A5016076978- Control and Dynamics of Mobile Robots
- Glaucoma and retinal disorders
- Radiomics and Machine Learning in Medical Imaging
- Robotic Path Planning Algorithms
- Robotics and Sensor-Based Localization
- COVID-19 diagnosis using AI
- Lung Cancer Diagnosis and Treatment
- AI in cancer detection
- Radiology practices and education
- Graphene research and applications
- Retinal Diseases and Treatments
- 2D Materials and Applications
- Eosinophilic Esophagitis
- Intraocular Surgery and Lenses
- Digital Radiography and Breast Imaging
- Retinal and Optic Conditions
- Textile materials and evaluations
- Microbial Natural Products and Biosynthesis
- Healthcare and Venom Research
- Indoor and Outdoor Localization Technologies
- Ocular Diseases and Behçet’s Syndrome
- Robotics and Automated Systems
- Gastric Cancer Management and Outcomes
- Gastroesophageal reflux and treatments
- Diamond and Carbon-based Materials Research
Gangnam Severance Hospital
2024
Yonsei University
2008-2024
Seoul National University Hospital
2018-2021
Sungkyunkwan University
2019-2020
Institute for Basic Science
2019-2020
Hanyang University Seoul Hospital
2018-2020
Nune Eye Hospital
2020
Seoul National University
2001-2019
Pusan National University Yangsan Hospital
2016-2017
Hannam University
2017
<h3>Importance</h3> The efficient and accurate interpretation of radiologic images is paramount. <h3>Objective</h3> To evaluate whether a deep learning–based artificial intelligence (AI) engine used concurrently can improve reader performance efficiency in interpreting chest radiograph abnormalities. <h3>Design, Setting, Participants</h3> This multicenter cohort study was conducted from April to November 2021 involved radiologists, including attending thoracic radiology fellows, residents,...
Background Evaluation of the glymphatic system with intrathecal contrast material injection has limited clinical use. Purpose To investigate feasibility using serial intravenous contrast-enhanced T1 mapping in quantitative evaluation putative dynamic activity various brain regions and to demonstrate effect sleep on humans. Materials Methods In this prospective study from May 2019 February 2020, 25 healthy participants (mean age, years ± 2 [standard deviation]; 15 men) underwent two cycles...
Design, synthesis, and biological evaluation of several domains the thiopeptide antibiotic thiostrepton led to discovery a biologically active fragment. The properties this novel small organic molecule include activity against methicillin-resistant Staphylococcus aureus (MRSA) vancomycin-resistant Enterococcus faecalis (VREF) bacterial strains, as well cytotoxic action number cancer cell lines.
To compare the lumbar vertebral bone marrow fat-signal fractions obtained from six-echo modified Dixon sequence (6-echo m-Dixon) with those single-voxel magnetic resonance spectroscopy (MRS) in patients low back pain.Vertebral were quantified by 6-echo m-Dixon (repetition time [TR] = 7.2 ms, echo (TE) 1.21 spacing 1.1 total imaging 50 seconds) and MRS measurements 25 targets (23 normal marrows, two focal lesions) 24 patients. The point-resolved was used for localized (TR 3000 TE 35 scan 1...
We explore the photoluminescence (PL) properties of hexagonal boron nitride (h-BN) quantum emitters embedded within atomically thin graphene/h-BN heterostructures fabricated by mechanical transfer. Stable light emission could be observed from h-BN which due to local presence multilayer are not subject fluorescence quenching graphene. By using graphene as a top gate contact, PL can tuned up 24 meV per V/nm, with high robustness over several voltage sweep cycles. Two different types were...
Background/Aims In spite of the improvement medical treatment for peptic ulcer disease (PUD), PUD is still one common upper gastrointestinal diseases. The purpose this study was to evaluate risk factors and general characteristics Korean patients diagnosed as at a single third referral center. Methods A total 310 patients, through endoscopy during year 2007 Seoul National University Bundang Hospital were, retrospectively, evaluated regarding age, gender, Helicobacter pylori (H. pylori)...
The purposes of this study were to establish criteria for the diameters normal extraocular muscles, width optic nerve, and globe position as revealed by CT, investigate effects age sex on these parameters in Korean population.Diameters muscles (medial, lateral, superior complex, inferior rectus), distance from interzygomatic line posterior margin globe, nerve-sheath length calculated 214 patients axial direct coronal CT images, analyzed.Normal range given mean+/-2SDs medial rectus, 2.2--5.4...
Hericium erinaceum, commonly called lion’s mane mushroom, is a traditional edible mushroom widely used in culinary applications and herbal medicines East Asian countries. In this study, new sterol, cerevisterol 6-cinnamate (6), was isolated from the fruiting bodies of H. erinaceum together with five aromatic compounds 1–5 sterols 7–11. The chemical structures these were elucidated using physical methods comparison HRESIMS, 1D-NMR (1H, 13C, DEPT) 2D-NMR (COSY, HMQC, HMBC, NOESY) spectra...
The protection and reasonable use of freshwater is one the main goals for our future, as water most important all organisms on earth including humans. Due to pollution, not only with xenobiotics, but also nutrients, status bodies has changed drastically. Excess nutrient load induces eutrophication processes and, a result, massive cyanobacterial blooms during summer times. As cyanobacteria are known produce several toxic secondary metabolites, so-called cyanotoxins, exhibiting hepato-, neuro-...
Abstract Two-dimensional (2D) heterostructures often provide extraordinary carrier transport as exemplified by superconductivity or excitonic superfluidity. Recently, a double-layer graphene (Gr) separated few-layered boron nitride demonstrated the Coulomb drag phenomenon: carriers in active layer passive layer. Here, we propose high-performance Gr/MoS 2 heterostructure transistors operating via drag, exhibiting high mobility (∼3700 cm V −1 s ) and on/off-current ratio (∼10 8 at room...
Ein Kernstück des RNA bindenden Antibiotikums Thiostrepton, die makrocyclische Dehydropiperidin-Thiazolin-Domäne (siehe Formel), wurde durch eine Azadiendimerisierung vom Hetero-Diels-Alder-Typ und selektive Funktionalisierung resultierenden Dehydropiperidinsystems erhalten.
Peptic ulcer disease (PUD) is one of the common gastrointestinal diseases, and its medical management has been developed so much that incidence serious complications, such as bleeding perforation, are declining significantly. Its prevalence in Korea not definitely decreased, probably due to increasing proportion elderly patients their rising usage non-steroidal anti-inflammatory drugs (NSAIDs) aspirin. This study was conducted identify risk factors for development recurrence peptic...
Objective: To investigate whether computed tomography (CT) and fluorine-18-labeled fluoro-2-deoxy-D-glucose (FDG) positron emission (PET) may be applied to distinguish thymic epithelial tumors (TETs) from benign cysts in the anterior mediastinum.Materials Methods: We included 262 consecutive patients with pathologically proven TETs 5 cm or smaller who underwent preoperative CT scans.In addition conventional morphological ancillary findings, relationship between lesion adjacent mediastinal...
The aim of this study was to evaluate the effectiveness simultaneous flexible ureteroscopic removal stones (URS) for ureteral and ipsilateral renal analyze predictive factors stone-free status.We retrospectively reviewed records patients who underwent URS from January 2010 May 2012. All operations used a ureteroscope. We identified 74 cases retrograde intrarenal surgery (74 patients). Stone-free status respectively defined as no visible clinically insignificant residual <3 mm on...
To evaluate whether computed tomography (CT) reconstruction algorithms affect the CT texture features of liver parenchyma.This retrospective study comprised 58 patients (normal liver, n = 34; chronic disease [CLD], 24) who underwent scans using a single scanner. All images were reconstructed filtered back projection (FBP), hybrid iterative (IR) (iDOSE⁴), and model-based IR (IMR). On arterial phase (AP) portal venous (PVP) imaging, quantitative analysis parenchyma single-slice region interest...
The purpose was to investigate the biological effects of mitomycin C (MMC) on inhibition cellular proliferation and subsequent synthesis extracellular matrix like type I collagen (PIP) laminin primary recurrent pterygia. 3H-thymidine assay for consistent with MMC dose time response both inhibitory effect greater pterygial cells than ones. by followed time-response curves, a stronger found in cells, but no significant difference between two types concerning synthesis. fibroblast more marked...
Introduction A chest X-ray (CXR) is the most common imaging investigation performed worldwide. Advances in machine learning and computer vision technologies have led to development of several artificial intelligence (AI) tools detect abnormalities on CXRs, which may expand diagnostic support a wider field health professionals. There paucity evidence impact AI algorithms assisting healthcare professionals (other than radiologists) who regularly review CXR images their daily practice. Aims To...