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Dosimetry Evaluations in Breast Cancer Using 3D-CRT Technique Ambarsari, Laily Izzati; Irsal, Muhammad; Sutoro, Shinta Gunawati; Apriantoro, Nursama Heru; Winarno, Guntur; Lesmana, Hadi
JURNAL PROTEKSI KESEHATAN Vol 13 No 2 (2024): JPK: Jurnal Proteksi Kesehatan
Publisher : Poltekkes Kemenkes Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36929/jpk.v13i2.933

Abstract

Several previous studies have shown that without dose evaluation and monitoring, there is a potential for deterministic radiation effects in 3D-CRT procedures. This study is expected to close the gap by conducting a more comprehensive evaluation of the 3D-CRT technique for breast cancer patients. The research method is quantitative analysis with a study sample of 20 breast cancer patients. Data processing was carried out by conducting statistical tests for the distribution value of organs at risk (OAR) against the Radiation Therapy Oncology Group (RTOG) guidelines and analyzing the conformity index (CI) and homogeneity index (HI) values according to the values recommended by the International Commission Radiation Unit (ICRU). The results of this study obtained OAR doses for the lungs and heart are still within the tolerance value limits set by RTOG p-value <0.05. then for CI and HI there is a deviation p-value <0.05 that there is a difference between the values obtained and the ICRU recommended value. This is due to the location of the target or tumor adjacent to the OAR, to keep the OAR value in accordance with the specified limit value.
ANALISIS VARIASI ARUS-WAKTU TABUNG (mAs) DAN ITERATIVE RECONSTRUCTION (IR) DENGAN PENGUKURAN MODULATION TRANSFER FUNCTION (MTF) PADA CITRA CT SCAN KEPALA Zikri, Ikhwan; Irsal, Muhammad; Sutoro, Shinta Gunawati; Winarno, Guntur; Mullah, Ikra; Akhridinata, Dinda
JOURNAL ONLINE OF PHYSICS Vol. 10 No. 2 (2025): JOP (Journal Online of Physics) Vol 10 No 2
Publisher : Prodi Fisika FST UNJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jop.v10i2.41433

Abstract

To optimize head CT examination protocols, tube current-time (mAs) variation and the use of iterative reconstruction (IR) are often combined to decrease radiation dose to patients, which may have an impact on image quality and radiation dose. Modulation transfer function (MTF) is an objective measurement to determine the spatial resolution of CT images, so it is expected to provide information on ideal optimization parameters considering radiation dose and image quality. The research method is quantitative descriptive type, data collection was carried out at one of the hospitals in Padang in the August-December period of 2024. Then CT imaging was performed using a head CT protocol that was exposed to the phantom daily CT QC with variations in tube-current of 200 mAs, 300 mAs and a combination of IR with iDose and without iDose. The analysis was performed on 10 pieces of head CT images which will then calculate the 50% MTF value using imageJ. After that, the results of the study will be carried out by making a graph of the average value and a comprehensive literature review is carried out to analyze the tube current-time variation with MTF measurements on head CT images. The results showed that the MTF values of the time-current tube and IR variations tended to have the same pattern for all, so that in this study it can be said that variations in tube current-time (mAs) and iterative reconstruction (IR) cannot affect MTF.
SOSIALISASI KEWIRAUSAHAAN KEPADA SISWA SMA NEGERI 2 SAMARINDA Nita Priska Ambarita; Leony Valencia Purba; Muhammad Irsal; Siti Rahmi; Vira Amanda
PEDAMAS (PENGABDIAN KEPADA MASYARAKAT) Vol. 1 No. 04 (2023): NOVEMBER 2023
Publisher : MEDIA INOVASI PENDIDIKAN DAN PUBLIKASI

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Data BPS pada tahun 2022 menunjukkan masih rendahnya jumlah wirausaha di Indonesia yaitu hanya sebesar 3,14% dibandingkan dengan negara Singapura, Malaysia dan Thailand. Hal tersebut membuktikan bahwa kurangnya ketertarikan masyarakat akan penting dan unggulannya menjadi seorang wirausahawan. Kegiatan ini bertujuan untuk memberikan pemahaman lebih dalam mengenai kewirausahaan mencakup komponen utama wirausaha dan rencana pemasaran yaitu strategi pemasaran, bauran pemasaran dan analisis SWOT. Dan menjadi upaya dalam menciptakan minat bagi anak muda agar dapat menjadi wirausaha berskala UMKM guna meningkatkan kualitas diri dan pertumbuhan ekonomi negara. Kegiatan ini menggunakan metode pendidikan masyarakat dengan memberikan penyuluhan kepada siswa SMAN 2 Samarinda. Penyuluhan akan pengatahuan kewirausahaan baik dimulai sejak dini dan pada kelompok masyarakat yang memiliki potensi besar yaitu kelompok kalangan anak muda memiliki inovasi, kreativitas, ide-ide, dan semangat dalam mencapai hasil. Maka penting untuk memberikan pemahaman dasar dan mendalam mengenai bagaimana menjadi seorang pengusaha yang pintar guna memperkuat pondasi ide-ide anak muda dalam mewujudkan impian, kreativitas serta inovasi bisnis yang berpeluang besar. Kegiatan sosialisasi ini penting untuk menumbuhkan minat kalangan muda khususnya siswa sekolah menengah atas untuk menjadi seorang pengusaha. Dengan kegiatan sosialisasi ini diharapkan dapat membantu mereka mengimplementasikan ide, kreativitas, dan inovasi dalam membentuk suatu bisnis dan dapat mensejahterakan individu maupun masyarakat di masa depan serta menjadi agen perubahan yang ikut andil dalam perekonomian negara.