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Trend Analysis on Korean and International Management for Activated Material Waste from Medical Linear Accelerator

Kwon NH, Jang YJ, Kim DW, Shin DO, Kim KB, Kim JS, Choi SH

This study investigated and analyzed the Korean and international status of radioactive waste management for medical linear accelerators (linacs) and proceed prior research to suggest radiation safety regulations and guidelines...
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Characteristics of Magnetic Resonance-Based Attenuation Correction Map on Phantom Study in Positron Emission Tomography/Magnetic Resonance Imaging System

Hong C

An MR-based attenuation correction (MRAC) map plays an important role in quantitative positron emission tomography (PET) image evaluation in PET/magnetic resonance imaging (MRI) systems.However, the MRAC map is affected by...
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Dosimetric Comparison of Noncoplanar and Coplanar Volumetric Modulated Arc Therapy Plans for Esophageal Cancer

Park SY

Purpose: We compared noncoplanar volumetric modulated arc therapy (ncVMAT) plans to coplanar VMAT (cVMAT) plans by evaluating the dosimetric quality of each for esophageal cancer. Methods: Twenty patients treated for esophageal...
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Structure of an Oncology Information System Based on a Cost-Effective Relational Database for Small Departments of Radiation Oncology

Jeon H, Kim DW, Joo JH, Ki Y, Kim W, Park D, Nam J, Kim DH

Purpose: Radiation oncology information systems (ROIS) have evolved toward connecting and integrating information between radiation treatment procedures. ROIS can play an important role in utilizing modern radiotherapy techniques that have...
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Improvement of Calculation Accuracy in the Electron Monte Carlo Algorithm with Optional Air Profile Measurements

Sung J, Jin H, Kim J, Park JM, Kim Ji, Choi CH, Chun M

Purpose: In this study, the accuracies of electron Monte Carlo (eMC) calculation algorithms were evaluated to determine whether electron beams were modeled by optional air profiles (APs) designed for each...
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Dosimetric Evaluation of an Automatically Converted Radiation Therapy Plan between Radixact Machines

Lee MY, Kang DG, Kim JS

Purpose: We aim to evaluate the accuracy and effectiveness of an automatically converted radia tion therapy plan between Radixact machines by comparing the original plan with the transferred plan. Methods: The...
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High-Dose-Rate Electron-Beam Dosimetry Using an Advanced Markus Chamber with Improved IonRecombination Corrections

Jeong DH, Lee M, Lim H, Kang SK, Jang KW

Purpose: In ionization-chamber dosimetry for high-dose-rate electron beams一above 20 mGy/pulse一the ion-recombination correction methods recommended by the International Atomic Energy Agency (IAEA) and the American Association of Physicists in Medicine (AAPM)...
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Linear Energy Transfer Dependence Correction of Spread-Out Bragg Peak Measured by EBT3 Film for Dynamically Scanned Proton Beams

Lee M, Ahn S, Cheon W, Han Y

Purpose: Gafchromic films for proton dosimetry are dependent on linear energy transfers (LETs), resulting in dose underestimation for high LETs. Despite efforts to resolve this problem for singleenergy beams, there...
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