Young Jun Choi

ORCID: 0000-0001-7098-5042
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About
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Research Areas
  • Thyroid Cancer Diagnosis and Treatment
  • Head and Neck Anomalies
  • Thyroid and Parathyroid Surgery
  • Radiomics and Machine Learning in Medical Imaging
  • Salivary Gland Tumors Diagnosis and Treatment
  • Head and Neck Cancer Studies
  • MRI in cancer diagnosis
  • Radiation Dose and Imaging
  • Total Knee Arthroplasty Outcomes
  • BRCA gene mutations in cancer
  • Neuroendocrine Tumor Research Advances
  • Orthopaedic implants and arthroplasty
  • Advanced MRI Techniques and Applications
  • Ultrasound and Hyperthermia Applications
  • Ultrasound Imaging and Elastography
  • Facial Nerve Paralysis Treatment and Research
  • Orthopedic Infections and Treatments
  • Global Cancer Incidence and Screening
  • Knee injuries and reconstruction techniques
  • Prostate Cancer Diagnosis and Treatment
  • Ovarian cancer diagnosis and treatment
  • Head and Neck Surgical Oncology
  • Medical Imaging Techniques and Applications
  • Meningioma and schwannoma management
  • Cancer Diagnosis and Treatment

University of Ulsan
2015-2024

Asan Medical Center
2015-2024

Ulsan College
2015-2024

Seoul St. Mary's Hospital
2016-2024

Catholic University of Korea
2016-2024

Research Institute of Radiology
2013-2024

Bank of Korea
2024

Yonsei University
2023-2024

LG (South Korea)
2024

Hanyang University
2003-2023

An initial clinical assessment is described of a new, commercially available, computer-aided diagnosis (CAD) system using artificial intelligence (AI) for thyroid ultrasound, and its performance evaluated in the malignant nodules categorization nodule characteristics.Patients with decisive diagnosis, whether benign or malignant, were consecutively enrolled from November 2015 to February 2016. experienced radiologist reviewed ultrasound image characteristics nodules, while another assessed...

10.1089/thy.2016.0372 article EN Thyroid 2017-01-10

Although ultrasonography (US) has an essential role in assessing the malignancy risk of thyroid nodules, a risk-stratification system not been established. The purpose this study was to develop clinically feasible US system--the Thyroid Imaging Reporting and Data System (TIRADS)--primarily based on solidity echogenicity nodules.From January 2010 May 2011, total consecutive 2000 nodules (≥ 1 cm) with final diagnoses were enrolled from database low high cancer volume institutions (1000 each...

10.1089/thy.2015.0460 article EN Thyroid 2016-01-12

Purpose To test the predictive value of skewness and kurtosis changes normalized cerebral blood volume (nCBV) during early treatment period for differentiating tumor progression from pseudoprogression in patients with newly diagnosed glioblastomas. Materials Methods The institutional review board approved this retrospective study. authors assessed 135 glioblastomas who underwent concurrent chemotherapy radiation therapy (CCRT) after surgical resection. Patients developed new or enlarged...

10.1148/radiol.12112120 article EN Radiology 2012-07-07

Pseudoprogression is a treatment-related reaction with an increase in contrast-enhancing lesion size, followed by subsequent improvement. Differentiating tumor recurrence from pseudoprogression remains problem neuro-oncology.To validate the added value of arterial spin labeling (ASL), compared dynamic susceptibility contrast (DSC) perfusion magnetic resonance imaging (MRI) alone, distinguishing early progression patients newly diagnosed glioblastoma multiforme (GBM).We retrospectively...

10.1177/0284185112474916 article EN Acta Radiologica 2013-04-22

Objective: To compare single-session radiofrequency ablation (RFA) and ethanol (EA) for treating predominantly cystic thyroid nodules (PCTNs).Materials Methods: This single-blind, randomized trial was approved by the Institutional Review Board of two centers informed consent obtained from all patients before enrollment.Fifty with a single PCTN (cystic portion less than 90% greater 50%) were randomly assigned to be treated either RFA (25 patients) or EA at hospitals.The primary outcome tumor...

10.3348/kjr.2015.16.6.1332 article EN Korean Journal of Radiology 2015-01-01

Purpose: To develop a semiautomated computer-aided diagnosis (cad) system for thyroid cancer using two-dimensional ultrasound images that can be used to yield second opinion in the clinic differentiate malignant and benign lesions. Methods: A total of 118 included axial longitudinal from patients with biopsy-confirmed (n = 30) 29) nodules were collected. Thyroid cad software was developed extract quantitative features these based on nodule segmentation which adaptive diffusion flow active...

10.1118/1.4939060 article EN Medical Physics 2016-01-06

Background The diagnostic performance and unnecessary biopsy rates for evaluation of thyroid nodules varies among the current society guidelines. We hypothesized that different guidelines are largely determined by size thresholds used as cutoff values determine when to a nodule. Purpose To compare malignancy risk, performance, three evaluate changes according nodule biopsy. Materials Methods This retrospective study included 3323 consecutive from 3190 patients between January 2013 December...

10.1148/radiol.2019181723 article EN Radiology 2019-02-19

Abstract Purpose To evaluate the usefulness of wash‐in rate based on dynamic contrast‐enhanced (DCE) MRI for detection and localization prostate cancer. Materials Methods In 53 patients, was measured in cancer area three normal areas (the peripheral zone, inner portion transitional outer zone). On basis these data, parametric imaging generated then its accuracy location evaluated compared to that T2‐weighted without use an endorectal coil. For purpose entire divided into 18 segments. Results...

10.1002/jmri.20431 article EN Journal of Magnetic Resonance Imaging 2005-09-30

The cytopathologic description of atypia undetermined significance (AUS)/follicular lesion (FLUS) includes nine different criteria in Bethesda System, and the risk malignancy this category shows a wide range. objectives present study were to determine whether ultrasound (US)-guided core-needle biopsy (CNB) indicates malignant risk, identify management recommendations, US findings, distribution CNB readings subcategories AUS/FLUS category, as seen on previous thyroid fine-needle aspiration...

10.1089/thy.2012.0635 article EN Thyroid 2013-08-16

Objective: Thyroid nodule measurement using ultrasonography (US) is widely performed in various clinical scenarios.The purpose of this study was to evaluate inter-observer variation US the volume and maximum diameter thyroid nodules.Materials Methods: This retrospective included 73 consecutive patients with 85 well-defined nodules greater than 1 cm their diameter.US examinations were independently by standardized methods, conducted two clinically experienced radiologists.The volume,...

10.3348/kjr.2015.16.3.560 article EN Korean Journal of Radiology 2015-01-01
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