A5019174001- Hepatocellular Carcinoma Treatment and Prognosis
- Liver Disease Diagnosis and Treatment
- Radiomics and Machine Learning in Medical Imaging
- MRI in cancer diagnosis
- Spacecraft Design and Technology
- Colorectal Cancer Surgical Treatments
- Colorectal and Anal Carcinomas
- Advanced X-ray and CT Imaging
- Prostate Cancer Diagnosis and Treatment
- Underwater Vehicles and Communication Systems
- Radiation Dose and Imaging
- Inflammatory Bowel Disease
- Atrial Fibrillation Management and Outcomes
- Speech and Audio Processing
- AI in cancer detection
- Advanced MRI Techniques and Applications
- Acute Kidney Injury Research
- Indoor and Outdoor Localization Technologies
- Satellite Communication Systems
- Liver Disease and Transplantation
- Lanthanide and Transition Metal Complexes
- Trauma, Hemostasis, Coagulopathy, Resuscitation
- Sarcoma Diagnosis and Treatment
- Intraperitoneal and Appendiceal Malignancies
- Hydraulic flow and structures
Samsung (South Korea)
2025
Yonsei University
2017-2024
Severance Hospital
2017-2024
Daegu Catholic University Medical Center
2023-2024
Seoul National University Hospital
2024
Weatherford College
2020
Korea Aerospace Research Institute
2011-2012
To evaluate the image quality and lesion detectability of lower-dose CT (LDCT) abdomen pelvis obtained using a deep learning reconstruction (DLIR) algorithm compared with those standard-dose (SDCT) images.This retrospective study included 123 patients (mean age ± standard deviation, 63 11 years; male:female, 70:53) who underwent contrast-enhanced abdominopelvic LDCT between May August 2020 had prior SDCT same scanner within year. images were reconstructed hybrid iterative (h-IR) DLIR at...
This study emphasizes the significance of exploring distance-based source separation (DSS) in outdoor environments. Unlike existing studies that primarily focus on indoor settings, proposed model is designed to capture unique characteristics audio sources. It incorporates advanced techniques, including a two-stage conformer block, linear relation-aware self-attention (RSA), and TensorFlow Lite GPU delegate. While RSA may not physical cues as explicitly quadratic RSA, enhances model's context...
To assess the feasibility of 3D navigator-triggered magnetic resonance cholangiopancreatography (MRCP) with combined parallel imaging (PI) and compressed sensing (CS).With Institutional Review Board approval, 30 consecutive patients who underwent MRCP for suspected pancreaticobiliary disease were prospectively recruited. All conventional PI alone, CS using a 3T machine. The acquisition time relative duct-to-periductal contrast ratios (RCs) at three biliary segments quantitatively compared...
Objective: To compare the performance of deep learning-based lesion detection algorithm (DLLD) in detecting liver metastasis with that radiologists. Materials and Methods:This clinical retrospective study used 4386-slice computed tomography (CT) images labels from a training cohort (502 patients colorectal cancer [CRC] November 2005 to December 2010) train DLLD for metastasis, CT validation (40 99 metastatic lesions 45 without January 2011 2011) comparing readers (three abdominal...
Microvascular invasion (MVI) is one of the most important prognostic factors for hepatocellular carcinoma (HCC) recurrence, but its application in preoperative clinical decisions limited. This study aimed to identify predictive MVI HCC and further evaluate oncologic outcomes different types extents hepatectomy according stratified risk MVI.
Abstract Purpose We propose a deep learning method that classifies focal liver lesions (FLLs) into cysts, hemangiomas, and metastases from portal phase abdominal CT images. synthetic data augmentation process to alleviate the class imbalance Lesion INformation Augmented (LINA) patch improve efficiency. Methods A dataset of 502 scans 1,290 FLLs was used. First, diversify training patterns, we suggest using DCGAN‐based lesion mask synthesis pix2pix‐based mask‐to‐image translation. Second,...
Purpose: To assess associations between surveillance intervals in a national hepatocellular carcinoma (HCC) program and receiving curative treatment mortality using nationwide cohort data for Korea.Materials Methods: Using the National Health Insurance Service Database of Korea, we retrospectively identified 3201852 patients, target population HCC program, 2008 2017.After exclusion, total 64674 patients were divided based on intervals: never screened, ≤6 months (6M), 7-12 (1Y), 13-24 (2Y),...
BACKGROUND. Long acquisition times for breath-hold contrast-enhanced (CE) T1-weighted imaging in MR enterography (MRE) protocols result reduced image quality. OBJECTIVE. The purpose of this study was to compare CE performed using sensitivity encoding (SENSE) and compressed sensing-SENSE (CS-SENSE) terms quality diagnostic performance active inflammation Crohn disease (CD). METHODS. This retrospective included 41 patients (31 men, 10 women; mean age, 34 ± 12 [SD] years) who underwent MRE...
Background In order to obtain timely treatment, the early detection of recurrent ovarian cancer is essential. Despite technical advances in multi-detector row computed tomography (MDCT), low sensitivity CT for recurrence has not been improved much due its poor soft tissue discrimination. Purpose The aim this study describe patterns erroneous postoperative MDCT interpretation recurred peritoneal lesions patients with advanced (AOC). Material and methods Between 2011 2018, we reviewed...
Purpose: Locally advanced rectal cancer (LARC) is managed by chemoradiotherapy (CRT), followed surgery. Herein we reported patients with metastases during or after CRT.Methods: Data of LARC who received CRT from 2008 to 2017 were reviewed. Patients included. Those metastatic tumors at the initial diagnosis excluded.Results: Fourteen (1.3%) 1,092 presented metastases. Magnetic resonance circumferential resection margin (mrCRM) and mesorectal lymph nodes (LNs) positive in 12 (85.7%)....
Abstract Objectives Angiotensin system is a major cause of heart failure and arrhythmia. Despite lack direct evidence that oxidative stress causes ventricular arrhythmia, reversal considered plausible therapy. This study evaluated the Ca2+/calmodulin-dependent protein kinase II (CaMKII) inhibitor could suppress arrhythmia in cardiac hypertrophy rabbit model. Methods (Ang II) or saline was administrated for 2 weeks via osmotic minipumps implanted subcutaneously midclavicular region. Hearts...
Purpose We aimed to assess imaging findings and detection sensitivity for melanoma liver metastases on gadoxetic acid-enhanced magnetic resonance (MRI). Methods This retrospective study included patients with metastasis who underwent MRI. Two abdominal radiologists independently evaluated signal characteristics of morphologic (precontrast T1- T2-weighted imaging), diffusion-weighted (DWI), dynamic imaging, hepatobiliary phase (HBP). Imaging were compared according HBP the primary site using...
To investigate molecular and functional consequences of additional exposures to iodine- or gadolinium-based contrast agents within 24 hours from the initial intravenous administration iodine-based through an animal study.