Publications by authors named "Gwon D"

Objective: This study aimed to evaluate the association between tumor necrosis factor-α inhibitor (TNFi) therapy and cardiovascular (CV) outcomes, as well as all-cause mortality, in patients with ankylosing spondylitis (AS).

Patients And Methods: This retrospective cohort study included 24,986 patients newly diagnosed with AS between 2010-2019 without a history of CV diseases, using data from the Korean National Health Insurance Service. CV events were observed through the end of 2021.

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Motor imagery (MI) is one of the popular control paradigms in the non-invasive brain-computer interface (BCI) field. MI-BCI generally requires users to conduct the imagination of movement (e.g.

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  • Increasing evidence shows that frontal channel EEG signals can effectively measure pain using advanced analysis techniques like spectral analysis and phase-amplitude coupling.
  • A study analyzed EEG data from 36 chronic pain patients to find correlations between EEG features (like asymmetry in brain wave power) and clinical pain scores, revealing significant links with certain EEG characteristics.
  • The best machine learning model, Support Vector Regression with a polynomial kernel, successfully predicted pain intensity, highlighting the relevance of complex EEG features in understanding and objectively measuring pain for better clinical intervention.
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  • The study aimed to investigate whether switching gadolinium-based contrast agents (GBCAs) can help reduce the recurrence of acute adverse drug reactions (ADRs) associated with their use during MRI exams.
  • From nearly 239,000 MRI exams between January 2016 and December 2021, 1,042 cases of acute ADRs were identified, with follow-up evaluations showing a recurrence rate of 31.9% among patients who experienced ADRs.
  • Results indicated that patients who switched to different GBCAs had a significantly lower recurrence of ADRs (14.3%) compared to those who remained on the same agent (36.9%), suggesting that changing
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  • - The study aimed to develop and validate a deep learning model that predicts mortality in ischemic stroke patients by incorporating brain diffusion weighted imaging (DWI), apparent diffusion coefficient (ADC), and clinical factors.
  • - Data from a large group of stroke patients was divided into training, validation, and testing sets, with a new integrated model created that combined radiological and clinical data.
  • - The improved integrated model outperformed previous prediction methods, showing strong potential for accurately identifying high-risk patients within one year of their stroke.
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Transfer learning has become an important issue in the brain-computer interface (BCI) field, and studies on subject-to-subject transfer within the same dataset have been performed. However, few studies have been performed on dataset-to-dataset transfer, including paradigm-to-paradigm transfer. In this study, we propose a signal alignment (SA) for P300 event-related potential (ERP) signals that is intuitive, simple, computationally less expensive, and can be used for cross-dataset transfer learning.

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Purpose: To investigate the safety and efficacy of microballoon-occluded transcatheter embolization using n-butyl-2-cyanoacrylate (NBCA) in patients with a single pulmonary arteriovenous malformation (PAVM).

Methods: From November 2017 to November 2020, this retrospective study included 38 previously untreated patients with a single PAVM who underwent microballoon-occluded transcatheter embolization using NBCA. All 38 patients had follow-up that included simple chest radiography and contrast-enhanced chest computed tomography (CT).

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Purpose: To evaluate the safety and long-term clinical outcomes of stent-graft placement to treat hepatic arterial hemorrhage after pancreaticobiliary surgery.

Materials And Methods: Outcomes were retrospectively evaluated in 61 patients (50 men and 11 women; mean age, 63 years) who underwent stent-graft placement for delayed arterial hemorrhage (after 24 hours) after pancreaticobiliary surgery from 2006 to 2023. Bleeding sites included the gastroduodenal artery stump (n = 54), common or proper hepatic artery (n = 5), and right hepatic artery (n = 2).

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Objectives: To evaluate the safety and effectiveness of chemoembolization for hepatocellular carcinoma (HCC) with portal vein tumour thrombosis (PVTT) confined to a monosegment of the liver.

Methods: A total of 192 treatment-naive patients who received chemoembolization between March 2008 and January 2023 as a first-line treatment for locally advanced HCC with PVTT limited to a monosegment were retrospectively analysed. Overall survival (OS) and the identification of pretreatment risk factors related to OS were investigated using Cox regression analysis.

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Objectives: To compare the efficacy of transarterial chemoembolization (TACE) and radiofrequency ablation (RFA) for patients with single small (≤ 3 cm) hepatocellular carcinoma (HCC) and preserved liver function (Child-Pugh class A).

Materials And Methods: The clinical features of treatment-naïve patients who underwent TACE and RFA as first-line treatment were balanced through propensity score matching (PSM). The primary endpoint was overall survival (OS), and the secondary endpoints were local tumor recurrence (LTR) and recurrence-free survival (RFS).

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This study investigates the clinical and pathological outcomes of preoperative balloon-occluded transcatheter arterial chemoembolization (B-TACE) in patients with single hepatocellular carcinoma (HCC). The data are from 25 consecutive patients who underwent sequential treatment of subsegmental B-TACE and hepatic surgery for single HCC. Radiological and pathological evaluation of oily subsegmentectomy, defined as the iodized oil-laden necrotic area that includes the entire HCC and surrounding liver parenchyma, were performed.

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The aim of this study was to determine the local recurrence (LR) rate and identify factors associated with LR in patients who achieve a radiological complete response (CR) after undergoing balloon-occluded transcatheter arterial chemoembolization (B-TACE) for hepatocellular carcinoma (HCC). From November 2017 to September 2021, 60 patients (44 men, 16 women; mean age, 63.5 years; range, 39-82 years) with 72 HCCs (mean diameter, 31 mm; range, 10-50 mm) who underwent subsegmental B-TACE were included in this retrospective study.

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This study aimed to develop and validate an automated machine learning (ML) system that predicts 3-month functional outcomes in acute ischemic stroke (AIS) patients by combining clinical and neuroimaging features. Functional outcomes were categorized as unfavorable (modified Rankin Scale ≥ 3) or not. A clinical model employing optimal clinical features (Model_A), a convolutional neural network model incorporating imaging data (Model_B), and an integrated model combining both imaging and clinical features (Model_C) were developed and tested to predict unfavorable outcomes.

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The centrosome assembles a bipolar spindle for faithful chromosome segregation during mitosis. To prevent the inheritance of DNA damage, the DNA damage response (DDR) triggers programmed spindle multipolarity and concomitant death in mitosis through a poorly understood mechanism. We identified hornerin, which forms a complex with checkpoint kinase 1 (Chk1) and polo-like kinase 1 (Plk1) to mediate phosphorylation at the polo-box domain (PBD) of Plk1, as the link between the DDR and death in mitosis.

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Objective: To investigate the technical feasibility, safety, and efficacy of a long-covered biliary stent in patients with malignant duodenobiliary stricture.

Methods: This retrospective study enrolled 57 consecutive patients (34 men, 23 women; mean age, 64 years; range, 32-85 years) who presented with malignant duodenobiliary stricture between February 2019 and November 2020. All patients were treated with a long (18 or 23 cm)-covered biliary stent.

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The number of corn cultivars that have been improved using genetically modified technology continues to increase. However, concerns about the unintentional release of living-modified organisms (LMOs) into the environment still exist. Specifically, there are cases where LMO crops grown as fodder are released into the environment and form a volunteer plant community, which raises concerns about their safety.

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Objectives: To evaluate the safety and efficacy of chemoembolization in patients with intermediate-stage infiltrative Hepatocellular carcinoma (HCC).

Materials And Methods: This retrospective study evaluated outcomes in treatment-naïve patients who received chemoembolization as first-line treatment for intermediate-stage infiltrative HCC between 2002 and 2022. Of the 2029 treatment-naïve patients who received chemoembolization as first-line treatment for intermediate-stage HCC, 244 (12%) were identified as having the infiltrative type.

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Background And Aim: Portosystemic shunt embolization (PSSE) is a promising treatment for hepatic encephalopathy (HEP) and gastric varix (GV) in cirrhotic patients with a spontaneous portosystemic shunt. However, PSSE may worsen portal hypertension causing hepatorenal syndrome, liver failure, and mortality. This study aimed to develop and validate a prognostic model that helps identify patients with a risk of poor short-term survival after PSSE.

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Wood-decaying fungi are the major decomposers of plant litter. Heavy sequencing efforts on genomes of wood-decaying fungi have recently been made due to the interest in their lignocellulolytic enzymes; however, most parts of their proteomes remain uncharted. We hypothesized that wood-decaying fungi would possess promiscuous enzymes for detoxifying antifungal phytochemicals remaining in the dead plant bodies, which can be useful biocatalysts.

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Objectives: To evaluate the safety and efficacy of TACE and factors predicting survival in patients with advanced hepatocellular carcinoma (HCC) without macrovascular invasion (MVI) or extrahepatic spread (EHS).

Methods: This single-center retrospective study included 236 treatment-naïve patients who underwent TACE as first-line treatment for advanced HCC without MVI or EHS between January 2007 and December 2021.

Results: Following TACE, the median overall survival (OS) was 24 months.

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We aimed to report the incidence and severity of nonionic low-osmolar iodine contrast medium (ICM)-related adverse drug reactions (ADRs) in the Republic of Korea, by analyzing data from our single tertiary institution and published Korean reports, and to determine whether there is a difference in the incidence of ICM-related ADR by ICM generics. A total of 1,161,419 consecutive contrast-enhanced computed tomography (CT) examinations between January 2016 and December 2021 at Asan Medical Center were included. A systematic search of the literature investigating the incidence of ICM-related ADR in the Republic of Korea published up to December 31, 2021 was performed.

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