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All Journal JFA (Jurnal Fisika dan Aplikasinya)
Aditya Prayugo Hariyanto Aditya Prayugo Hariyanto
Department of Physics, Institut Teknologi Sepuluh Nopember, Kampus ITS-Sukolilo Surabaya
Physics

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Assessment of 3D-Printed Bolus for Post-Mastectomy Breast Cancer Radiation Therapy: Urifa Nabihal Aini, Hayfa Annisa, Diska Maharani, Aditya Prayugo Hariyanto, Agus Rubiyanto, Nasori Nasori, Aloysious Mario, Endarko Endarko Urifa Nabihal Aini Urifa Nabihal Aini; Hayfa Annisa Hayfa Annisa; Diska Maharani Diska Maharani; Aditya Prayugo Hariyanto Aditya Prayugo Hariyanto; Agus Rubiyanto Agus Rubiyanto; Nasori Nasori; Aloysious Mario Aloysious Mario; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 20 No 2 (2024): June 2024 Edition
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.
Optimization of Low-Dose Pediatric Chest CT Examination: Pediatric Phantom Study: Dafa Miftahuddin, Audiena Gelung Prayitno, Aditya Prayugo Hariyanto, Djuli Pontjowijono, Endarko Endarko Dafa Miftahuddin Dafa Miftahuddin; Audiena Gelung Prayitno Audiena Gelung Prayitno; Aditya Prayugo Hariyanto Aditya Prayugo Hariyanto; Djuli Pontjowijono Djuli Pontjowijono; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 20 No 1 (2024): January 2024 Edition
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.
Co-Authors Agus Rubiyanto Agus Rubiyanto Aloysious Mario Aloysious Mario Audiena Gelung Prayitno Audiena Gelung Prayitno Dafa Miftahuddin Dafa Miftahuddin Diska Maharani Diska Maharani Djuli Pontjowijono Djuli Pontjowijono Endarko Endarko Hayfa Annisa Hayfa Annisa Nasori Nasori Urifa Nabihal Aini Urifa Nabihal Aini