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The Efficacy of Mycophenolate Mofetil in Remission Maintenance Therapy for Microscopic Polyangiitis and Granulomatosis with Polyangiitis

Pyo JY, Lee LE, Ahn SS, Song JJ, Park YB, Lee SW

Purpose: The present study compared the efficacy of mycophenolate mofetil (MMF) with that of azathioprine (AZA) in Korean patients with microscopic polyangiitis (MPA) and granulomatosis with polyangiitis (GPA). Materials and Methods:...
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Male Sex Is a Significant Predictor of All-cause Mortality in Patients with Antineutrophil Cytoplasmic Antibodyassociated Vasculitis

Kwon HC, Pyo JY, Lee LE, Ahn SS, Song JJ, Park YB, Lee SW

Background: We investigated and compared the initial clinical features at diagnosis and the poor outcomes during follow-up in Korean patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) based on sex. Methods:...
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Total Haemolytic Complement Activity at Diagnosis as an Indicator of the Baseline Activity of Antineutrophil Cytoplasmic Antibody-associated Vasculitis

Pyo JY, Lee LE, Ahn SS, Song JJ, Park YB, Lee SW

Objective: The total haemolytic complement activity (CH50) assay evaluates the functioning of the complement system. Accumulating evidence indicates that the activation of the complement system plays a critical role in...
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Serological Biomarkers and Indices for the Current Activity and Prognosis of ANCA-Associated Vasculitis: Experience in a Single Centre in Korea

Ahn SS, Park YB, Lee SW

Small vessel vasculitis is composed of two types of vasculitis based on immune-complex deposits, immune-complex vasculitis and antineutrophil cytoplasmic antibody-associated vasculitis (AAV) according to the 2012 Chapel Hill Consensus Conferences...
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Soluble Lectin-Like Oxidized Low-Density Lipoprotein Receptor 1 Is Inversely Correlated with the Activity of ANCA-Associated Vasculitis

Yoon T, Ahn SS, Song JJ, Park YB, Lee SW

Lectin-like oxidized low-density lipoprotein (LDL) receptor 1 (LOX1) binds to oxidized LDL, which is associated with inflammation in various vascular disorders. Here, we aimed to investigate the potential of soluble...
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Comparison of Diagnostic Performance of Two-Dimensionaland Three-Dimensional Fractal Dimension and LacunarityAnalyses for Predicting the Meningioma Grade

Kim S, Park YW, Park SH, Ahn SS, Chang JH, Kim SH, Lee SK

Background : To compare the diagnostic performance of two-dimensional (2D) and three-dimensional (3D) fractal dimension (FD) and lacunarity features from MRI for predicting the meningioma grade. Methods : This retrospective study included...
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Quality Reporting of Radiomics Analysis in Mild Cognitive Impairment and Alzheimer’s Disease: A Roadmap for Moving Forward

Won SY, Park YW, Park M, Ahn SS, Kim J, Lee SK

Objective: To evaluate radiomics analysis in studies on mild cognitive impairment (MCI) and Alzheimer’s disease (AD) using a radiomics quality score (RQS) system to establish a roadmap for further improvement...
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Contrast-Enhanced High-Resolution Intracranial Vessel Wall MRI with Compressed Sensing: Comparison with Conventional T1 Volumetric Isotropic Turbo Spin Echo Acquisition Sequence

Park CJ, Cha J, Ahn SS, Choi HS, Kim YD, Nam HS, Heo JH, Lee SK

Objective: Compressed sensing (CS) has gained wide interest since it accelerates MRI acquisition. We aimed to compare the 3D post-contrast T1-weighted volumetric isotropic turbo spin echo acquisition (VISTA) with CS...
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Lipid Profiles in Anti-neutrophil Cytoplasmic Antibody-associated Vasculitis: A Cross-sectional Analysis

Ahn SS, Yoon T, Song JJ, Park YB, Lee SW

Objective. Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is an autoimmune disease (AID) characterised by necrotising intravascular inflammation. Growing evidence suggests that immune system triggers altered lipid metabolism in AIDs. We...
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Squamous Cell Carcinoma and Lymphoma of the Oropharynx: Differentiation Using a Radiomics Approach

Bae S, Choi YS, Sohn B, Ahn SS, Lee SK, Yang J, Kim J

The purpose of this study was to evaluate the diagnostic performance of magnetic resonance (MR) radiomics-based machine learning algorithms in differentiating squamous cell carcinoma (SCC) from lymphoma in the oropharynx....
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Radiomics MRI Phenotyping with Machine Learning to Predict the Grade of Lower-Grade Gliomas: A Study Focused on Nonenhancing Tumors

Park YW, Choi YS, Ahn SS, Chang JH, Kim SH, Lee SK

OBJECTIVE: To assess whether radiomics features derived from multiparametric MRI can predict the tumor grade of lower-grade gliomas (LGGs; World Health Organization grade II and grade III) and the nonenhancing...
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Controlling Nutritional Status Score is Associated with All-Cause Mortality in Patients with Antineutrophil Cytoplasmic Antibody-Associated Vasculitis

Ahn SS, Jung SM, Song JJ, Park YB, Lee SW

PURPOSE: The controlling nutritional status (CONUT) score was developed to detect undernutrition in patients. Here, we investigated whether the CONUT score estimated at diagnosis could help predict poor outcomes [all-cause...
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C-Reactive Protein to Serum Albumin Ratio Is an Independent Predictor of All-Cause Mortality in Patients with ANCA-Associated Vasculitis

Moon JS, Ahn SS, Park YB, Lee SK, Lee SW

PURPOSE: We investigated whether C-reactive protein (CRP) to serum albumin ratio (CAR) could be an independent predictor of all-cause mortality in patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). MATERIALS AND...
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Comparison of 3D Volumetric Subtraction Technique and 2D Dynamic Contrast Enhancement Technique in the Evaluation of Contrast Enhancement for Diagnosing Cushing's Disease

Park YW, Kim HY, Lee HJ, Kim SH, Kim SH, Ahn SS, Kim J, Lee SK

PURPOSE: The purpose of this study is to compare the performance of the T1 3D subtraction technique and the conventional 2D dynamic contrast enhancement (DCE) technique in diagnosing Cushing's disease. MATERIALS...
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Safety of Tocilizumab in Rheumatoid Arthritis Patients with Resolved Hepatitis B Virus Infection: Data from Real-World Experience

Ahn SS, Jung SM, Song JJ, Park YB, Park JY, Lee SW

To investigate whether the use of IL-6 receptor antagonist (tocilizumab) might be associated with hepatitis B virus (HBV) reactivation in rheumatoid arthritis (RA) patients, particularly in those with resolved HBV...
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Delta Neutrophil Index Is Associated with Vasculitis Activity and Risk of Relapse in ANCA-Associated Vasculitis

Yoo J, Ahn SS, Jung SM, Song JJ, Park YB, Lee SW

PURPOSE: Delta neutrophil index (DNI) represents the immature granulocytes count associated with neutrophil-consumption. We investigated whether DNI might be associated with Birmingham vasculitis activity score (BVAS) at diagnosis and could...
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Hypofractionated Re-irradiation after Maximal Surgical Resection for Recurrent Glioblastoma: Therapeutic Adequacy and Its Prognosticators of Survival

Lee J, Ahn SS, Chang JH, Suh CO

PURPOSE: To evaluate the adequacy of retreatment, including hypofractionated re-irradiation (HFReRT), after surgery for recurrent glioblastoma (GBM) and related prognosticators of outcomes. MATERIALS AND METHODS: From 2011 to 2014, 25 consecutive...
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The Presence of Anti-ribonucleoprotein at Diagnosis Is Associated with the Flare during the First Follow-up Year in Korean Patients with Systemic Lupus Erythematosus

Kim DS, Pyo JY, Byun SJ, Ahn SS, Song J, Park YB, Lee SK, Lee SW

OBJECTIVE: The aim of this study was to examine whether the presence of anti-ribonucleoprotein (anti-RNP) antibodies at diagnosis is associated with systemic lupus erythematosus (SLE) flares in newly diagnosed patients...
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Radiologic Findings and Risk Factors of Adjacent Segment Degeneration after Anterior Cervical Discectomy and Fusion : A Retrospective Matched Cohort Study with 3-Year Follow-Up Using MRI

Ahn SS, So WS, Ku MG, Kim SH, Kim DW, Lee BH

OBJECTIVE: The purpose of this study was to figure out the radiologic findings and risk factors related to adjacent segment degeneration (ASD) after anterior cervical discectomy and fusion (ACDF) using...
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Brain meningioma in a patient with systemic lupus erythematosus

Yoo BW, Ahn SS, Pyo JY, Byun SJ, Song JJ, Park YB, Lee SK, Song JS, Lee SW

Brain meningioma, the most common benign brain tumor, has been reported to account for 13-26% of all intracranial tumors, with a crude incidence rate of 2.3 per 100,000 persons for...
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