution. Meanwhile, combining low mA with an IR algorithm effectively reduces image noise so that low-contrast object detection improves.
Assessment of 3D-Printed Bolus for Post-Mastectomy Breast Cancer Radiation Therapy Aini, Urifa Nabihal; Annisa, Hayfa; Maharani, Diska; Hariyanto, Aditya Prayugo; Rubiyanto, Agus; Nasori, Nasori; Mario, Aloysious; Endarko, Endarko
Jurnal Fisika dan Aplikasinya Vol 20, No 2 (2024)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v20i2.20671

Abstract

The fabricated 3D-printed bolus with 5 mm thick PLA and TPU materials was successfully used to analyze the air gap, relative electron density ( RED), and mass attenuation coefficient values for Post-Mastectomy Breast Cancer Radiation Therapy (PMRT). The 3D bolus was designed using 3D-Slicer Segment Editor software according to the thickness used, then smoothed and finished using Autodesk Meshmixer software, and printed on a 3D Creality printer. The air gap value was then analyzed by taking images from the phantom and 3D-printed bolus on a CT-Scan, then processed on Radiant DICOM, and the air gap value for the two 3D bolus materials was obtained. Analysis of two 3D bolus materials, PLA and TPU, showed that TPU is more suitable for bolus use in postmastectomy breast cancer cases based on its material properties. In addition, TPU is also better in terms of the air gap value because it has a smaller air gap, an RED value that is almost close to that of breast tissue, and better mass attenuation. Therefore, the recommended 3D-printed bolus material is TPU with a thickness of 5 mm as a tissue substitute for postmastectomy breast cancer cases.
Image Quality Assessment of In-House Phantom for Pediatric Computed Tomography Prayitno, Audiena Gelung; Miftahuddin, Dafa; Hariyanto, Aditya Prayugo; Gani, Muhammad Roslan Abdul; Endarko, Endarko
Jurnal Fisika dan Aplikasinya Vol 21, No 2 (2025)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v21i2.20434

Abstract

The study aimed to determine the estimated low dose and image quality of the in-house pediatric phantoms using the 128 slice CT-Scan. This study used in house pediatric phantoms (7 year). Twelve artificial cylinder targets were fabricated with diameters 3, 5, 8, and 10 mm, and CT densities -+100, -400, -750 HU. The image quality was performed using CT-Scan 128 slice (GE) with parameters of helical scanning using a low dose and standard dose and using 80 and 120 kV. For Signal noise to ratio (SNR), Contrast to Noise Ratio (CNR) were also investigated. Volumetric CT dose index (CTDIvol), Size‐Specific Dose Estimates (SSDE). The effective value of the diameter for 7-year-old was 20.15 cm. According to the study, the amount of radiation exposure measured as SSDE for in-house pediatric phantoms was found to be 3.71 mGy for low dose and 6.09 for standard dose. For image quality analysis, the low-dose CT protocol has a detection sensitivity of 100% for targets measuring > 5mm in diameter.  
Co-Authors Achmad Muklason Adawiyah, Siti Rabi’atul Adi Suryani Adi Suryani, Adi Adi Wardana Agus Purwanto Agus Purwanto Agus Rubiyanto Ahmad Muklason Ahmad Ridlo Hanifudin Tahier Aini, Urifa Nabihal Akbar Sujiwa Akhmad Jufriadi Akhmad Muklason Akhmad Muklason Annisa, Hayfa Arfan Eko Fahrudin Ari Bangkit Sanjaya Umbu Aris Widodo Ayu Jati Puspitasari Ayu Jati Puspitasari Badri G.S Berto Mulia Wibawa Berto Mulia Wibowo Bintoro Anang Subagyo Cahyono, Yoyok Christianti, Kurnia Hastu Christiono Utomo Darminto Darminto Darminto Darsono Darsono Diani Ainun Nisa Djuli Pontjowijono Dzulfikar, Ahmad Zaki Eli Zahrotin, Eli Ellys Kumala Pramartaningthyas Fajar, M N Farahdina, Ulya Farid Afandy, Farid Fatimah, Iim Firdhaus, Miftakhul Gani, Muhammad Roslan Abdul Gatut Yudoyono Gontjang Prayitno Hadi Santoso Haekal, Mohammad Hakim, Randy Ivanal Hariyanto, Aditya Prayugo Hariyanto, Aditya Prayugo Hena Dian Ayu Ikfina Himmaty Imam Safawi Ahmad, Imam Safawi intan permata sari Khambali, Khambali Khusnul Ain Kurriawan Budi Pranata Kurriawan Budi Pranata, Kurriawan Budi Maharani, Diska Mahendra Satria Hadiningrat Mahendra, Daffa Malik Anjelh Baqiya Mario, Aloysious Mashuri Mashuri Masyitatus Daris S Maylita Martani Maylita Martani Melania S Muntini Miftahuddin, Dafa Miftakhul Firdhaus Moh. Roni Hidayat Mohammad Haekal Muhammad Noer Fajar Muthmainnah, Melania Suweni Muntini Nainggolan, Andreas Nasori, Nasori Novi D. Ariyanti Nuning Armawati Nur Ichzan Aminuddin Siantang Nurrisma Puspitasari Nurul Amalia T Nurul Amalia Triyuliana Nuzula, Nike Ika Pramartaningthyas, Ellys Kumala Prayitno, Audiena Gelung Putro, Triswantoro R Hidayat Rahmawati, Deti Rahmawati, Deti Rizqa Daniyati S Suasmoro, dkk Santi Puspitasari Setiawan Siti Aisyah Siti Rabiatul Adawiyah Siti Zahrok Soedarso Soedarso Soedarso Soedarso Soedarso Soedarso Soedarso Soedarso Soedarso, Soedarso Suasmoro Suasmoro Sukamto, Heru Sulistyanto, Muhammad Priyono Tri Suminar Pratapa Susilo Indrawati Sutikno Triswantoro Putro Triswantoro Putro Triwikantoro Triwikantoro Ulya Farahdina Vicran Zharvan Vinda Zakiyatuz Zulfa Wardana, Humadillah Kurniadi Wardhana, Adhitya Aris Yugo Triawanto Zainuri (DOI: 10.12962/j24604682.v12i2.1331), Mochamad Zaki Suud Zulfa, Vinda Zakiyatuz