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Predicting Dose-Volume Histograms for Organ at Risks Using Machine Learning in Head and Neck Tomotherapy

Kim Yb, Ju SG, Ahn YC, Cho BH, Kim Y

  • KMID: 2510112
  • Prog Med Phys.
  • 2020 Sep;31(S1):S63.
Purpose: Dose prediction models for organ at risks (OARs) were developed and validated for head and neck (H&N) Tomotherapy. Methods: 58 Tomotherapy plans for nasopharyngeal cancer (NPC) patients were employed in...
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Dosimetric Effects of Intrafractional Organ Motion in Field-in-Field Technique for Whole-Breast Irradiation

Hong CS, Ju SG, Choi DH, Han Y, Huh SJ, Park W, Ahn YC, Kim JS, Lim DH

PURPOSE: We evaluated the motion-induced dosimetric effects on the field-in-field (FIF) technique for whole-breast irradiation (WBI) using actual patient organ motion data obtained from cine electronic portal imaging device (cine...
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Efficacy and Accuracy of Patient Specific Customize Bolus Using a 3-Dimensional Printer for Electron Beam Therapy

Choi WK, Chun JC, Ju SG, Min BJ, Park SY, Nam HR, Hong CS, Kim M, Koo BY, Lim DH

We develop a manufacture procedure for the production of a patient specific customized bolus (PSCB) using a 3D printer (3DP). The dosimetric accuracy of the 3D-PSCB is evaluated for electron...
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Effect of Radiation Therapy Techniques on Outcome in N3-positive IIIB Non-small Cell Lung Cancer Treated with Concurrent Chemoradiotherapy

Noh JM, Kim JM, Ahn YC, Pyo H, Kim B, Oh D, Ju SG, Kim JS, Shin JS, Hong CS, Park H, Lee E

PURPOSE: This study was conducted to evaluate clinical outcomes following definitive concurrent chemoradiotherapy (CCRT) for patients with N3-positive stage IIIB (N3-IIIB) non-small cell lung cancer (NSCLC), with a focus on...
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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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The first private-hospital based proton therapy center in Korea; status of the Proton Therapy Center at Samsung Medical Center

Chung K, Han Y, Kim J, Ahn SH, Ju SG, Jung SH, Chung Y, Cho S, Jo K, Shin EH, Hong CS, Shin JS, Park S, Kim DH, Kim HY, Lee B, Shibagaki , Nonaka H, Sasai K, Koyabu Y, Choi C, Huh SJ, Ahn YC, Pyo HR, Lim DH, Park HC, Park W, Oh DR, Noh JM, Yu JI, Song S, Lee JE, Lee B, Choi DH

PURPOSE: The purpose of this report is to describe the proton therapy system at Samsung Medical Center (SMC-PTS) including the proton beam generator, irradiation system, patient positioning system, patient position...
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Comparison of Intensity-modulated Radiation Therapy (IMRT), Uniform Scanning Proton Therapy (USPT), and Intensity-modulated Proton Therapy (IMPT) for Prostate Cancer: A Treatment Planning Study

Son K, Cho S, Kim JS, Han Y, Ju SG, Ahn SH, Shin E, Shin JS, Park W, Pyo H, Choi DH

This study assessed compared photon and proton treatment techniques, such as intensity modulated radiation therapy (IMRT), uniform scanning proton therapy (USPT), and intensity modulated proton therapy (IMPT), for a total...
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Development of Video Image-Guided Setup (VIGS) System for Tomotherapy: Preliminary Study

Kim JS, Ju SG, Hong CS, Jeon J, Son K, Shin JS, Shin E, Ahn SH, Han Y, Choi DH

  • KMID: 2315749
  • Prog Med Phys.
  • 2013 Jun;24(2):85-91.
At present, megavoltage computed tomography (MVCT) is the only method used to correct the position of tomotherapy patients. MVCT produces extra radiation, in addition to the radiation used for treatment,...
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Radiation sigmoiditis mimicking sigmoid colon cancer after radiation therapy for cervical cancer: the implications of three-dimensional image-based brachytherapy planning

Lee H, Huh SJ, Oh D, Jeong BK, Ju SG

External-beam radiation therapy with intracavitary high-dose-rate brachytherapy is the standard treatment modality for advanced cervical cancer; however, late gastrointestinal complications are a major concern after radiotherapy. While radiation proctitis is...
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Development of an Offline Based Internal Organ Motion Verification System during Treatment Using Sequential Cine EPID Images

Ju SG, Hong CS, Huh W, Kim MK, Han Y, Shin E, Shin JS, Kim JS, Park HC, Ahn SH, Lim DH, Choi DH

  • KMID: 2425220
  • Korean J Med Phys.
  • 2012 Jun;23(2):91-98.
Verification of internal organ motion during treatment and its feedback is essential to accurate dose delivery to the moving target. We developed an offline based internal organ motion verification system...
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Development of Movement Analysis Program and Its Feasibility Test in Streotactic Body Radiation Threrapy

Shin E, Han Y, Park HC, Kim JS, Shin JS, Ju SG, Lee J, Ahn JH, Lee J, Choi DH

  • KMID: 2243874
  • Korean J Med Phys.
  • 2011 Sep;22(3):107-116.
Respiratory gated radiation therapy and stereotactic body radiation therapy require identical tumor motions during each treatment with the motion detected in treatment planning CT. Therefore, this study developed a tumor...
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Analysis of changes in dose distribution due to respiration during IMRT

Shin JS, Shin E, Han Y, Ju SG, Kim JS, Ahn SH, Kim TG, Jeong BK, Park HC, Ahn YC, Choi DH

PURPOSE: Intensity modulated radiation therapy (IMRT) is a high precision therapy technique that can achieve a conformal dose distribution on a given target. However, organ motion induced by respiration can...
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Evaluation of the Positional Uncertainty of a Liver Tumor using 4-Dimensional Computed Tomography and Gated Orthogonal Kilovolt Setup Images

Ju SG, Hong CS, Park HC, Ahn JH, Shin E, Shin JS, Kim JS, Han Y, Lim DH, Choi DH

PURPOSE: In order to evaluate the positional uncertainty of internal organs during radiation therapy for treatment of liver cancer, we measured differences in inter- and intra-fractional variation of the tumor...
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The Clinical Implementation of 2D Dose Distribution QA System for the Patient Specific Respiratory-gated Radiotherapy

Kim JS, Shin E, Shin JS, Ju SG, Han Y, Park HC, Choi DH

  • KMID: 2243931
  • Korean J Med Phys.
  • 2010 Jun;21(2):127-136.
Emerging technologies such as four-dimensional computed tomography (4D CT) is expected to allow clinicians to accurately model interfractional motion and to quantitatively estimate internal target volumes (ITVs) for radiation therapy...
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Digital Tomosynthesis for Patient Alignment System Using Half-fan Mode CBCT Projection Images

Park JC, Park SH, Kim JS, Han Y, Ju SG, Shin E, Shin JS, Park HC, Ahn YC, Song WY

  • KMID: 1460188
  • Korean J Med Phys.
  • 2010 Dec;21(4):360-366.
To generate on-board digital tomosynthesis (DTS) for three-dimensionalimage-guided radiation therapy (IGRT) as an alternative to conventional portal imaging or on-board cone-beam computed tomography (CBCT), two clinical cases (liver and bladder)...
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Comparison of the Efficacy of 2D Dosimetry Systems in the Pre-treatment Verification of IMRT

Hong CS, Lim J, Ju SG, Shin E, Han Y, Ahn YC

PURPOSE: To compare the accuracy and efficacy of EDR2 film, a 2D ionization chamber array (MatriXX) and an amorphous silicon electronic portal imaging device (EPID) in the pre-treatment QA of...
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Analysis of the Imaging Dose for IGRT/Gated Treatments

Shin JS, Han Y, Ju SG, Shin E, Hong CS, Ahn YC

PURPOSE: The introduction of image guided radiation therapy/four-dimensional radiation therapy (IGRT/4DRT) potentially increases the accumulated dose to patients from imaging and verification processes as compared to conventional practice. It is...
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A Dose Volume Histogram Analyzer Program for External Beam Radiotherapy

Kim JS, Yoon M, Park SY, Shin JS, Shin E, Ju SG, Han Y, Ahn YC

PURPOSE: To provide a simple research tool that may be used to analyze a dose volume histogram from different radiation therapy planning systems for NTCP (Normal Tissue Complication Probability), OED...
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Efficacy of a Respiratory Training System on the Regularity of Breathing

Shin E, Park HC, Han Y, Ju SG, Shin JS, Ahn YC

PURPOSE: In order to enhance the efficiency of respiratory gated 4-dimensional radiation therapy for more regular and stable respiratory period and amplitude, a respiration training system was designed, and its...
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A Pilot Study for the Remote Monitoring of IMRT Using a Head and Neck Phantom

Han Y, Shin EH, Lim C, Kang SK, Park SH, Lah JE, Suh TS, Yoon M, Lee SB, Ju SG, Ahn YC

  • KMID: 2198502
  • J Korean Soc Ther Radiol Oncol.
  • 2007 Dec;25(4):249-260.
PURPOSE: In order to enhance the quality of IMRT as employed in Korea, we developed a remote monitoring system. The feasibility of the system was evaluated by conducting a pilot...
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