Search Results - "Lee, Choonik"
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Early HPV ctDNA Kinetics and Imaging Biomarkers Predict Therapeutic Response in p16+ Oropharyngeal Squamous Cell Carcinoma
Published in Clinical cancer research (15-01-2022)“…In locally advanced p16+ oropharyngeal squamous cell carcinoma (OPSCC), (i) to investigate kinetics of human papillomavirus (HPV) circulating tumor DNA (ctDNA)…”
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Assessment of Parotid Gland Dose Changes During Head and Neck Cancer Radiotherapy Using Daily Megavoltage Computed Tomography and Deformable Image Registration
Published in International journal of radiation oncology, biology, physics (01-08-2008)“…Purpose To analyze changes in parotid gland dose resulting from anatomic changes throughout a course of radiotherapy in a cohort of head-and-neck cancer…”
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3
Hybrid computational phantoms of the male and female newborn patient: NURBS-based whole-body models
Published in Physics in medicine & biology (21-06-2007)“…Anthropomorphic computational phantoms are computer models of the human body for use in the evaluation of dose distributions resulting from either internal or…”
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A deep learning segmentation method to assess dose to organs at risk during breast radiotherapy
Published in Physics and imaging in radiation oncology (01-10-2023)“…Contouring of organs at risk is important for studying health effects following breast radiotherapy. However, manual contouring is time-consuming and subject…”
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Predictive Values of MRI and PET Derived Quantitative Parameters for Patterns of Failure in Both p16+ and p16- High Risk Head and Neck Cancer
Published in Frontiers in oncology (14-11-2019)“…FDG-PET adds to clinical factors, such tumor stage and p16 status, in predicting local (LF), regional (RF), and distant failure (DF) in poor prognosis locally…”
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Organ dose conversion coefficients in CT scans for Korean adult males and females
Published in Nuclear engineering and technology (01-02-2022)“…Dose monitoring in CT patients requires accurate dose estimation but most of the CT dose calculation tools are based on Caucasian computational phantoms. We…”
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Automatic segmentation of cardiac structures for breast cancer radiotherapy
Published in Physics and imaging in radiation oncology (01-10-2019)“…•We developed an automatic method to segment cardiac sub-structures for radiotherapy planning CTs.•The Dice Similarity Coefficients and Average Surface…”
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Methods for Reducing Normal Tissue Complication Probabilities in Oropharyngeal Cancer: Dose Reduction or Planning Target Volume Elimination
Published in International journal of radiation oncology, biology, physics (01-11-2016)“…Purpose Strategies to reduce the toxicities of head and neck radiation (ie, dysphagia [difficulty swallowing] and xerostomia [dry mouth]) are currently…”
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9
Evaluation of Image-Guidance Strategies in the Treatment of Localized Prostate Cancer
Published in International journal of radiation oncology, biology, physics (15-03-2008)“…Purpose To compare different image-guidance strategies in the alignment of prostate cancer patients. Using data from patients treated using daily image…”
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10
Application of an automatic segmentation method for evaluating cardiac structure doses received by breast radiotherapy patients
Published in Physics and imaging in radiation oncology (01-07-2021)“…•Atlas-based method for contouring heart substructures on breast radiotherapy CT.•Excellent agreement between automatic and manual contours for most…”
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Evaluation of geometric changes of parotid glands during head and neck cancer radiotherapy using daily MVCT and automatic deformable registration
Published in Radiotherapy and oncology (01-10-2008)“…Abstract Background and purpose To assess and evaluate geometrical changes in parotid glands using deformable image registration and megavoltage CT (MVCT)…”
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12
Validation and Comparison of Radiograph-Based Organ Dose Reconstruction Approaches for Wilms Tumor Radiation Treatment Plans
Published in Advances in radiation oncology (01-11-2022)“…Our purpose was to validate and compare the performance of 4 organ dose reconstruction approaches for historical radiation treatment planning based on…”
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13
Organ dose conversion coefficients in CT scans for Korean adult males and females
Published in Nuclear engineering and technology (2022)“…Dose monitoring in CT patients requires accurate dose estimation but most of the CT dose calculation tools are based on Caucasian computational phantoms. We…”
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14
Development and Clinical Implementation of an Automated Virtual Integrative Planner for Radiation Therapy of Head and Neck Cancer
Published in Advances in radiation oncology (01-03-2023)“…Head and neck (HN) radiation (RT) treatment planning is complex and resource intensive. Deviations and inconsistent plan quality significantly affect clinical…”
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15
Organ and effective doses in pediatric patients undergoing helical multislice computed tomography examination
Published in Medical physics (Lancaster) (01-05-2007)“…As multidetector computed tomography (CT) serves as an increasingly frequent diagnostic modality, radiation risks to patients became a greater concern,…”
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Korean adult male voxel model KORMAN segmented from magnetic resonance images
Published in Medical physics (Lancaster) (01-05-2004)“…A voxel model of Korean adult male, KORMAN, was developed by processing whole-body magnetic resonance (MR) images of a healthy volunteer who represents an…”
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A Comparison of Soft-Tissue Implanted Markers and Bony Anatomy Alignments for Image-Guided Treatments of Head-and-Neck Cancers
Published in International journal of radiation oncology, biology, physics (01-03-2010)“…Purpose To compare the geometric alignments of soft-tissue implanted markers to the traditional bony-based alignments in head-and-neck cancers, on the basis of…”
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18
Development of a Comprehensive, Brachytherapy Audit Checklist
Published in Brachytherapy (01-05-2015)Get full text
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A dose voxel kernel method for rapid reconstruction of out-of-field neutron dose of patients in pencil beam scanning (PBS) proton therapy
Published in Physics in medicine & biology (27-08-2020)“…Monte Carlo (MC) radiation transport methods are used for dose calculation as 'gold standard.' However, the method is computationally time-consuming and thus…”
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Realistic extension of partial-body pediatric CT for whole-body organ dose estimation in radiotherapy patients
Published in Radiation physics and chemistry (Oxford, England : 1993) (01-01-2025)“…While modern radiotherapy treatments can deliver a localized radiation dose to the tumor, healthy tissues at distance are inevitably exposed to scatter…”
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