A5047305468- Advanced Radiotherapy Techniques
- Hepatocellular Carcinoma Treatment and Prognosis
- Head and Neck Cancer Studies
- Medical Imaging Techniques and Applications
- Radiation Therapy and Dosimetry
- Lung Cancer Diagnosis and Treatment
- Management of metastatic bone disease
- Prostate Cancer Diagnosis and Treatment
- Prostate Cancer Treatment and Research
- Colorectal and Anal Carcinomas
- Cholangiocarcinoma and Gallbladder Cancer Studies
- Radiomics and Machine Learning in Medical Imaging
- Glioma Diagnosis and Treatment
- Radiation Dose and Imaging
- Esophageal Cancer Research and Treatment
- Ear and Head Tumors
- Salivary Gland Tumors Diagnosis and Treatment
- Advanced X-ray and CT Imaging
- Head and Neck Surgical Oncology
- Inflammatory Biomarkers in Disease Prognosis
- Cancer Immunotherapy and Biomarkers
- Ultrasound Imaging and Elastography
- Breast Cancer Treatment Studies
- Lung Cancer Research Studies
- Gallbladder and Bile Duct Disorders
Soonchunhyang University
2008-2024
Soonchunhyang University Hospital
2015-2024
Ewha Womans University
2022
University of California, San Francisco
2017
Seoul National University
2005-2012
National University Hospital
2012
McGill University
2008
University of Illinois Urbana-Champaign
2007
Harvard University
2002
VA Boston Healthcare System
2002
Background Although several prospective studies have reported the efficacy of stereotactic body radiotherapy (SBRT) for hepatocellular carcinoma (HCC), treatment‐related toxicity varies and has not been determined. Therefore, authors evaluated safety SBRT patients with HCC in a hepatitis B virus‐endemic area. Methods This multicenter phase 2 trial enrolled unresectable HCC. Patients received 45 to 60 Gy 3 fractions. To evaluate gastroduodenal toxicity, esophagogastroduodenoscopy (EGD) was...
Objective: To evaluate the safety and technical success rate of an ultrasound-guided fiducial marker implantation in preparation for CyberKnife radiation therapy. Materials Methods:We retrospectively reviewed 270 percutaneous implantations 77 patients, which were performed from June 2008 through March 2011.Of implantations, 104 implanted metastatic lymph nodes, 96 liver, 39 pancreas, 31 prostate.During after implantation, major minor procedure-related complications documented.We defined as...
Abstract Background To evaluate the prognostic value of expressions epidermal growth factor receptor (EGFR) and cyclin D1 in early glottic cancer treated with radiotherapy only. Methods One hundred fifty‐one patients T1‐2, N0 who had been at Seoul National University Hospital since 1992 through 2004. Immunohistochemical staining for EGFR were performed on formalin‐fixed paraffin‐embedded tissues 25 developed local recurrence matched free from disease. Patterns degrees expression compared...
The purpose of this study was to evaluate local control and survival in patients with spinal metastases who were treated stereotactic body radiotherapy (SBRT) using a CyberKnife, or without prior history irradiation, identify prognostic factors predicting them. Between August 2008 November 2012, 59 metastatic lesions 39 SBRT. Fourteen (23.7%) re-irradiated treat recurrence after radiotherapy. Patients median radiation dose 27 Gy (range, 18-35 Gy) three fractions one five) the CyberKnife...
To evaluate the treatment outcome and prostate-specific antigen (PSA) change after stereotactic body radiotherapy (SBRT) for localized prostate cancer. Patients with cancer treated SBRT at three academic hospitals were enrolled. Treatment was delivered using Cyberknife dose range from 35 to 37.5 Gy in 5 fractions. Biochemical failure (BCF) assessed Phoenix definition toxicities scored Radiation Therapy Oncology Group (RTOG) toxicity criteria. The PSA kinetics analyzed patients who received...
This study aims to evaluate the treatment approaches and locoregional patterns for Adenoid cystic carcinoma (ACC) in breast, which is an uncommon malignant tumor with limited clinical data.
The purpose of this study is to investigate the current status stereotactic body radiotherapy (SBRT) in Korea. A nationwide survey was conducted by Korean Stereotactic Radiosurgery Group Society for Radiation Oncology (KROG 13-13). SBRT defined as with delivery a high dose radiation an extracranial lesion ≤ 4 fractions. 16-questionnaire sent e-mail chief oncology at 85 institutions June 2013. All (100%) responded survey. Of these, 38 (45%) have used and 47 (55%) not SBRT. Regarding treatment...
Stereotactic Ablative Radiotherapy (SABR) is an effective treatment that improves local control for many tumours. However, the role of SABR in gynecological cancers (GYN) has not been well-established. We hypothesize there exists considerable variation GYN-SABR practice and technique. The goal this study to describe clinical technical factors utilization among 11 experienced radiation oncologists.A 63 question survey on was sent oncologists (5 countries) who have published original research,...
PurposeTo quantify interobserver variation (IOV) in target volume and organs-at-risk (OAR) contouring across 31 institutions breast cancer cases to explore the clinical utility of deep learning (DL)-based auto-contouring reducing potential IOV.Methods materialsIn phase 1, two were randomly selected distributed multiple for six volumes (CTVs) eight OAR. In Phase 2, auto-contour sets generated using a previously published DL Breast segmentation model made available all participants. The...
Abstract Background To investigate the effect of computed tomography (CT) contrast enhancement (CE) on 3D dose distributions non-coplanar small field beams in CyberKnife (CK) treatment planning system (TPS) for stereotactic ablative radiotherapy (SABR). Methods Twenty-two pre-CE CT plans were recruited to this retrospective plan study. Their post-CE based data and calculated using same MU beam paths either Ray-Tracing or Monte Carlo (MC) algorithms. The differences doses path reference point...
To evaluate the incidence of chest wall toxicity after lung stereotactic ablative radiotherapy (SABR) and identify risk factors for development rib fracture. Thirty-nine patients with 49 lesions underwent SABR primary or metastatic tumors using Cyberknife® tumor tracking systems. Patient characteristics, treatment variables obtained from dose-volume histograms (DVHs) were analyzed to find association toxicity. Four-dimensional (4D) dose calculations done investigate effect respiratory motion...
Background/Aim: To validate the effect of treatment intensification on survival in esophageal squamous cell carcinoma (ESCC) patients undergoing definitive concurrent chemoradiotherapy (dCCRT). Patients and Methods: We reviewed medical records 73 ESCC who underwent dCCRT between 2006 2017 3 institutions. Results: The median follow-up time was 13.3 months. overall (OS) locoregional recurrence-free (LRFS) were 11.2 months, respectively. radiotherapy dose 55.8 Gy, biologically effective (BED)...
The purpose of this study was to describe treatment patterns radiotherapy (RT) for prostate cancer in Korea.A questionnaire about radiation technique and principles 2013 sent 83 oncologists data from 57 hospitals were collected analyzed find RT patients Korea.The number with treated definitive ranged 1 72 per hospital 2013. doses target volumes increased according risk groups but the range wide (60 81.4 Gy) fraction size diverse (1.8 5 Gy). Intensity-modulated therapy used 93.8% hospitals....
To investigate practical patterns for stereotactic body radiotherapy to hepatocellular carcinoma in Korea. In June 2013, the Korean Stereotactic Radiosurgery Group of Society Radiation Oncology conducted a national patterns-of-care survey about liver lesion carcinoma, consisting 19 questions and 2 clinical scenarios. All 208 radiation oncologists (100%), who are regular members Oncology, responded this survey. Among these, 95 were specialists hepatology; 64 physicians did not use 31 used...
Background/Aim: Lymphocyte-to-monocyte ratio, neutrophil-to-lymphocyte and platelet-to-lymphocyte ratio represent systemic immune-inflammatory responses. We evaluated the association between cell ratios prognosis in esophageal squamous carcinoma (ESCC) patients who underwent definitive concurrent chemoradiotherapy (dCCRT). Patients Methods: Medical records of 68 ESCC three institutions dCCRT 2006 2017 were reviewed. The calculated before after dCCRT. Results: median follow-up time was 11.4...
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