A5032391935- Surgical Simulation and Training
- Retinal Diseases and Treatments
- Augmented Reality Applications
- Engineering Applied Research
- Advanced MRI Techniques and Applications
- Manufacturing Process and Optimization
- Retinal Imaging and Analysis
- Genital Health and Disease
- Advanced Electrical Measurement Techniques
- Inertial Sensor and Navigation
- Thyroid Cancer Diagnosis and Treatment
- Soft Robotics and Applications
- Anatomy and Medical Technology
- Head and Neck Anomalies
- Real-time simulation and control systems
- Phonocardiography and Auscultation Techniques
- Leprosy Research and Treatment
- Gaze Tracking and Assistive Technology
- Thermodynamic and Structural Properties of Metals and Alloys
- Retinal and Macular Surgery
- AI in cancer detection
- Electrical and Bioimpedance Tomography
- EEG and Brain-Computer Interfaces
- Advanced Multi-Objective Optimization Algorithms
- Electromagnetic wave absorption materials
Seoul National University
2010-2024
ABL Bio (South Korea)
2021
Pusan National University
2005-2017
Yonsei University
2004-2016
Hanyang University
2015
Korea Research Institute of Standards and Science
2007-2014
Eulji General Hospital
2013
Eulji University Hospital
2013
Korea Institute of Radiological and Medical Sciences
2012
Kyung Hee University Medical Center
2009
Background Accurate interpretation of chest radiographs requires years medical training, and many countries face a shortage professionals to meet such requirements. Recent advancements in artificial intelligence (AI) have aided diagnoses; however, their performance is often limited due data imbalance. The aim this study was augment imbalanced using generative adversarial networks (GANs) evaluate the clinical quality generated images via multi-center visual Turing test. Methods Using six...
Robot-assisted surgery platforms are utilized globally thanks to their stereoscopic vision systems and enhanced functional assistance. However, the necessity of ergonomic improvement for use by surgeons has been increased. In surgical robots, issues with chronic fatigue exist owing fixed posture conventional stereo viewer (SV) system. A head-mounted display was adopted alleviate inconvenience, a virtual platform (VVP) is proposed in this study. The VVP can provide various critical data,...
Timely diagnosis and prognostication of Alzheimer's disease (AD) mild cognitive impairment (MCI) are pivotal for effective intervention. Artificial intelligence (AI) in neuroradiology may aid such appropriate prognostication. This study aimed to evaluate the potential novel diffusion model-based AI enhancing AD MCI through superresolution (SR) brain magnetic resonance (MR) images. 1.5T MR scans patients with or healthy controls (NC) from Disease Neuroimaging Initiative 1 (ADNI1) were...
Purpose: To compare macular thickness measurements obtained from time domain optical coherence tomography (TD-OCT) and 2 spectral (SD) OCTs to evaluate their repeatability agreement in normal subjects diabetic edema patients. Methods: Fifty-four healthy, 26 patients were participated this study. In a randomly selected eye each subject, two serial TD-OCT (Stratus OCT) SD-OCTs (Cirrus HD-OCT, Spectralis HRA+OCT) by an experienced technician random order. Nine areas of map repeatabilities the 3...
Abstract Robotic surgery is preferred over open or laparoscopic surgeries due to its intuitiveness and convenience. However, prolonged use of surgical robots can cause neck pain joint fatigue in wrist fingers. Also, input systems are bulky difficult maintain. To resolve these issues, we propose a novel module based on real-time 3D hand tracking driven by RGB images MediaPipe framework control such as patient side manipulator (PSM) endoscopic camera (ECM) da Vinci research kit. In this paper,...
On-scene resuscitation time is associated with out-of-hospital cardiac arrest (OHCA) outcomes. We developed and validated reinforcement learning models for individualized on-scene times, leveraging nationwide Korean data. Adult OHCA patients a medical cause of were included (N = 73,905). The optimal policy was derived from conservative Q-learning to maximize survival. return spontaneous circulation hazard rates estimated the Random Survival Forest used as intermediate rewards handle sparse...
Brassica napus is the most common feedstock for biodiesel production, and its cultivation area has been rapidly increased. Thus, B. residues left in field after harvest are valuable resources. However, there have few studies on biologically active substances from plant. The objective of this study to evaluate cytotoxicity/photodynamic activity antioxidant plant extracts. plants were sequentially extracted with organic solvents (hexane, chloroform, ethanol, water) then screened cytotoxicity...
Two terminal dual source impedance bridge was configured using commercial voltage calibrators. The performance evaluated by measuring 1 to resistance ratio at kHz kΩ and 10 resistors. same used for the (R) inductor (L) capacitor (C) measurements adjusting phase between sources. Then, AC value found from R : C ratio. This simple two proved its reliable versatile measurement capability.
The ac/dc magnetic-flux-density (MFD) standard systems were developed for the calibration of magnetometers and test sensors materials. dc MFD is maintained to cover range from 20 µT 2.5 T with expanded uncertainties (k = 2) 4 µT/T 80 µT/T. uncertainty ac 0.2 % in 1 Hz kHz. We had been participated international key comparison achieve equality mutual agreement between institutes results calibrations tests.
This paper describes system setup, based on a Josephson sampling voltmeter for precision power calibration. The waveforms generated by voltage and current sources, which are applied to meter under test, transformed 1-V level signals measured single with uncertainty (k = 2) less than 0.5 μV/V.
To investigate the association between fundus autofluorescence (FAF) and visual acuity, recovery of foveal microstructure, FAF in surgically closed macular holes.Twenty-six eyes with hole were classified into two groups based on FAF: normal (NAF) or increased (IAF). The acuity was analyzed. In addition, we examined relationship microstructure assessed by spectral domain optical coherence tomography after surgery.At 1 month 6 months surgery, there 9 NAF 17 IAF eyes. There no differences at...
Abstract With the advent of robot-assisted surgery, user-friendly technologies have been applied to da Vinci surgical system (dVSS), and their efficacy has validated in worldwide fields. However, further improvements are required traditional manipulation methods, which cannot control an endoscope instruments simultaneously. This study proposes a speech recognition interface (SRCI) for controlling via commands while manipulating replace method. The usability-focused comparisons newly proposed...
The intraoperative estimated blood loss (EBL), an essential parameter for perioperative management, has been evaluated by manually weighing in gauze and suction bottles, a process both time-consuming labor-intensive. As the novel EBL prediction platform, we developed automated deep learning model, utilizing patch-wise crumpled state (P-W CS) of images with texture analysis. proposed algorithm was using animal data obtained from porcine experiment validated on human prospectively collected...
In a folding cellular phone, the device is repeatedly opened and closed by user, which eventually results in fatigue damage, particularly to front of folder. Hence, it important improve safety endurance folder while also reducing its weight. This article presents an optimal design for that maximizes minimizing thickness. Design data analysis optimization were obtained experimentally using test jig. Multi-objective was carried out nonlinear regression model. Three methods employed:...