A5102937569- Breast Lesions and Carcinomas
- AI in cancer detection
- Global Cancer Incidence and Screening
- Radiation Dose and Imaging
- Cancer and Skin Lesions
- Digital Radiography and Breast Imaging
- Breast Cancer Treatment Studies
- Radiology practices and education
- Radiomics and Machine Learning in Medical Imaging
- MRI in cancer diagnosis
- Ultrasound in Clinical Applications
- Cancer Diagnosis and Treatment
- Parasitic infections in humans and animals
- Medical Imaging Techniques and Applications
- Colorectal Cancer Screening and Detection
- Pelvic and Acetabular Injuries
- IgG4-Related and Inflammatory Diseases
- Ovarian cancer diagnosis and treatment
- Spinal Fractures and Fixation Techniques
- Gastrointestinal disorders and treatments
- CNS Lymphoma Diagnosis and Treatment
- Intraperitoneal and Appendiceal Malignancies
- Artificial Intelligence in Healthcare and Education
- Spinal Hematomas and Complications
- Biliary and Gastrointestinal Fistulas
Dankook University Hospital
2014-2024
Kyungpook National University Hospital
2021
Dankook University
2003-2017
University Medical Center
2017
Abstract Conventional deep learning (DL) algorithm requires full supervision of annotating the region interest (ROI) that is laborious and often biased. We aimed to develop a weakly-supervised DL diagnosis breast cancer at ultrasound without image annotation. Weakly-supervised algorithms were implemented with three networks (VGG16, ResNet34, GoogLeNet) trained using 1000 unannotated US images (500 benign 500 malignant masses). Two sets 200 (100 100 masses) used for internal external...
Objective:To analyze the diagnostic accuracy and trend in screening mammography Korea. Materials Methods:We retrospectively linked information from hospitals participating Alliance of Breast Cancer Screening Korea (ABCS-K) database National Program.We calculated performance indicators, including recall rate, cancer detection rate (CDR), positive predictive value (PPV), sensitivity, specificity, false-positive (FPR), interval (ICR).Changes indicators were as annual percent change with 95%...
To evaluate the efficacy of a mammography boot camp (MBC) to improve radiologists' performance in interpreting mammograms National Cancer Screening Program (NCSP) Korea. Between January and July 2013, 141 radiologists were invited 3-day educational program composed lectures group practice readings using 250 digital cases. The evaluated pre- post-camp test set 25 cases validated prior by experienced breast radiologists. Factors affecting performance, including age, type attending institution,...
The purpose of this study was to compare needle aspiration and vacuum-assistedbiopsy in the ultrasound-guided treatment lactational breast abscesses.Between January 2005 December 2014, a total 74 patients presented withlactational abscesses. Thirty these underwent with antibioticsalone, while remaining 44 lactating women abscesses were treated withneedle (n=25) or vacuum-assisted biopsy (n=19). Age, duration lactation, abscess diameter, pus culture results, number interventions, healing...
Objective: To compare the image quality of low-tube-voltage and low-iodine-concentration-contrast-medium (LVLC) computed tomography urography (CTU) with iterative reconstruction (IR) that conventional CTU.Materials Methods: This prospective, multi-institutional, randomized controlled trial was performed at 16 hospitals using CT scanners from various vendors.Patients were randomly assigned to following groups: 1) LVLC-CTU (80 kVp 240 mgI/mL) IR group 2) CTU (120 350 filtered-back projection...
Objective: To evaluate the interpretive performance and inter-observer agreement on digital mammographs among radiologists to investigate whether radiologist characteristics affect agreement. Materials Methods:The test sets consisted of full-field mammograms contained 12 cancer cases 1000 total cases.Twelve independently interpreted all mammograms.Performance indicators included recall rate, detection rate (CDR), positive predictive value (PPV), sensitivity, specificity, false (FPR), area...
The paranasal sinuses are known to be a rare location for metastasis. Renal cell carcinoma (RCC) is the most frequent primary tumor metastasize sinonasal region, followed by lung and breast cancer. In particular, clear type RCC, which represents approximately 85% of RCCs, characterized early metastasis, it sometimes spreads unusual sites (1, 2). Metastatic tumors in distributed maxillary, sphenoid, ethmoid, frontal sinuses, order decreasing frequency. Symptoms usually nonspecific, but...
The aim of this study was to evaluate the positive predictive value (PPV) and diagnostic performance ultrasonographic descriptors in fifth edition BI-RADS, comparing with fourth using video clips.From September 2013 July 2014, 80 breast masses 74 women (mean age, 47.5±10.7 years) from five institutions Korean Society Breast Imaging were included. Two radiologists individually reviewed static images analyzed according BI-RADS. PPV each descriptor calculated performances between editions...
Ultrasonography (renamed from the Journal of Korean Society Ultrasound in Medicine January 2014), official English-language journal (KSUM), is an international peer-reviewed academic dedicated to practice, research, technology, and education dealing with medical ultrasound, Aims Scope:Ultrasonography ultrasound.It published four times per year: 1, April July October 1. Original articles, topical reviews, pictorial essays, notable case reports are covering state-of-the-art content. also...
Young patients with dense breasts have a relatively low-positive biopsy rate for breast cancer (∼1 in 7). South Korean women higher density than Westerners. We investigated the benefit of using functional and metabolic imaging technique, diffuse optical spectroscopic (DOSI), to help standard care tools distinguish benign from malignant lesions premenopausal women. DOSI uses near-infrared light measure tissue composition by quantifying concentrations water (ctH2O), bulk lipid (ctLipid),...
Objective. Sparganosis is caused by the tapeworm larva of geneus Spirometra. Because sparganosis usually manifests as a migrating subcutaneous mass, sonography can play an important role in its diagnosis. Methods. In this series, we investigated 4 cases and focused on sonographic findings. Three involved breast, other scrotum, confirmed surgery. Results. The characteristics included poorly defined hyperechoic lesion with internal serpiginous tubular structures, anechoic structures...
We report a case of colonic metastasis from ovarian cancer presented as an intraluminal fungating mass mimicking primary colon 8 years after surgery for cancer. A 70-year-old woman with constipation. She had undergone extended total abdominal hysterectomy bilateral salpingo-oophorectomy papillary serous cystadenocarcinoma earlier. Colonoscopy showed large 10 cm the anal verge that was suspected to be colorectal computed tomography scan bulky in rectosigmoid junction. After lower anterior...
Objective: To investigate the effects of different types mammography equipment on screening outcomes by comparing performance film-screen (FSM), computed radiography (CRM), and digital (DM). Materials Methods:We retrospectively enrolled 128756 sets mammograms from 10 hospitals participating in Alliance for Breast Cancer Screening Korea between 2005 2010.We compared diagnostic accuracy analyzing area under receiver operating characteristic curve (AUC) with a 95% confidence interval (CI);...
Purpose: To evaluate the relation between pre-operative MR findings and intradiscal bone cement leakage. Materials Methods: Pre-operative vertebroplasty were performed in 188 vertebral bodies, 376 superior inferior cortical endplates intervertebral discs of 126 patients. We analyzed endplate injury linear low signal intensity lesions images measured leakage on post-operative CT fluoroscopy. Results: Intradiscal was found 11.4% (43/376) cases. The incidence T1, T2 weighted 52.1% 38.8%,...
Purpose: To evaluate the usefulness of ultrasound-guided mammotome biopsy for microcalcification and to suggest a new approach localization microcalcifications which are not detected on ultrasound. Materials Methods: Twenty-one calcific lesions in 21 women (aged 33-56 years) underwent ultrasoundguided, vacuum-assisted, mean 14 specimens per lesion were obtained. Calcification retrieval was defined as identification calcifications specimen radiographs. In 13 cases ultrasound imaging,...
Commonly, epidermal inclusion cysts (EICs) are benign cutaneous lesions that lined with stratified squamous epithelium and may occur in all body parts, including the breasts. EICs breast (EICB) commonly encountered clinically; it be under-reported because of their mild non-specific clinical presentation. Malignant transformation is extremely rare, occurring 0.011%-0.045%. Presently, we report a rare case cell carcinoma arising from an EICB woman invasive ductal carcinoma.표피낭종은 중층 편평상피로 구성되어...