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Convolutional Neural Network Based Sinogram Extrapolation for Truncated CT: Preliminary Study

Park YI, Suh TS

  • KMID: 2510116
  • Prog Med Phys.
  • 2020 Sep;31(S1):S71.
Purpose: Evaluate the feasibility of the convolutional neural network based sinogram extrapolation method to extend the field-of-view in truncated computed tomography (CT). Methods: Initial sinogram datasets were collected using forward projections...
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Developmet of Infrared Marker for Thormoplastic Immobilization Tool

Kim YJ, Kim TH, Suh TS

  • KMID: 2510115
  • Prog Med Phys.
  • 2020 Sep;31(S1):S68.
Purpose: Although the thermoplastic immobilization tool is used to efficiently control of patient movement, movement of the patient’s skin surface under thermoplastic immobilization tool exists. In addition, the thermoplastic immobilization...
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Dosimetric Result of Magnetic Resonance/ Computed Tomography Compatible Hybrid Phantom for Magnetic Resonance Guided Radiotherapy

Kim MJ, Lee SR, Suh TS

  • KMID: 2510105
  • Prog Med Phys.
  • 2020 Sep;31(S1):S59.
Purpose: The purpose of the present study was to develop MR/CT compatible hybrid phantom and tissue-equivalent materials for each MR and CT image. Methods: The essential requirements necessary for the development...
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Monitoring Tumor Size Using PET with a Collimator during Boron Neutron Capture Therapy: Simulation Study

Yang HJ, Yoon DK, Suh TS

  • KMID: 2510100
  • Prog Med Phys.
  • 2020 Sep;31(S1):S55.
Purpose: The purpose of this study was to demonstrate the feasibility of sensing changes in a tumor during boron neutron capture therapy (BNCT) using a Monte Carlo simulation tool. Methods: In...
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Statistical Analysis for Determining Initial Electron Beam Parameters in a 6MV Linac: A Simulation Study

Yang HJ, Kim TH, Schaarschmidt T, Park DW, Chung HT, Suh TS

  • KMID: 2510098
  • Prog Med Phys.
  • 2020 Sep;31(S1):S54.
Purpose: The purpose of this study was to obtain the initial electron beam parameters of a medical linear accelerator (Linac) with Monte Carlo (MC) simulations using the Geant4 code. The...
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Simplified Sigmoidal Curve Fitting for 6 MV FFF Photon Beam of Halcyon to Determine Field Size for Beam Commissioning and Quality Assurance

Choi MG, Kim YJ, Yoon DK, Kim MS, Suh TS

  • KMID: 2510084
  • Prog Med Phys.
  • 2020 Sep;31(S1):S43.
Purpose: Delivery of a single energy 6 MV flattening filter free (FFF) photon beam is a main characteristic of an O-ring gantry type linear accelerator (linac) Halcyon. The purpose of...
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Development of Dosimetric Verification System for Patient-Specific Quality Assurance of High-Dose-Rate Brachytherapy

Kang SW, Chung JB, Kim KH, Choi CH, Kang S, Cho W, Park HJ, Suh TS

  • KMID: 2510074
  • Prog Med Phys.
  • 2020 Sep;31(S1):S30.
Purpose: Although high-dose-rate brachytherapy (HDR-BT) is an effective treatment for cancer, it has a high risk of error. The aim of this study was to develop a dosimetric verification system...
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Reference based Simulation Study of Detector Comparison for BNCT-SPECT Imaging

Kim MS, Choi MG, Yoon DK, Suh TS

  • KMID: 2510053
  • Prog Med Phys.
  • 2020 Sep;31(S1):S25.
To investigate the optimal detector material for prompt gamma imaging during boron neutron capture therapy, in this study, we evaluated the characteristic regarding radiation reaction of available detector materials using...
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Preliminary Study for Dose Super-Resolution in Volumetric Modulated Arc Therapy Using Cascaded Networks

Shin DS, Kim KH, Kang SW, Kang SH, Kim TH, Suh TS, Chung JB

  • KMID: 2510039
  • Prog Med Phys.
  • 2020 Sep;31(S1):S12.
Purpose: Dose grid size is one of factors that affect accuracy of dose calculation. Although use of a small grid can improve the accuracy, it is not typically used in...
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SPECT Image Analysis Using Computational ROC Curve Based on Threshold Setup

Kim MS, Shin HB, Kim S, Shim JG, Yoon DK, Suh TS

We proposed the objective ROC analysis method based on the setting of threshold value for evaluation of single photon emission computed tomography (SPECT) image. This proposed ROC analysis method uses...
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Evaluation of Dual-channel Compound Method for EBT3 Film Dosimetry

Kang SW, Chung JB, Kim KH, Eom KY, Song C, Lee JW, Cho W, Suh TS

This study assessed the feasibility of a dual-channel (DC) compound method for film dosimetry. The red channel (RC) is usually used to ensure dosimetric quality using a conventional fraction dose...
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Development of an Advanced Deformable Phantom to Analyze Dose Differences due to Respiratory Motion

Shin DS, Kang SH, Kim DS, Kim TH, Kim KH, Koo HJ, Cho MS, Ha JS, Yoon DK, Suh TS

The difference between three-dimensional (3D) and four-dimensional (4D) dose could be affected by factors such as tumor size and motion. To quantitatively analyze the effects of these factors, a phantom...
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Evaluating the Dosimetric Characteristics of Radiation Therapies according to Head Elevation Angle for Head and Neck Tumors

Cheon GS, Kang SH, Kim DS, Kim TH, Suh TS

Since the head and neck region is densely located with organs at risk (OAR), OAR-sparing is an important issue in the treatment of head and neck cancers. This study—in which...
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Conceptual Study of Brain Dedicated PET Improving Sensitivity

Shin HB, Choi Y, Huh Y, Jung JH, Suh TS

The purpose of this study is to propose a novel high sensitivity neuro-PET design. The improvement of sensitivity in neuro-PET is important because it can reduce scan time and/or radiation...
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Development Treatment Planning System Based on Monte-Carlo Simulation for Boron Neutron Capture Therapy

Kim MS, Kubo K, Monzen H, Yoon DK, Shin HB, Kim S, Suh TS

The purpose of this study is to develop the treatment planning system (TPS) based on Monte-Carlo simulation for BNCT. In this paper, we will propose a method for dose estimation...
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Evaluating Correlation between Geometrical Relationship and Dose Difference Caused by Respiratory Motion Using Statistical Analysis

Shin DS, Kang SH, Kim DS, Kim TH, Kim KH, Cho MS, Noh YY, Yoon DK, Suh TS

Dose differences between three-dimensional (3D) and four-dimensional (4D) doses could be varied according to the geometrical relationship between a planning target volume (PTV) and an organ at risk (OAR). The...
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Customized 3D Printed Bolus for Breast Reconstruction for Modified Radical Mastectomy (MRM)

Ha JS, Jung JH, Kim MJ, Jeon MJ, Jang WS, Cho YJ, Lee IJ, Kim JW, Suh TS

We aim to develop the breast bolus by using a 3D printer to minimize the air-gap, and compare it to commercial bolus used for patients undergoing reconstruction in breast cancer....
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Comparison of Dosimetric Performance among Commercial Quality Assurance Systems for Verifying Pretreatment Plans of Stereotactic Body Radiotherapy Using Flattening-Filter-Free Beams

Chung JB, Kang SW, Eom KY, Song C, Choi KS, Suh TS

The purpose of this study was to compare the performance of different commercial quality assurance (QA) systems for the pretreatment verification plan of stereotactic body radiotherapy (SBRT) with volumetric arc...
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Carotid-Sparing TomoHelical 3-Dimensional Conformal Radiotherapy for Early Glottic Cancer

Hong CS, Oh D, Ju SG, Ahn YC, Noh JM, Chung K, Kim JS, Suh TS

PURPOSE: The purpose of this study was to investigate the dosimetric benefits and treatment efficiency of carotid-sparing TomoHelical 3-dimensional conformal radiotherapy (TH-3DCRT) for early glottic cancer. MATERIALS AND METHODS: Ten early-stage...
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Study of Motion-induced Dose Error Caused by Irregular Tumor Motion in Helical Tomotherapy

Cho MS, Kim TH, Kang SH, Kim DS, Kim KH, Cheon GS, Suh TS

The purpose of this study is to analyze motion-induced dose error generated by each tumor motion parameters of irregular tumor motion in helical tomotherapy. To understand the effect of the...
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