A5060568704- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Advanced Antenna and Metasurface Technologies
- Sarcoma Diagnosis and Treatment
- Advanced Optical Imaging Technologies
- Musculoskeletal synovial abnormalities and treatments
- Glioma Diagnosis and Treatment
- Orthopedic Surgery and Rehabilitation
- Pulmonary Hypertension Research and Treatments
- Management of metastatic bone disease
- Gastrointestinal Tumor Research and Treatment
- Radiomics and Machine Learning in Medical Imaging
- Liquid Crystal Research Advancements
- Artificial Intelligence in Healthcare and Education
- Neurofibromatosis and Schwannoma Cases
- Bone Tumor Diagnosis and Treatments
- Teratomas and Epidermoid Cysts
- COVID-19 diagnosis using AI
- Spam and Phishing Detection
- Congenital Heart Disease Studies
- Brain Metastases and Treatment
- Orthopedic Infections and Treatments
- Tracheal and airway disorders
- Advanced Malware Detection Techniques
- Shoulder Injury and Treatment
Pohang University of Science and Technology
2021-2024
University of Michigan–Ann Arbor
2024
Tsinghua University
2018-2020
Inje University Sanggye Paik Hospital
2011-2019
SUNY Downstate Health Sciences University
2017
Inje University
2014
Amorepacific (South Korea)
2010
The sudden outbreak of novel coronavirus 2019 (COVID-19) increased the diagnostic burden radiologists. In time an epidemic crisis, we hoped artificial intelligence (AI) to help reduce physician workload in regions with outbreak, and improve diagnosis accuracy for physicians before they could acquire enough experience new disease. Here, present our building deploying AI system that automatically analyzes CT images detect COVID-19 pneumonia features. Different from conventional medical AI,...
Abstract Vectorial holography has gained a lot of attention due to the promise versatile polarization control structured light for enhanced optical security and multi-channel communication. Here, we propose bifunctional metasurface which combines both structural color printing vectorial with eight channels towards advanced encryption applications. The colour prints are observed under white while encoded holograms reconstructed laser illumination. To encode multiple holographic images...
Abstract Metasurface holography, the reconstruction of holographic images by modulating spatial amplitude and phase light using metasurfaces, has emerged as a next‐generation display technology. However, conventional fabrication techniques used to realize metaholograms are limited their small patterning areas, high manufacturing costs, low throughput, which hinder practical use. Herein, efficiency hologram one‐step nanomanufacturing method with titanium dioxide nanoparticle‐embedded‐resin,...
Nanoimprint lithography is gaining popularity as a cost-efficient way to reproduce nanostructures in large quantities. Recent advances nanoimprinting using high-index nanoparticles have demonstrated replication of photonic devices, but it difficult confer special properties on beyond general metasurfaces. Here, we introduce novel method for fabricating light-emitting metasurfaces lithography. By utilizing quantum dots embedded resin, successfully imprint dielectric that function...
In the field of nanophotonics, metasurfaces have come to forefront in real‐world applications, owing their accessible exotic optical properties that can be readily designed and fabricated using currently available techniques. The subwavelength dimensions lightweight characteristics are attractive qualities for miniaturization devices already exploited rival, sometimes even outperform, conventional bulky optics. Over past decade, ample research has been undertaken produce high‐performance...
Secure packaging and transportation of light-sensitive chemical biomedical test tubes are crucial for environmental protection public health. Benefiting from the compact form factor high efficiency optical metasurfaces, we propose a broad-band polarization-insensitive flexible metasurface security sensitive packages in transport industry. We employ both propagation geometric phase novel TiO2 resin-based anisotropic nanoresonators to demonstrate visible domain. The ultraviolet nanoimprint...
Objectives Sonographically guided injections show more accuracy than blind injections, but there are no reports comparing sonographically intra‐articular injection approaches. This study examined the of at 3 different sites knee using medial, midlateral, and superolateral portals. Methods radiology evaluations were performed on 126 knees with osteoarthritis (Kellgren‐Lawrence grade 2 or 3). Six milliliters mixed material containing 1% lidocaine (1 mL), 20 mg triamcinolone a nonionic contrast...
There has been no practical guidelines for the management of patients with central nervous system (CNS) tumors in Korea many years. Thus, Korean Society Neuro-Oncology (KSNO), a multidisciplinary academic society, started to prepare CNS from February 2018.The Working Group was composed 35 medical experts Korea. References were identified through searches PubMed, MEDLINE, EMBASE, and Cochrane CENTRAL using specific sensitive keywords as well combinations keywords.First, maximal safe resection...
The objective of this study was to examine the accuracy ultrasound-guided intra-articular (IA) injections on three different sites knee using midmedial, midlateral, and superolateral portals.Ultrasound-guided IA injection a radiographic evaluation were performed 120 knees with osteoarthritis. Five milliliters mixed material consisting 1% lidocaine (1 ml), 20 mg triamcinolone nonionic contrast (3 ml) injected into space through portals. After each injection, determine whether had reached or...
Discovering fraud user behaviors is vital to keeping online websites healthy. Fraudsters usually exhibit grouping behaviors, and researchers have effectively leveraged this behavior design unsupervised algorithms detect groups. In work, we propose a visualization system, FraudVis, visually analyze the detection from temporal, intra-group correlation, inter-group feature selection, individual perspectives. FraudVis helps domain experts better understand algorithm output detected behaviors....
Background There was no practical guideline for the management of patients with central nervous system tumor in Korea past.Thus, Korean Society Neuro-Oncology (KSNO), a multidisciplinary academic society, developed glioblastoma successfully and published it Brain Tumor Research Treatment, official journal KSNO, April 2019.Recently, KSNO World Health Organization (WHO) grade III cerebral glioma adults has been established. MethodsThe Working Group composed 35 medical experts Korea.References...
Citrobacter koseri is a gram-negative bacillius that belongs to the Enterobacteriaceae family. It an uncommon pathogen typically causes meningitis and brain abscesses in children, however central nervous system (CNS) infections are rarely found adults. We present case of C. immunocompetent adult secondary intestinal micro-perforation caused by Strongyloides A 76-year-old man admitted for asthma exacerbation developed septic shock. lumbar puncture revealed bacterial meningitis. Blood CSF...
Acute compartment syndrome of the lower leg is a surgically emergent condition in which pressure within anatomically closed osseofascial rises to reduce arterial and capillary circulation, finally leading irreversible muscle nerve damage. It usually associated with major trauma such as fracture or crushing injury, most commonly occurs anterior deep posterior compartments. The acute isolated lateral less typical minor trauma. However, there are few reports idiopathic syndrome, no report its...
This paper is devoted to a lightweight convolutional neural network based on the attention mechanism called tiny (TANet). The TANet consists of three main parts termed as reduction module, self-attention operation, and group convolution. module alleviates information loss caused by pooling operation. new parameter-free operation makes model focus learning important images. convolution achieves compression multibranch fusion. Using parts, proposed enables efficient plankton classification...
Extraskeletal Ewing's sarcoma (EES) is a rare malignant soft tissue tumor which morphologically indistinguishable from skeletal ES.EES usually occurs in young adults and children there has been only one case reported patient aged over 70 years old.We report of an EES arising the first thoracic spinal nerve root 73-year-old female, was misdiagnosed as benign sheath preoperative imaging evaluation.