Hyung Joong Kim
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View article: Pictorial Review of Rare Pancreatic Tumors and Tumor-like Lesions: Radiologic–Pathologic Correlation
Pictorial Review of Rare Pancreatic Tumors and Tumor-like Lesions: Radiologic–Pathologic Correlation Open
Rare pancreatic tumors and non-neoplastic tumor-like lesions present a diagnostic challenge due to their uncommon occurrence and overlapping imaging characteristics with more prevalent pancreatic neoplasms. Advances in imaging technologies…
View article: Differential diagnosis of thyroid nodules using heterogeneity quantification software on ultrasound images: correlation with the Bethesda system and surgical pathology
Differential diagnosis of thyroid nodules using heterogeneity quantification software on ultrasound images: correlation with the Bethesda system and surgical pathology Open
View article: Comprehensive CT Imaging Analysis of Primary Colorectal Squamous Cell Carcinoma: A Retrospective Study
Comprehensive CT Imaging Analysis of Primary Colorectal Squamous Cell Carcinoma: A Retrospective Study Open
The aim of this study was to evaluate the findings of CT scans in patients with pathologically confirmed primary colorectal squamous-cell carcinoma (SCC). The clinical presentation and CT findings in eight patients with pathologically conf…
View article: Tomography Study and Growth Control of Spiky Gold Nanoparticles
Tomography Study and Growth Control of Spiky Gold Nanoparticles Open
A fundamental understanding of the morphological stability and microstructural characteristics of gold nanoparticles (Au NPs) is crucial for their diverse applications. In this study, spiky Au NPs are prepared by a seed‐mediated approach u…
View article: Thermal Injury to the Subhepatic Appendix Following Percutaneous Ultrasound-Guided Radiofrequency Ablation for Hepatocellular Carcinoma: A Case Report
Thermal Injury to the Subhepatic Appendix Following Percutaneous Ultrasound-Guided Radiofrequency Ablation for Hepatocellular Carcinoma: A Case Report Open
We present the first documented case of a fistula between the treated zone and the appendix after RFA in a patient with HCC. Contrast-enhanced CT and MRI revealed a subcapsular hepatic nodule with image findings of HCC located adjacent to …
View article: Assessment of the Effects of Sodium Nitroprusside Administered Via Intracranial Subdural Catheters on the Cerebral Blood Flow and Lactate Using Dynamic Susceptibility Contrast Magnetic Resonance Imaging and Proton Magnetic Resonance Spectroscopy in a Pig Cardiac Arrest Model
Assessment of the Effects of Sodium Nitroprusside Administered Via Intracranial Subdural Catheters on the Cerebral Blood Flow and Lactate Using Dynamic Susceptibility Contrast Magnetic Resonance Imaging and Proton Magnetic Resonance Spectroscopy in a Pig Cardiac Arrest Model Open
Background Cerebral blood flow (CBF) is impaired in the early phase after return of spontaneous circulation. Sodium nitroprusside (SNP) administration via intracranial subdural catheters improves cerebral cortical microcirculation. We dete…
View article: Evaluation of the Possible Ameliorative Effects of Anemarrhena asphodeloides Extract on Liver Cirrhosis by Combining Biochemical Analysis and Electrical Tissue Conductivity
Evaluation of the Possible Ameliorative Effects of Anemarrhena asphodeloides Extract on Liver Cirrhosis by Combining Biochemical Analysis and Electrical Tissue Conductivity Open
Anemarrhena asphodeloides extract (AAE) has been used for the treatment of inflammatory diseases and its anti-inflammatory effects have been reported. In this feasibility study, the hepato-protective effect of AAE was evaluated in a rat li…
View article: Association between Body Composition Contents and Hepatic Fibrosis in Sarcopenic Obesity
Association between Body Composition Contents and Hepatic Fibrosis in Sarcopenic Obesity Open
It is well established that sarcopenic obesity (SO) is linked to many diseases such as metabolic and non-alcoholic fatty liver diseases, but there is little known about the relationship between SO and hepatic fibrosis progression in chroni…
View article: Estimation of brain tissue response by electrical stimulation in a subject-specific model implemented by conductivity tensor imaging
Estimation of brain tissue response by electrical stimulation in a subject-specific model implemented by conductivity tensor imaging Open
Electrical stimulation such as transcranial direct current stimulation (tDCS) is widely used to treat neuropsychiatric diseases and neurological disorders. Computational modeling is an important approach to understand the mechanisms underl…
View article: Measurement of extracellular volume fraction using magnetic resonance-based conductivity tensor imaging
Measurement of extracellular volume fraction using magnetic resonance-based conductivity tensor imaging Open
Conductivity tensor imaging (CTI) using MRI is an advanced method that can non-invasively measure the electrical properties of living tissues. The contrast of CTI is based on underlying hypothesis about the proportionality between the mobi…
View article: Measurement of extracellular volume fraction using magnetic resonance-based conductivity tensor imaging
Measurement of extracellular volume fraction using magnetic resonance-based conductivity tensor imaging Open
Conductivity tensor imaging (CTI) using MRI is an advanced method that can non-invasively measure the electrical properties of living tissues. The contrast of CTI is based on underlying hypothesis about the proportionality between the mobi…
View article: Effects of Irradiation on Brain Tumors Using MR-Based Electrical Conductivity Imaging
Effects of Irradiation on Brain Tumors Using MR-Based Electrical Conductivity Imaging Open
Ionizing radiation delivers sufficient energy inside the human body to create ions, which kills cancerous tissues either by damaging the DNA directly or by creating charged particles that can damage the DNA. Recent magnetic resonance (MR)-…
View article: Multilayered hydrocarbon ionomer/PTFE composite electrolytes with enhanced performance for energy conversion devices
Multilayered hydrocarbon ionomer/PTFE composite electrolytes with enhanced performance for energy conversion devices Open
A new multilayered composite membrane was prepared by impregnating a sulfonated poly(arylene ether sulfone) (SPAES) ionomer into a porous polytetrafluoroethylene (PTFE) substrate for application in proton exchange membrane fuel cells (PEMF…
View article: International Conference on Bioelectromagnetism, Electrical Bioimpedance, and Electrical Impedance Tomography 2022
International Conference on Bioelectromagnetism, Electrical Bioimpedance, and Electrical Impedance Tomography 2022 Open
This document is the collection of papers accepted for presentation at the International Conference on Bioelectromagnetism, Electrical Bioimpedance, and Electrical Impedance Tomography 2022 (ICBEM-ICEBI-EIT 2022), Seoul, South Korea. Each…
View article: Effects of Sodium Nitroprusside Administered Via a Subdural Intracranial Catheter on the Microcirculation, Oxygenation, and Electrocortical Activity of the Cerebral Cortex in a Pig Cardiac Arrest Model
Effects of Sodium Nitroprusside Administered Via a Subdural Intracranial Catheter on the Microcirculation, Oxygenation, and Electrocortical Activity of the Cerebral Cortex in a Pig Cardiac Arrest Model Open
Background Postischemic cerebral hypoperfusion has been indicated as an important contributing factor to secondary cerebral injury after cardiac arrest. We evaluated the effects of sodium nitroprusside administered via a subdural intracran…
View article: Regional Analysis of Liver Surface Nodularity in a Single Axial <scp>MR</scp> Image for Staging Liver Fibrosis
Regional Analysis of Liver Surface Nodularity in a Single Axial <span>MR</span> Image for Staging Liver Fibrosis Open
Background The assessment of liver surface nodularity (LSN) for staging hepatic fibrosis is restricted in clinical practice because it requires customized software and time‐consuming procedures. A simplified method to estimate LSN score ma…
View article: Controlling hydrophilic channel alignment of perfluorinated sulfonic acid membranes via biaxial drawing for high performance and durable polymer electrolyte membrane water electrolysis
Controlling hydrophilic channel alignment of perfluorinated sulfonic acid membranes via biaxial drawing for high performance and durable polymer electrolyte membrane water electrolysis Open
This study focuses on improving performance and durability of perfluorinated sulfonic acid (PFSA) membranes for polymer electrolyte membrane water electrolysis by controlling the membrane microstructure. To replace the highly gas permeable…
View article: Image-Based Evaluation of Irradiation Effects in Brain Tissues by Measuring Absolute Electrical Conductivity Using MRI
Image-Based Evaluation of Irradiation Effects in Brain Tissues by Measuring Absolute Electrical Conductivity Using MRI Open
Radiation-induced injury is damage to normal tissues caused by unintentional exposure to ionizing radiation. Image-based evaluation of tissue damage by irradiation has an advantage for the early assessment of therapeutic effects by providi…
View article: Comparison of Five Conductivity Tensor Models and Image Reconstruction Methods Using MRI
Comparison of Five Conductivity Tensor Models and Image Reconstruction Methods Using MRI Open
Imaging of the electrical conductivity distribution inside the human body has been investigated for numerous clinical applications. The conductivity tensors of biological tissue have been obtained from water diffusion tensors by applying s…
View article: Cross-Linked Composite Gel Polymer Electrolyte Based on an H-Shaped Poly(ethylene oxide)–Poly(propylene oxide) Tetrablock Copolymer with SiO<sub>2</sub> Nanoparticles for Solid-State Supercapacitor Applications
Cross-Linked Composite Gel Polymer Electrolyte Based on an H-Shaped Poly(ethylene oxide)–Poly(propylene oxide) Tetrablock Copolymer with SiO<sub>2</sub> Nanoparticles for Solid-State Supercapacitor Applications Open
Achieving high ionic conductivity, wide voltage window, and good mechanical strength in a single material remains a key challenge for polymer-based electrolytes for use in solid-state supercapacitors (SCs). Herein, we report cross-linked c…
View article: High-frequency conductivity at Larmor-frequency in human brain using moving local window multilayer perceptron neural network
High-frequency conductivity at Larmor-frequency in human brain using moving local window multilayer perceptron neural network Open
Magnetic resonance electrical properties tomography (MREPT) aims to visualize the internal high-frequency conductivity distribution at Larmor frequency using the B1 transceive phase data. From the magnetic field perturbation by the electri…
View article: Decomposition of high-frequency electrical conductivity into extracellular and intracellular compartments based on two-compartment model using low-to-high multi-b diffusion MRI
Decomposition of high-frequency electrical conductivity into extracellular and intracellular compartments based on two-compartment model using low-to-high multi-b diffusion MRI Open
View article: Identification of Brain Damage after Seizures Using an MR-Based Electrical Conductivity Imaging Method
Identification of Brain Damage after Seizures Using an MR-Based Electrical Conductivity Imaging Method Open
Previous imaging studies have shown the morphological malformation and the alterations of ionic mobility, water contents, electrical properties, or metabolites in seizure brains. Magnetic resonance electrical properties tomography (MREPT) …
View article: High‐frequency electrical properties tomography at 9.4T as a novel contrast mechanism for brain tumors
High‐frequency electrical properties tomography at 9.4T as a novel contrast mechanism for brain tumors Open
Purpose To establish high‐frequency magnetic resonance electrical properties tomography (MREPT) as a novel contrast mechanism for the assessment of glioblastomas using a rat brain tumor model. Methods Six F98 intracranial tumor bearing rat…
View article: Decomposition of High-Frequency Electrical Conductivity into Extracellular and Intracellular Compartments based on Two-Compartment Model using Low-to-High Multi-b Diffusion MRI
Decomposition of High-Frequency Electrical Conductivity into Extracellular and Intracellular Compartments based on Two-Compartment Model using Low-to-High Multi-b Diffusion MRI Open
Background : As an object's electrical passive property, the electrical conductivity is proportional to the mobility and concentration of charged carriers that reflect the brain micro-structures. The measured Mb-DWI data by controlling the…
View article: Longitudinal Bone Growth Stimulating Effect of Allium macrostemon in Adolescent Female Rats
Longitudinal Bone Growth Stimulating Effect of Allium macrostemon in Adolescent Female Rats Open
Allium macrostemon (AM) may affect bone growth by regulating bone formation and resorption. To examine the effect of AM on bone growth, 48 rats were divided into four administration groups in which either distilled water, AM (100 and 300 m…
View article: Evaluation of electrical conductivity and anisotropy in muscle tissues using conductivity tensor imaging (CTI)
Evaluation of electrical conductivity and anisotropy in muscle tissues using conductivity tensor imaging (CTI) Open
Low-frequency conductivity of an anisotropic tissue is associated with its cellular structure. Imaging of the conductivity tensor inside the human body could prove invaluable to analyses of interactions between electromagnetic fields and b…
View article: Low-frequency dominant electrical conductivity imaging of in vivo human brain using high-frequency conductivity at Larmor-frequency and spherical mean diffusivity without external injection current
Low-frequency dominant electrical conductivity imaging of in vivo human brain using high-frequency conductivity at Larmor-frequency and spherical mean diffusivity without external injection current Open
Diffusion weighted imaging based on random Brownian motion of water molecules within a voxel provides information on the micro-structure of biological tissues through water molecule diffusivity. As the electrical conductivity is primarily …
View article: Validation of conductivity tensor imaging using giant vesicle suspensions with different ion mobilities
Validation of conductivity tensor imaging using giant vesicle suspensions with different ion mobilities Open
View article: Extracellular electrical conductivity property imaging by decomposition of high-frequency conductivity at Larmor-frequency using multi-b-value diffusion-weighted imaging
Extracellular electrical conductivity property imaging by decomposition of high-frequency conductivity at Larmor-frequency using multi-b-value diffusion-weighted imaging Open
Magnetic resonance electrical properties tomography (MREPT) uses the B1 mapping technique to provide the high-frequency conductivity distribution at Larmor frequency that simultaneously reflects the intracellular and extracellular effects.…