A5081154222- Thyroid Cancer Diagnosis and Treatment
- Head and Neck Anomalies
- Thyroid and Parathyroid Surgery
- Radiomics and Machine Learning in Medical Imaging
- Breast Lesions and Carcinomas
- Salivary Gland Tumors Diagnosis and Treatment
- Breast Cancer Treatment Studies
- AI in cancer detection
- BRCA gene mutations in cancer
- MRI in cancer diagnosis
- Cancer and Skin Lesions
- Ovarian cancer diagnosis and treatment
- Cancer Diagnosis and Treatment
- Cervical Cancer and HPV Research
- Radiation Dose and Imaging
- Neuroendocrine Tumor Research Advances
- Ultrasound Imaging and Elastography
- Global Cancer Incidence and Screening
- Medical Imaging Techniques and Applications
- Digital Radiography and Breast Imaging
- Radiology practices and education
- Medical Imaging and Pathology Studies
- Photoacoustic and Ultrasonic Imaging
- Parathyroid Disorders and Treatments
- Breast Implant and Reconstruction
Yonsei University
2016-2025
Severance Hospital
2015-2025
University of Alberta
2024
Research Institute of Radio
2008-2022
Daejeon University
2020
Gangnam Severance Hospital
2016-2019
Asan Medical Center
2017
Ewha Womans University
2017
Presbyterian Medical Center
2003-2016
Ajou University
2016
Purpose To develop a practical thyroid imaging reporting and data system (TIRADS) with which to categorize nodules stratify their malignant risk. Materials Methods The institutional review board approved this retrospective study, the requirement obtain informed consent for of images records was waived. From May December 2008, ultrasonographically (US)-guided fine-needle aspiration biopsy (FNAB) performed in 3674 focal 3414 consecutive patients. study included 1658 (≥1 cm maximum diameter at...
Preoperative Staging of Papillary Thyroid Carcinoma: Comparison Ultrasound Imaging and CTJi Soo Choi1, Jinna Kim1, Jin Young Kwak1, Min Jung Hang Seok Chang2 Eun-Kyung Kim1Audio Available | Share
Purpose To retrospectively evaluate the diagnostic performance of power Doppler ultrasonography (US) in depicting vascularity and to determine whether combination suspicious gray-scale US features is more useful predicting thyroid malignancy than are alone. Materials Methods This was an institutional review board-approved retrospective study, with waiver informed consent. A total 1083 nodules 1024 patients (median age, 51 years; range, 16–83 years), consisting 886 women 50 years) 138 men 53...
To evaluate the diagnostic performance of gray-scale ultrasonography (US) and elastography in differentiating benign malignant thyroid nodules.This was an institutional review board-approved retrospective study with waiver informed consent. A total 703 solid nodules 676 patients (mean age, 49.7 years; range, 18-79 years) were included; there 556 women 49.5 20-74 120 men 50.7 years). Nodules marked hypoechogenicity, poorly defined margins, microcalcifications, a taller-than-wide shape...
Purpose To compare malignancy risk stratification of thyroid nodules with the 2014 American Thyroid Association (ATA) management guidelines and Imaging Reporting Data System (TIRADS). Materials Methods This retrospective study was approved by institutional review board. The requirement to obtain informed consent waived. From November 2013 July 2014, 1293 in 1241 patients (mean age, 50.8 years ± 13.5) were included this study. All measured at least 10 mm. Solidity, hypoechogenicity or marked...
Thyroid ultrasound (US) is used as the first diagnostic tool to assess management of disease. In spite its importance, US a very subjective method and highly dependent on skill performer. There have been few reports evaluating thyroid performance even fewer observer variability in assessment. Therefore, we evaluated inter- intraobserver variations assessment nodules diagnosis among four radiologists estimated accuracy.A total 204 144 patients were reviewed. 89 benign 115 malignant cases....
The objective of our study was to investigate interobserver agreement for the diagnosis malignant thyroid nodules using conventional B-mode ultrasound and real-time freehand elastography.Between December 2007 February 2008, 45 patients (age range, 19-73 years; mean age +/- SD, 45.0 12.2 years) with 52 were examined elastography. All scheduled undergo surgery because a nodule had been proven on aspiration cytology. Three radiologists independently performed elastography analyzed images. Using...
Fine-needle aspiration (FNA) biopsy of thyroid nodules is minimally invasive and safe usually performed on an outpatient basis. However, the optimal application FNA requires not only technical skill but also awareness limitations procedure, indications for its use, factors that affect adequacy specimen, postprocedural management strategy. Ultrasonographic (US) features are considered include single multiple nodules. The results operator dependent. In addition, may be affected by lesion...
Several studies report that detection of thyroglobulin (Tg) in fine-needle aspiration (FNA) biopsy washout fluid from lymph nodes identifies recurrences/metastases differentiated papillary thyroid cancer (DPTC) the neck with higher sensitivity and specificity than cytology (FNAC). However, diagnostic FNA-Tg cutoff values have not yet been established.To determine an appropriate threshold value for Tg levels FNA patients node metastases or recurrences DPTC.We performed ultrasound (US)-guided...
The purpose of this article is to evaluate the interobserver variability elastography on real-time ultrasound and how it influences agreement final assessment ultrasound.From April May 2009, 65 breast lesions 53 patients (mean age, 42.6 years; range, 18-72 years) who underwent ultrasound-guided core biopsy were included in study. Ultrasound images lesion subjected obtained prospectively analyzed by three radiologists with individual image scanning prior biopsy. Each radiologist recorded...
Clinical Application of the BI-RADS Final Assessment to Breast Sonography in Conjunction with MammographyEun-Kyung Kim1, Kyung Hee Ko1, Ki Keun Oh1, Jin Young Kwak1, Jai You1, Min Jung Kim1 and Byoung-Woo Park2Audio Available | Share
Objective:The objective of this retrospective study was to develop and validate a simple diagnostic prediction model by using ultrasound (US) features thyroid nodules obtained from multicenter data.Materials Methods: Patient data were collected 20 different institutions the included 2000 1796 patients.For developing estimate malignant risk suspicious US features, we developed training in subset 1402 1260 patients.Several evaluated create scoring tool.The scores for such estimated calculating...
To investigate the value of ultrasonographic (US) features in thyroid nodules with initially benign cytologic results.The institutional review board approved this retrospective study and required neither patient approval nor informed consent for images records. From October 2003 to February 2006, 6118 focal 6025 consecutive patients underwent US-guided fine-needle aspiration biopsy (FNAB). This included 1343 1 cm or larger 1302 that were diagnosed as at initial evaluation pathologic...
Abstract Background Pulmonary actinomycosis is a chronic pulmonary infection caused by Actinomyces . Both improving oral hygiene and early application of antibiotics to the case suspicious infections result in changes incidences presentations actinomycosis. However, there are little reports dealt with recent clinical characteristics This study aimed review occurred during first decade 21st century. Methods retrospective was performed on 94 subjects diagnosed pathologically from January 2000...
We designed a deep convolutional neural network (CNN) to diagnose thyroid malignancy on ultrasound (US) and compared the diagnostic performance of CNN with that experienced radiologists.Between May 2012 February 2015, 589 nodules in 519 patients were diagnosed as benign or malignant by surgical excision. Experienced radiologists retrospectively reviewed US test set. CNNs trained tested using retrospective data 439 150 images, respectively. Diagnostic performances between two groups.Of...
Abstract Triple-negative breast cancer (TNBC) is sometimes mistaken for fibroadenoma due to its tendency show benign morphology on ultrasound (US) albeit aggressive nature. This study aims develop a radiomics score based US texture analysis differential diagnosis between TNBC and fibroadenoma, evaluate diagnostic performance compared with pathologic results. We retrospectively included 715 pathology-proven fibroadenomas 186 TNBCs which were examined by three different machines. developed the...
Abstract Computer-aided diagnosis (CAD) systems hold potential to improve the diagnostic accuracy of thyroid ultrasound (US). We aimed develop a deep learning-based US CAD system (dCAD) for nodules and compare its performance with those support vector machine (SVM)-based (sCAD) radiologists. dCAD was developed by using images 4919 from three institutions. Its prospectively evaluated between June 2016 February 2017 in 286 nodules, compared sCAD radiologists, logistic regression generalized...
Background: Extrathyroidal extension is an important factor to determine the extent of thyroid surgery. The aim present study was evaluate usefulness high-resolution ultrasound (US) for predicting extrathyroidal papillary microcarcinoma (PTMC). Methods: This included a total 221 PTMCs in 181 patients. PTMC defined as carcinoma equal or less than 1 cm size. US findings, such contact and disruption capsule, were evaluated predict carcinoma. We calculated diagnostic accuracy odds ratio each...
To evaluate the association of known prognostic factors with BRAF(V600E) mutation and its ultrasonographic (US) features in Korean patients papillary thyroid microcarcinoma (PTMC).This retrospective study was institutional review board approved; informed consent not required from patients. From July 2008 to November 2008, 339 consecutive underwent surgery for PTMC. US-guided fine-needle aspiration biopsy performed BRAF status nodules before surgery. Logistic regression analysis assess...
The purpose of our study was to investigate ultrasound criteria determine the most accurate criterion differentiate metastatic from benign lymph nodes on and evaluate frequency metastasis according cytology results.One hundred eighteen consecutive patients with thyroid malignancy underwent fine-needle biopsy suspicious nodes. We investigated diagnostic performance each feature (loss fatty hilum, presence cystic change or calcification, hyperechogenicity, round shape) 1 2. considered be if...