Publications by authors named "Seung Hwan Baek"

Thromboembolism, a serious complication in patients with liver abscesses, can lead to organ deterioration if left untreated. However, factors associated with thromboembolism in these patients remain poorly understood. We aimed to identify the factors associated with liver abscess complications, with a focus on thromboembolism and metastatic infection.

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  • The study aimed to investigate the origins of prostatic arteries (PAs) in Korean men and compare findings with existing literature.
  • A total of 108 male patients with urinary issues underwent prostatic artery embolization (PAE), and their artery anatomy was categorized using established systems.
  • Results showed that the most common prostatic artery origin was from the internal pudendal artery, followed by the superior vesical and obturator arteries, with the most prevalent internal iliac artery pattern being type A.
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: Management of hepatic hemangioma (HH) in infancy ranges from close monitoring to surgical resection. We analyzed the clinical characteristics and outcomes of HH according to its treatment options, with particular focus on challenging cases. : Data of patients diagnosed with HHs in their first year of life and followed up for at least 1 year were retrospectively reviewed and divided into treatment and observation groups.

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Holographic displays can generate light fields by dynamically modulating the wavefront of a coherent beam of light using a spatial light modulator, promising rich virtual and augmented reality applications. However, the limited spatial resolution of existing dynamic spatial light modulators imposes a tight bound on the diffraction angle. As a result, modern holographic displays possess low étendue, which is the product of the display area and the maximum solid angle of diffracted light.

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  • Dexamethasone is a corticosteroid used to prevent bronchopulmonary dysplasia (BPD) in preterm infants, and this study analyzes its use and effectiveness in very low birthweight infants over a period of 8 years in South Korea.
  • Of the 11,261 eligible infants, 20.5% received dexamethasone, with higher usage rates among those with lower gestational ages; however, those in the 'Dex' group had more severe cases of BPD and required increased ventilation support.
  • Factors contributing to poor response to dexamethasone included early inflammation, low birth weight, and complications such as pulmonary hypertension and treatments for ductus arteriosus.
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Unlabelled: Detection and analysis of viral genomes with Nanopore sequencing has shown great promise in the surveillance of pathogen outbreaks. However, the number of virus detection pipelines supporting Nanopore sequencing is very limited. Here, we present VirPipe, a new pipeline for the detection of viral genomes from Nanopore or Illumina sequencing input featuring streamlined installation and customization.

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The subclavian vein is an uncommon route for tunneled hemodialysis catheter (tHDC) placement because of its potency for future dialysis access. However, when favored access routes have been exhausted because of repeated catheterization or limited life expectancy, the subclavian vein can be used for urgent hemodialysis. A subclavian catheterization has a technical problem.

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Background: We aimed to examine the delay in antiviral initiation in rapid antigen test (RAT) false-negative children with influenza virus infection and to explore the clinical outcomes. We additionally conducted a medical cost-benefit analysis.

Methods: This single-center, retrospective study included children (aged < 10 years) with influenza-like illness (ILI), hospitalized after presenting to the emergency department during three influenza seasons (2016-2019).

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Nano-optic imagers that modulate light at sub-wavelength scales could enable new applications in diverse domains ranging from robotics to medicine. Although metasurface optics offer a path to such ultra-small imagers, existing methods have achieved image quality far worse than bulky refractive alternatives, fundamentally limited by aberrations at large apertures and low f-numbers. In this work, we close this performance gap by introducing a neural nano-optics imager.

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  • The study focused on the incidence and characteristics of cholangitis in patients with biliary atresia after undergoing Kasai portoenterostomy (KPE).
  • Among 160 patients, 78.8% experienced cholangitis, with a cumulative incidence of 75.5% at one year and 84.2% at five years post-surgery.
  • The research identified Enterococcus faecium as the most common pathogen and highlighted issues with antimicrobial susceptibility, suggesting the need for tailored antibiotic therapy.
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A 42-year-old man had an unstable Jefferson type IV atlas fracture with unilateral vertebral artery occlusion after a diving accident. We performed C1-ring reconstruction with a crosslink rod and C2 fixation to directly reduce the fracture fissure. Within 6 h, cerebellar hemisphere infarction developed.

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For extending the dynamic range of video, it is a common practice to capture multiple frames sequentially with different exposures and combine them to extend the dynamic range of each video frame. However, this approach results in typical ghosting artifacts due to fast and complex motion in nature. As an alternative, video imaging with interlaced exposures has been introduced to extend the dynamic range.

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  • This work presents a new electrothermal MEMS (Microelectromechanical Systems) device designed for stereoscopic endoscopy, featuring a parallel plate-rotation mechanism.
  • The device uses a thin optical plate connected to a microactuator made of silicon and aluminum, allowing for a rotation of up to 37°, which helps create 3D images similar to those made by traditional binocular cameras.
  • With compact dimensions of just 3.4 mm x 3.3 mm x 1 mm, this innovation offers a promising approach to enhance 3D imaging capabilities in endoscopic procedures.
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