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Investigation of the Clinical Potential of Polarization-Sensitive Optical Coherence Tomography in a Laryngeal Tumor Model

Xin Z, Kim SW, Oak C, Kwon DY, Choi JH, Ko TY, Kim JH, Tang S, Ahn YC

BACKGROUND: The vocal cord tissue consists of three anatomical layers from the surface to deep inside: the epithelium that contains almost no collagen, the lamina propria that is composed of...
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Application of Polarization Sensitive-Optical Coherence Tomography to the Assessment of Phase Retardation in Subpleural Cancer in Rabbits

Park JE, Xin Z, Kwon DY, Kim SW, Lee H, Jung MJ, Tang S, Ko TY, Choi JH, Kim JH, Ahn YC, Oak C

BACKGROUND: Polarization sensitive-optical coherence tomography (PS-OCT) provides the unique advantage of being able to measure the optical characteristics of tissues by using polarized light. Although the well-organized fibers of healthy...
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Current status and comparison of national health insurance systems for advanced radiation technologies in Korea and Japan

Huh SJ, Nishimura T, Park W, Onishi H, Ahn YC, Nakamura K

Purpose: This study aimed to compare the current status of the national health insurance system (HIS) for advanced radiation technologies in Korea and Japan. Materials and methods: The data of the...
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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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Higher thoracic radiation dose is beneficial in patients with extensive small cell lung cancer

Yoon HG, Noh JM, Ahn YC, Oh D, Pyo H, Kim H

PURPOSE: The effectiveness of thoracic radiation therapy (TRT) in extensive-stage small cell lung cancer (ES-SCLC) patients is increasingly reported, but there is no definite consensus on its application. The aim...
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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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Dummy Run of Quality Assurance Program before Prospective Study of Hippocampus-Sparing Whole-Brain Radiotherapy and Simultaneous Integrated Boost for Multiple Brain Metastases from Non-small Cell Lung Cancer: Korean Radiation Oncology Group (KROG) 17-06 Study

Chung E, Noh JM, Lee KC, Kim JH, Chung WK, Suh YG, Lee JA, Seol KH, Wu HG, Kim YS, Noh OK, Park JW, Lee DS, Lee J, Kim YS, Park WY, Kang MK, Jo S, Ahn YC

PURPOSE: Lung Cancer Subcommittee of Korean Radiation Oncology Group (KROG) has recently launched a prospective clinical trial (KROG 17-06) of hippocampus-sparing whole brain radiotherapy (HS-WBRT) with simultaneous integrated boost (SIB)...
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Less is more: role of additional chemotherapy to concurrent chemoradiotherapy in locoregionally advanced nasopharyngeal cancer management

Ahn YC

Concurrent chemoradiation therapy (CCRT) has played the most important and central role in the definitive therapy for the patients with locoregionally advanced stage nasopharynx cancer. The addition of induction chemotherapy...
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Salvage Concurrent Chemo-radiation Therapy for Loco-regional Recurrence Following Curative Surgery of Non-small Cell Lung Cancer

Lee KH, Ahn YC, Pyo H, Noh JM, Park SG, Kim TG, Lee E, Nam H, Lee H, Sun JM, Ahn JS, Ahn MJ, Park K

PURPOSE: This study is to report clinical outcomes of salvage concurrent chemo-radiation therapy (CCRT) in treating patients with loco-regional recurrence (LRR) following initial complete resection of non-small cell lung cancer. MATERIALS...
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Feasibility of Selective Neck Irradiation with Lower Elective Radiation Dose in Treating Nasopharynx Cancer Patients

Cho WK, Oh D, Lee E, Kim TG, Lee H, Nam H, Noh JM, Ahn YC

PURPOSE: This study aimed to report the clinical outcomes following selective neck irradiation (SNI) with lower elective radiation therapy (RT) dose in treating nasopharyngeal cancer (NPC) patients. MATERIALS AND METHODS: A...
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Radiation Therapy Outcome and Clinical Features of Duodenal-Type Follicular Lymphoma

Lee H, Oh D, Yang K, Ko YH, Ahn YC, Kim WS, Kim SJ

PURPOSE: Duodenal-type follicular lymphoma (FL) is a rare variant of FL. There is still no consensus on the initial treatment, and clinical features including endoscopic findings are not familiar to...
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EGFR Mutation Is Associated with Short Progression-Free Survival in Patients with Stage III Non-squamous Cell Lung Cancer Treated with Concurrent Chemoradiotherapy

Park SE, Noh JM, Kim YJ, Lee HS, Cho JH, Lim SW, Ahn YC, Pyo H, Choi YL, Han J, Sun JM, Lee SH, Ahn JS, Park K, Ahn MJ

PURPOSE: This study was conducted to evaluate the relationship between epidermal growth factor receptor (EGFR) mutation and clinical outcomes in patients with stage III non-squamous cell lung cancer treated with...
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The Effect of Hospital Case Volume on Clinical Outcomes in Patients with Nasopharyngeal Carcinoma: A Multi-institutional Retrospective Analysis (KROG-1106)

Ha B, Cho KH, Moon SH, Lee CG, Keum KC, Kim YS, Wu HG, Kim JH, Ahn YC, Oh D, Noh JM, Lee JH, Kim SH, Kim WT, Oh YT, Kang MK, Kim JH, Kim JY, Cho MJ, Kay CS, Choi JH

PURPOSE: The purpose of this study was to investigate the effect of hospital case volume on clinical outcomes in patients with nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS: Data on 1,073 patients...
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Low-Dose Radiation Therapy for Primary Conjunctival Marginal Zone B-Cell Lymphoma

Lee GI, Oh D, Kim WS, Kim SJ, Ko YH, Woo KI, Kim YD, Ahn YC

PURPOSE: The purpose of this study was to evaluate the clinical features and the long-term outcomes of primary conjunctival marginal zone B-cell lymphoma (MZBCL) patients who were treated with radiation...
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Survey of the Patterns of Using Stereotactic Ablative Radiotherapy for Early-Stage Non-small Cell Lung Cancer in Korea

Song S, Chang JH, Kim HJ, Kim YS, Kim JH, Ahn YC, Kim JS, Song SY, Moon SH, Cho MJ, Youn SM

PURPOSE: Stereotactic ablative radiotherapy (SABR) is an effective emerging technique for early-stage non-small cell lung cancer (NSCLC). We investigated the current practice of SABR for early-stage NSCLC in Korea. MATERIALS AND...
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Comparison of the Clinical Outcomes of Patients with Squamous Cell Carcinoma of the Tonsil Receiving Postoperative Ipsilateral Versus Bilateral Neck Radiotherapy: A Propensity Score Matching Analysis (KROG 11-07)

Kim Y, Cho KH, Moon SH, Lee CG, Keum KC, Lee SW, Ahn YC, Oh D, Kim YS, Won YK, Wu HG, Hah JH, Oh YT

PURPOSE: The impact of postoperative ipsilateral neck radiotherapy (INRT) versus bilateral neck radiotherapy (BNRT) on the clinical outcomes of patients with tonsillar squamous cell carcinoma was analyzed retrospectively. MATERIALS AND METHODS:...
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Role of Adjuvant Thoracic Radiation Therapy and Full Dose Chemotherapy in pN2 Non-small Cell Lung Cancer: Elucidation Based on Single Institute Experience

Park H, Oh D, Ahn YC, Pyo H, Noh JM, Sun JM, Ahn JS, Ahn MJ, Park K, Kim HK, Choi YS, Kim J, Zo JI, Shim YM

PURPOSE: The optimal adjuvant therapy modality for treating pN2 non-small cell lung cancer patients has not yet been established. In this study, the authors investigated clinical outcomes following three different...
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Variation in Practice Patterns of Korean Radiation Oncologists for Spine Metastasis between 2009 and 2014

Yu JI, Park HC, Ahn YC, Chung Y, Koom WS, Song SY

PURPOSE: The Korean Society of Radiation Oncologists (KOSRO) conducted the Patterns of Care Study (PCS) of radiotherapy (RT) for spine metastases in 2009. The current study was conducted to investigate...
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The Role of Neoadjuvant Chemotherapy in the Treatment of Nasopharyngeal Carcinoma: A Multi-institutional Retrospective Study (KROG 11-06) Using Propensity Score Matching Analysis

Song JH, Wu HG, Keam BS, Hah JH, Ahn YC, Oh D, Noh JM, Park HJ, Lee CG, Keum KC, Cha J, Cho KH, Moon SH, Kim JY, Chung WK, Oh YT, Kim WT, Cho MJ, Kay CS, Kim YS

PURPOSE: We compared the treatment results and toxicity in nasopharyngeal carcinoma (NPC) patients treated with concurrent chemotherapy (CCRT) alone (the CRT arm) or neoadjuvant chemotherapy followed by CCRT (the NCT...
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Avoiding student infection during a Middle East respiratory syndrome (MERS) outbreak: a single medical school experience

Park SW, Jang HW, Choe YH, Lee KS, Ahn YC, Chung MJ, Lee KS, Lee K, Han T

PURPOSE: In outbreaks of infectious disease, medical students are easily overlooked in the management of healthcare personnel protection although they serve in clinical clerkships in hospitals. In the early summer...
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