Jee Won Chai
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View article: Deep Learning-Based Automatic Muscle Segmentation of the Thigh Using Lower Extremity CT Images
Deep Learning-Based Automatic Muscle Segmentation of the Thigh Using Lower Extremity CT Images Open
Background/Objectives: Sarcopenia and muscle composition have emerged as significant indicators in the fields of musculoskeletal and metabolic research. The objective of this study was to develop and validate a fully automated, deep learni…
View article: Multiscale 3D Whole Joint Cellular and Molecular Mapping Reveals Disease‐Specific Neurovascular Plasticity Underlying the Structure‐Pain Relationship
Multiscale 3D Whole Joint Cellular and Molecular Mapping Reveals Disease‐Specific Neurovascular Plasticity Underlying the Structure‐Pain Relationship Open
Understanding musculoskeletal joints from a 3D multiscale perspective, from molecular to anatomical levels, is essential for resolving the confounding relationships between structure and pain, elucidating mechanisms regulating joint health…
View article: Multiscale 3D whole joint cellular and molecular mapping dissects the relationship between structure and pain
Multiscale 3D whole joint cellular and molecular mapping dissects the relationship between structure and pain Open
Understanding musculoskeletal joints from a 3D multiscale perspective, from molecular to anatomical levels, is essential for resolving the confounding relationships between structure and pain, elucidating the intricate mechanisms regulatin…
View article: Expert-Level Bone Metastasis Detection on CT with Deep Learning Models Considering Lesion Visibility: Multi-Center Development and Evaluation
Expert-Level Bone Metastasis Detection on CT with Deep Learning Models Considering Lesion Visibility: Multi-Center Development and Evaluation Open
View article: An Analysis of Age-Related Body Composition Changes and Metabolic Patterns in Korean Adults Using FDG-PET/CT Health Screening Data
An Analysis of Age-Related Body Composition Changes and Metabolic Patterns in Korean Adults Using FDG-PET/CT Health Screening Data Open
Background: F-18-fluorodeoxyglucose positron emission tomography (FDG-PET)/computed tomography (CT) can be used to measure bone mineral density (BMD), cross-sectional muscle area (CSMA), Hounsfield units (HU) of liver and muscle, subcutane…
View article: Ultrasonographic differential diagnosis of medial elbow pain
Ultrasonographic differential diagnosis of medial elbow pain Open
Medial elbow pain is a common musculoskeletal problem among individuals engaging in repetitive activities. Medial epicondylitis is the predominant cause of this pain. However, other potential causes must be considered as part of the differ…
View article: Re: Casting light on the overlooked trigger point of the interosseous muscles in metatarsalgia: insights and treatment strategies
Re: Casting light on the overlooked trigger point of the interosseous muscles in metatarsalgia: insights and treatment strategies Open
Ultrasonography (renamed from the Journal of Korean Society of Ultrasound in Medicine in January 2014), the official English-language journal of the Korean Society of Ultrasound in Medicine (KSUM), is an international peer-reviewed academi…
View article: The Effect of Scanning Order of Axial T2-Weighted Images on Spinal Stenosis: A Preliminary Study
The Effect of Scanning Order of Axial T2-Weighted Images on Spinal Stenosis: A Preliminary Study Open
View article: Imaging Evaluation of Early and Long-Term Complications Associated with the Postoperative Spine
Imaging Evaluation of Early and Long-Term Complications Associated with the Postoperative Spine Open
As the number of spinal surgeries being performed expands, the number of medical imaging procedures such as radiography, CT, and MRI is also increasing, and the importance of their interpretation is becoming more significant. Herein, we pr…
View article: Automated Detection and Segmentation of Bone Metastases on Spine MRI Using U-Net: A Multicenter Study
Automated Detection and Segmentation of Bone Metastases on Spine MRI Using U-Net: A Multicenter Study Open
The deep learning models proposed for automated segmentation and detection of bone metastases on spinal MRI demonstrated high diagnostic performance.
View article: Effect of Patient’s Positioning on the Grade of Tendinosis and Visible Range of Infraspinatus Tendon on Ultrasound
Effect of Patient’s Positioning on the Grade of Tendinosis and Visible Range of Infraspinatus Tendon on Ultrasound Open
Patient positioning significantly affected the grade of tendinosis and thickness but not the visible range of the IST. The IR position is a feasible position for assessing the IST on US.
View article: Florid Reactive Periostitis of the Clavicle: A Case Report
Florid Reactive Periostitis of the Clavicle: A Case Report Open
Florid reactive periostitis (FRP) is a rare benign fibro-osseous proliferation, occurring mostly in the short tubular bones of hands and rarely in the long tubular bones. We report a surgically confirmed case of FRP involving the clavicle …
View article: A problem-based approach in musculoskeletal ultrasonography: central metatarsalgia
A problem-based approach in musculoskeletal ultrasonography: central metatarsalgia Open
Ultrasonography (US) is a useful diagnostic method that can be easily applied to identify the cause of metatarsalgia. The superficial location of structures in the foot, dynamic capability of US, and the ability to perform direct real-time…
View article: CT Hounsfield unit and histogram analysis for differentiation of recent versus remote vertebral compression fractures
CT Hounsfield unit and histogram analysis for differentiation of recent versus remote vertebral compression fractures Open
Objectives: The purpose of this study was to analyze the intraosseous tissue changes in recent vertebral compression fractures (VCFs) and to differentiate recent from remote VCFs using CT Hounsfield unit histogram analysis (HUHA). Methods:…
View article: A problem-based approach in musculoskeletal ultrasonography: heel pain in adults
A problem-based approach in musculoskeletal ultrasonography: heel pain in adults Open
Musculoskeletal ultrasonography (US) has unique advantages, such as excellent spatial resolution for superficial structures, the capability for dynamic imaging, and the ability for direct correlation and provocation of symptoms. For these …
View article: Readability of extraspinal organs on scout images of lumbar spine MRI according to different protocols
Readability of extraspinal organs on scout images of lumbar spine MRI according to different protocols Open
Background Scout images of lumbar spine MRI often include the extraspinal organs, which are barely included in routine MRI and can be a potential cause of lumbar pain. Purpose To evaluate the readability of scout images for extraspinal org…
View article: Reliable measurements of physiologic ankle syndesmosis widening using dynamic 3D ultrasonography: a preliminary study
Reliable measurements of physiologic ankle syndesmosis widening using dynamic 3D ultrasonography: a preliminary study Open
Using 3D-US, we were able to consistently evaluate the TFCS with good reliability. In a comparison of the two dynamic tests, there was more significant widening of the TFCS in the DFER position than in the WB position.
View article: Intratendinous Injection of Autologous Adipose Tissue-Derived Mesenchymal Stem Cells for the Treatment of Rotator Cuff Disease: A First-In-Human Trial
Intratendinous Injection of Autologous Adipose Tissue-Derived Mesenchymal Stem Cells for the Treatment of Rotator Cuff Disease: A First-In-Human Trial Open
Despite relatively good results of current symptomatic treatments for rotator cuff disease, there has been an unmet need for fundamental treatments to halt or reverse the progress of disease. The purpose of this study was to assess the saf…
View article: Dynamic ultrasonography of the shoulder
Dynamic ultrasonography of the shoulder Open
Ultrasonography (US) is a useful diagnostic method that can be easily applied to identify the cause of shoulder pain. Its low cost, excellent diagnostic accuracy, and capability for dynamic evaluation are also advantages. To assess all pos…
View article: Intra-articular Injection of Mesenchymal Stem Cells for the Treatment of Osteoarthritis of the Knee: A 2-Year Follow-up Study
Intra-articular Injection of Mesenchymal Stem Cells for the Treatment of Osteoarthritis of the Knee: A 2-Year Follow-up Study Open
Background: The intra-articular injection of mesenchymal stem cells (MSCs) into the knee has shown a potential for the treatment of generalized cartilage loss in osteoarthritis (OA). However, there have been few midterm reports with clinic…
View article: Progressive Occipitocervical Subluxation Despite Biologic Agent Therapy in a Patient with Advanced Rheumatoid Arthritis
Progressive Occipitocervical Subluxation Despite Biologic Agent Therapy in a Patient with Advanced Rheumatoid Arthritis Open
View article: Brain ultrasonographic findings of late-onset circulatory dysfunction due to adrenal insufficiency in preterm infants
Brain ultrasonographic findings of late-onset circulatory dysfunction due to adrenal insufficiency in preterm infants Open
LCD due to AI may be associated with the late development of GMH, increased PVE after LCD, and cystic PVL with rapid progression to macrocystic encephalomalacia.
View article: Gemcitabine-induced myositis in a diabetes mellitus patient on hemodialysis
Gemcitabine-induced myositis in a diabetes mellitus patient on hemodialysis Open
View article: Fatty Degeneration and Atrophy of Rotator Cuffs: Comparison of Immediate Postoperative MRI with Preoperative MRI
Fatty Degeneration and Atrophy of Rotator Cuffs: Comparison of Immediate Postoperative MRI with Preoperative MRI Open
View article: Ultrasonographic and Clinical Findings of Inguinal Hernia Containing the Ovary or Omentum in Girls
Ultrasonographic and Clinical Findings of Inguinal Hernia Containing the Ovary or Omentum in Girls Open
Purpose To characterize the ultrasonographic and clinical findings of inguinal hernia containing the ovary or omentum in girls. Materials and Methods We studied 46 girls (49 cases) who were diagnosed with inguinal hernia on ultrasonography…
View article: Quantitative Analysis of Disc Degeneration Using Axial T2 Mapping in a Percutaneous Annular Puncture Model in Rabbits
Quantitative Analysis of Disc Degeneration Using Axial T2 Mapping in a Percutaneous Annular Puncture Model in Rabbits Open
T2 relaxation time measured with axial T2 mapping in degenerated discs is a potential method to assess disc degeneration.
View article: MRI Inter-Reader and Intra-Reader Reliabilities for Assessing Injury Morphology and Posterior Ligamentous Complex Integrity of the Spine According to the Thoracolumbar Injury Classification System and Severity Score
MRI Inter-Reader and Intra-Reader Reliabilities for Assessing Injury Morphology and Posterior Ligamentous Complex Integrity of the Spine According to the Thoracolumbar Injury Classification System and Severity Score Open
The reliability of MRI for assessing thoracolumbar spinal injuries according to the TLICS was moderate for injury morphology and fair to moderate for PLC integrity, which may not be influenced by radiologist' experience.
View article: A New MRI Grading System for Cervical Foraminal Stenosis Based on Axial T2-Weighted Images
A New MRI Grading System for Cervical Foraminal Stenosis Based on Axial T2-Weighted Images Open
The new MRI grading system shows sufficient interobserver and intraobserver agreement to reliably assess cervical NFS.
View article: Fluoroscopy-Guided Intra-Articular Facet Joint Steroid Injection for the Management of Low Back Pain: Therapeutic Effectiveness and Arthrographic Pattern
Fluoroscopy-Guided Intra-Articular Facet Joint Steroid Injection for the Management of Low Back Pain: Therapeutic Effectiveness and Arthrographic Pattern Open
Facet joint pain is defined in a functional capacity as pain originating from a facet joint, and is a common cause of low back pain, with a prevalence rate ranging from 15% to 52% (1-4). Clinical symptoms and radiological findings related …
View article: Central Nervous System Complication due to Pernicious Anemia in a Patient with Rheumatoid Arthritis
Central Nervous System Complication due to Pernicious Anemia in a Patient with Rheumatoid Arthritis Open
Pernicious anemia (PA) is an autoimmune disease characterized by atrophic gastritis and deficiency in intrinsic factor leading to impairment of vitamin B12 absorption in the ileum. Anemia is commonly found in rheumatoid arthritis (RA); how…