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Analysis of Small-Field Dosimetry with Various Detectors

Park SY, Choi BG, Lee DM, Jang NY

We evaluated the performance of various detectors for small-field dosimetry with field sizes defined by a high-definition (HD) multileaf collimator (MLC) system. For small-field dosimetry, diodes referred to as “RAZOR...
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Dosimetric Evaluation of Plans Converted with the DVH-Based Plan Converter

Chun M, Choi CH, Kim JI, Yoon J, Lee SY, Kwon O, Son J, An HJ, Kang SH, Park JM

Plans converted using dose-volume-histogram-based plan conversion (DPC) were evaluated by comparing them to the original plans. Changes in the dose volumetric (DV) parameters of five volumetric modulated arc therapy (VMAT)...
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Anisotropic Total Variation Denoising Technique for Low-Dose Cone-Beam Computed Tomography Imaging

Lee H, Yoon J, Lee E

This study aims to develop an improved Feldkamp-Davis-Kress (FDK) reconstruction algorithm using anisotropic total variation (ATV) minimization to enhance the image quality of low-dose cone-beam computed tomography (CBCT). The algorithm...
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Feasibility Assessment of Physical Factors of Rectal Cancer Short-Course Chemoradiotherapy with Delayed Surgery

Koo J, Chung M, Chung WK, Jin S, Kim DW

To verify the correlations between the clinical outcomes and physical factors of short-course chemoradiotherapy (SCRT) and long-course chemoradiotherapy (LCRT) with delayed surgery in patients with rectal cancer. Seventy-two patients with...
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Verification of Extended Source-To-Imager Distance (SID) Correction for Portal Dosimetry

Son J, Kim JI, Park JM, Choi CH

This study aimed to evaluate and verify a process for correcting the extended source-to-imager distance (SID) in portal dosimetry (PD). In this study, eight treatment plans (four volumetric modulated arc...
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Guideline on Acceptance Test and Commissioning of High-Precision External Radiation Therapy Equipment

Kim J, Shin DO, Choi SH, Min S, Kwon N, Jung U, Kim DW

The complex dose distribution and dose transfer characteristics of intensity-modulated radiotherapy increase the importance of precise beam data measurement and review in the acceptance inspection and preparation stages. In this...
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On the Use Factor Analysis and Adequacy Evaluation of CyberKnife Shielding Design Using Clinical Data

Cho YR, Jung H, Lee DH

Although the current internationally recommended standard for the use factor (U) applied to CyberKnife is 0.05 (5%), the CyberKnife shielding standard is applied more stringently. This study, based on clinical...
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Dosimetric and Radiobiological Evaluation of Dose Volume Optimizer (DVO) and Progressive Resolution Optimizer (PRO) Algorithm against Photon Optimizer on IMRT and VMAT Plan for Prostate Cancer

Kim YL, Chung JB, Kang SH, Eom KY, Song C, Kim IA, Kim JS, Lee JW

This study aimed to compare the performance of previous optimization algorithms against new a photon optimizer (PO) algorithm for intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) plans...
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Assembly Neutron Moderation System for BNCT Based on a ²⁵²Cf Neutron Source

Gheisari R, Mohammadi

In this paper, a neutron moderation system for boron neutron capture therapy (BNCT) based on a ²⁵²Cf neutron source is proposed. Different materials have been studied in order to produce...
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