A5007863861- Advanced X-ray and CT Imaging
- Cardiac Imaging and Diagnostics
- Anatomy and Medical Technology
- Radiation Dose and Imaging
- Surgical Simulation and Training
- Augmented Reality Applications
- Fluid Dynamics and Mixing
- Advanced materials and composites
- Nasal Surgery and Airway Studies
- Infrastructure Maintenance and Monitoring
- Electrical and Bioimpedance Tomography
- Cardiac Valve Diseases and Treatments
- Sinusitis and nasal conditions
- Optical Coherence Tomography Applications
- Adversarial Robustness in Machine Learning
- Facial Nerve Paralysis Treatment and Research
- Advanced Sensor and Energy Harvesting Materials
- Medical Imaging Techniques and Applications
- Advanced ceramic materials synthesis
- Metal and Thin Film Mechanics
- Advanced Neural Network Applications
- Photoacoustic and Ultrasonic Imaging
Seoul National University Hospital
2021-2025
Seoul National University
2009-2024
<title>Abstract</title> Traditional wearable ultrasound devices pose challenges concerning the rigidity and environmental impact of lead-based piezoelectric materials. This study proposes a novel silicon nanocolumn capacitive micromachined ultrasonic transducer (snCMUT) array for real-time imaging in disposable patches. Using lead-free design, snCMUT incorporates nanocolumns to address existing issues achieves high transmission efficiency (220 kPa/V), flexibility, low power consumption. The...
Quantifying aortic valve calcification is critical for assessing the severity of stenosis, predicting cardiovascular risk, and guiding treatment decisions. This study evaluated feasibility a deep learning-based automatic quantification using contrast-enhanced coronary CT angiography compared results with manual calcium scoring. A retrospective analysis 177 patients undergoing stenosis evaluation was conducted, divided into development set (n = 97) an internal validation 80). The DeepLab v3 +...
Abstract Objectives This study aimed to validate the agreement and diagnostic performance of a deep-learning-based coronary artery calcium scoring (DL-CACS) system for ECG-gated non-gated low-dose chest CT (LDCT) across multivendor datasets. Materials methods In this retrospective study, datasets from Seoul National University Hospital (SNUH, 652 paired scans) Stanford public dataset (425 199 were analyzed. Agreement metrics included intraclass correlation coefficient (ICC), determination (...
To evaluate the impact of surgical simulation training using a three-dimensional (3D)-printed model tetralogy Fallot (TOF) on skill development. A life-size congenital heart disease was printed Stratasys Object500 Connex2 printer from preoperative electrocardiography-gated CT scans 6-month-old patient with TOF complex pulmonary stenosis. Eleven cardiothoracic surgeons independently evaluated suitability four 3D-printed models composite Tango 27, 40, 50, and 60 in terms palpation, resistance,...
Abstract Automatic segmentation of the coronary artery using computed tomography angiography (CCTA) images can facilitate several analyses related to disease (CAD). Accurate lumen or plaque region is one most important factors. This study aimed analyze performance a software platform with deep learning-based location-adaptive threshold method (DL-LATM) against commercially available platforms CCTA. The dataset from intravascular ultrasound (IVUS) 26 vessel segments 19 patients was used as...
Blooming artifacts caused by calcifications appearing on computed tomography (CT) images lead to an underestimation of the coronary artery lumen size, and higher X-ray energy levels are suggested reduce blooming with subjective visual assessment. This study aimed evaluate effect quantitative measurement adjacent pixels affected calcification using CT images. In this two-part study, were acquired from dual-energy scanners changing such as kilovoltage peak (kVp) kilo-electron volts (keV)....
The nasal cavity has the function of conditioning air inhaled into lungs by heating, humidifying, and filtering dust virus-borne aerosols. Analyzing flow field in is vital because its strongly related to dynamics. Due experimental limitations posed complex internal geometry cavity, most previous studies have utilized Reynolds averaged Navier–Stokes based computational fluid dynamics (CFD) simulations. In this study, a post-operative was evaluated using not only CFD simulations but also...
OBJECTIVE Three-dimensional (3D) printed temporal bone model draws great attention as a promising alternative for conventional cadaveric in education of otologic surgery. However, its high price and requirement specialized tools hinder widespread use. We devised simple educational based on lattice structure to overcome these problems compared it with commercial model. METHODS converted high-resolution computed tomography images into stereolithography format, using the G005 3D printing system...