21 results on '"Jae-Eun, Jeon"'
Search Results
2. Synthesis of NiCo2O4 Nanostructures and Their Electrochemial Properties for Glucose Detection
- Author
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Kyu-bong Jang, Kyoung Ryeol Park, Kang Min Kim, Soong-keun Hyun, Jae-eun Jeon, Young Sik Song, Soo-keun Park, Kyoung-il Moon, Chisung Ahn, Sung-chul Lim, Jaewoong Lee, Jong Cheol Kim, HyukSu Han, and Sungwook Mhin
- Subjects
nickel cobaltite ,enzyme-free ,glucose sensor ,Chemistry ,QD1-999 - Abstract
In this work, we prepared spinel-type NiCo2O4 (NCO) nanopowders as a low-cost and sensitive electrochemical sensor for nonenzymatic glucose detection. A facile and simple chemical bath method to synthesize the NCO nanopowders is demonstrated. The effect of pH and annealing temperature on the formation mechanism of NCO nanoparticles was systematically investigated. Our studies show that different pHs of the precursor solution during synthesis result in different intermediate phases and relating chemical reactions for the formation of NCO nanoparticles. Different morphologies of the NCO depending on pHs are also discussed based on the mechanism of growth. Electrochemical performance of the prepared NCO was characterized towards glucose, which reveals that sensitivity and selectivity of the NCO are significantly related with the final microstructure combined with constituent species with multiple oxidation states in the spinel structure.
- Published
- 2020
- Full Text
- View/download PDF
3. Oxygen Evolution Reaction of Co-Mn-O Electrocatalyst Prepared by Solution Combustion Synthesis
- Author
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Kyoung Ryeol Park, Jae Eun Jeon, Ghulam Ali, Yong-Ho Ko, Jaewoong Lee, HyukSu Han, and Sungwook Mhin
- Subjects
cobalt manganese oxide ,solution combustion synthesis ,electrocatalyst ,oxygen evolution reaction ,water splitting ,Chemical technology ,TP1-1185 ,Chemistry ,QD1-999 - Abstract
High-performance oxygen evolution reaction (OER) electrocatalysts are needed to produce hydrogen for energy generation through a carbon-free route. In this work, the solution combustion synthesis (SCS) method was employed to synthesize mixed phases of Co- and Mn-based oxides, and the relationships between the crystalline structure and the catalytic properties in the mixed phases were established. The mixed phases of Co- and Mn-based oxides shows promising OER properties, such as acceptable overpotential (450 mV for 10 mA∙cm−2) and Tafel slope (35.8 mV∙dec−1), highlighting the use of the mixed phases of Co- and Mn-based oxides as a new efficient catalysts for water splitting. Electronic structure of the mixed phases of Co- and Mn based oxides is studied in detail to give insight for the origin of high catalytic activities. In addition, excellent long-term stability for OER in alkaline media is achieved for the mixed phase of Co- and Mn based oxides.
- Published
- 2019
- Full Text
- View/download PDF
4. Stable and High-Energy-Density Zn-Ion Rechargeable Batteries Based on a MoS2-Coated Zn Anode
- Author
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Junyoung Kim, Sungwook Mhin, Jae Eun Jeon, Sanket Bhoyate, Wonbong Choi, and Kyoung Ryeol Park
- Subjects
Battery (electricity) ,Materials science ,02 engineering and technology ,engineering.material ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Cathode ,0104 chemical sciences ,Anode ,law.invention ,Dendrite (crystal) ,Coating ,Chemical engineering ,law ,Plating ,Electrode ,engineering ,General Materials Science ,0210 nano-technology - Abstract
Recently, aqueous Zn-ion rechargeable batteries have drawn increasing research attention as an alternative energy storage system relative to the current Li-ion batteries due to their intrinsic properties of high safety, low cost, and high theoretical volumetric capacity. Nevertheless, unwanted dendrite growth on the Zn anode and unstable cathode materials restrict their practical application. In this study, a unique 2D MoS2 coating on a Zn anode using an electrochemical deposition method has been developed for preventing dendrite growth and intricate side reactions. The coated MoS2 layer is a vertically oriented structure that makes the flow of Zn ions easy with a uniform electric field distribution on the anode, resulting in a uniform stripping and plating of Zn2+. In addition, the MoS2 coating enhances anodic diffusion of Zn ions and reduces the series resistance as confirmed by EIS analysis and therefore improves the overall battery performance. The full cell assembled with the MoS2-Zn anode and MnO2 cathode exhibits an excellent reversible specific capacity of 638 mAh/g at 0.1 A/g and stable cycle performance over 2000 cycles with no dendrite formation at the Zn electrode. The presented MoS2 coating on Zn is a facile, scalable, and promising technology for practical Zn-ion batteries with a long life cycle and high safety.
- Published
- 2020
5. Effects of Adding Rubus coreanus Miquel Powder on the Quality Characteristics of White Radish Jelly
- Author
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In-Seon Lee and Jae-Eun Jeon
- Subjects
Horticulture ,White (horse) ,biology ,General Earth and Planetary Sciences ,Rubus coreanus ,biology.organism_classification ,Quality characteristics ,General Environmental Science - Published
- 2019
6. Synthesis of NiCo2O4 Nanostructures and Their Electrochemial Properties for Glucose Detection
- Author
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Kyoung-Il Moon, Soo-Keun Park, Jong Cheol Kim, Sungwook Mhin, HyukSu Han, Kyu-Bong Jang, Kyoung Ryeol Park, Young Sik Song, Kang Min Kim, Jaewoong Lee, Soong-Keun Hyun, Jae Eun Jeon, Chisung Ahn, and Sung-Chul Lim
- Subjects
Nanostructure ,Materials science ,General Chemical Engineering ,enzyme-free ,Spinel ,Nanoparticle ,engineering.material ,Electrochemistry ,Microstructure ,Chemical reaction ,Article ,nickel cobaltite ,Electrochemical gas sensor ,lcsh:Chemistry ,lcsh:QD1-999 ,Chemical engineering ,engineering ,General Materials Science ,Selectivity ,glucose sensor - Abstract
In this work, we prepared spinel-type NiCo2O4 (NCO) nanopowders as a low-cost and sensitive electrochemical sensor for nonenzymatic glucose detection. A facile and simple chemical bath method to synthesize the NCO nanopowders is demonstrated. The effect of pH and annealing temperature on the formation mechanism of NCO nanoparticles was systematically investigated. Our studies show that different pHs of the precursor solution during synthesis result in different intermediate phases and relating chemical reactions for the formation of NCO nanoparticles. Different morphologies of the NCO depending on pHs are also discussed based on the mechanism of growth. Electrochemical performance of the prepared NCO was characterized towards glucose, which reveals that sensitivity and selectivity of the NCO are significantly related with the final microstructure combined with constituent species with multiple oxidation states in the spinel structure.
- Published
- 2020
- Full Text
- View/download PDF
7. Stable and High-Energy-Density Zn-Ion Rechargeable Batteries Based on a MoS
- Author
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Sanket, Bhoyate, Sungwook, Mhin, Jae-Eun, Jeon, KyoungRyeol, Park, Junyoung, Kim, and Wonbong, Choi
- Abstract
Recently, aqueous Zn-ion rechargeable batteries have drawn increasing research attention as an alternative energy storage system relative to the current Li-ion batteries due to their intrinsic properties of high safety, low cost, and high theoretical volumetric capacity. Nevertheless, unwanted dendrite growth on the Zn anode and unstable cathode materials restrict their practical application. In this study, a unique 2D MoS
- Published
- 2020
8. Facile Design of Conductive Ag-PDMS Electrodes for Stretchable Electrodes
- Author
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Sehoon Yoo, Jae Eun Jeon, Kwangbo Shim, Sungwook Mhin, Kyoung Ryeol Park, and HyukSu Han
- Subjects
010302 applied physics ,Materials science ,Solid-state physics ,business.industry ,Percolation threshold ,02 engineering and technology ,Bending ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,01 natural sciences ,Electronic, Optical and Magnetic Materials ,Electrical resistivity and conductivity ,0103 physical sciences ,Electrode ,Materials Chemistry ,Optoelectronics ,Electronics ,Electrical and Electronic Engineering ,0210 nano-technology ,business ,Electrical conductor ,Diode - Abstract
Recent technological progress towards the application of wearable electronic devices has prompted the development of flexible electrodes. To date, various technical approaches to improve the mechanical and electrical reliability of flexible electrodes have been reported; however, the transition from lab-scale processing to industrialization is still limited by complex processing steps involved in their preparation. Simple engineering steps are introduced to prepare flexible electrodes fabricated from silver-polydimethylsiloxane (Ag-PDMS) composites for wearable device applications. The electrical properties of the electrodes were investigated under stretching and bending conditions. Also, the effect of different Ag contents in the electrodes on electrical properties was investigated. As increasing the Ag content above 300 wt.%, Ag-PDMS electrodes exhibit electrical conductivity, which is closely related to the percolation threshold for the formation of a 3-D network of Ag in the PDMS matrix. Further increase of Ag content up to 450 wt.% resulted in electrical conductivity about 1000 S/cm, corresponding to an electrical resistivity of 1 mΩ cm. Furthermore, we investigated the electrical resistivity changes when repetitive stretching and bending deformation was applied. Based on the conceptual demonstration of a light-emitting diode circuit using Ag-PDMS electrodes, a simple printable electrode fabrication method can be applied to various stretchable electronic devices.
- Published
- 2018
9. Quality Characteristics and Acceptability of Hotteok with Barley Flour for Development of Representative Foods of Traditional Market
- Author
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In-Seon Lee and Jae-Eun Jeon
- Subjects
business.industry ,Barley flour ,General Earth and Planetary Sciences ,business ,Quality characteristics ,Traditional economy ,General Environmental Science ,Biotechnology - Published
- 2018
10. The effect of pH control on synthesis of Sr doped barium titanate nanopowder by oxalate precipitation method
- Author
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Yu Rim Hong, Kyeong Ryeol Park, Jae Eun Jeon, Sungwook Mhin, HyukSu Han, and Kwang Bo Shim
- Subjects
Materials science ,Inorganic chemistry ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Oxalate ,law.invention ,chemistry.chemical_compound ,Impurity ,law ,Phase (matter) ,Materials Chemistry ,Calcination ,Perovskite (structure) ,Process Chemistry and Technology ,Doping ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Amorphous solid ,chemistry ,Barium titanate ,Ceramics and Composites ,0210 nano-technology ,Nuclear chemistry - Abstract
Sr substituted BaTiO 3 (BST) nanopowders were prepared using oxalate co-precipitation methods. During synthesis, oxygen was applied to the oxalate solution in order to control the oxidation states of Ti. Control of pH in the solution results in different crystalline phases of the powders after calcination; pure perovskite BST was obtained in the powder prepared at pH 3 solution, while perovskite BaTiO 3 (BTO) and impurities were observed in powders prepared at pH 1 solution. Phase transformation from amorphous to crystalline BST during heat treatment was discussed by different analysis technique. Also, morphology and elemental distribution of the pure BST was investigated.
- Published
- 2018
11. The Participation Effect of Study Abroad Program: Mixed Methods Research on College Students’ Career Decision Self-efficacy
- Author
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Yoonjung Shin, Hyun-Seok Shin, Jae-eun Jeon, and Myoungsoon Noh
- Subjects
Self-efficacy ,Medical education ,Multimethodology ,General Medicine ,Career decision ,Study abroad ,Psychology - Published
- 2017
12. Effect of Cu/Fe addition on the microstructures and electrical performances of Ni–Co–Mn oxides
- Author
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Kyoung Ryeol Park, Dong Yurl Yu, HyukSu Han, Jaewoong Lee, Chisung Ahn, Kang Min Kim, Junghwan Bang, Sungwook Mhin, Nuri Oh, and Jae Eun Jeon
- Subjects
Materials science ,Dopant ,Mechanical Engineering ,Thermistor ,Metals and Alloys ,Analytical chemistry ,Electrical stability ,02 engineering and technology ,Electron ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Microstructure ,Thermal conduction ,01 natural sciences ,0104 chemical sciences ,Octahedron ,Mechanics of Materials ,Materials Chemistry ,0210 nano-technology ,Temperature coefficient - Abstract
The reliability of negative temperature coefficient (NTC) thermistors is one of the important factors for the excellent performance of the battery management system in electric vehicles. The electrical properties of the thermistor can be explained by the indirect electron jump between Mn3+ and Mn4+ at the B-sites in a spinel-type thermistor. Additionally, different types of dopants, such as Fe, Cu, Zn, Cr, and Mn, are considered as electrical modifiers that can further improve the electrical properties of the thermistor. For example, Cu is often added to NTC thermistors, occupying the octahedral sites in a spinel-type thermistor, which can play an important role in conduction with the Mn cations. Addition of Fe is also widely used in NTC thermistors owing to its high sensitivity, B constant, and stability. In this study, composition-dependent structural and electrical properties of Cu0.2/Fey-co-doped Ni0.3Mna-x-yCo0.9O4 (NMC) are investigated. Cu/Fe-co-doped NMC shows the R25 and B25/85 constant values of 4490–12730 Ω and 3185–3490 K, respectively, exhibiting a typical ρ–T curve of NTC thermistors. Higher B constant and reliable electrical stability are observed for Cu/Fe-co-doped NMC. Based on the relationship between the cationic oxidation states and electrical properties of Cu/Fe-co-doped NMC, the hopping conduction mechanism is discussed.
- Published
- 2021
13. Synthesis of rod-type Co2.4Mn0.6O4 via oxalate precipitation for water splitting catalysts
- Author
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Seung Hwan Lee, Jaewoong Lee, Yong-Ho Ko, Sungwook Mhin, HyukSu Han, Jeong Ho Ryu, Nuri Oh, Kang Min Kim, Kyoung Ryeol Park, and Jae Eun Jeon
- Subjects
Tafel equation ,Materials science ,Oxygen evolution ,General Physics and Astronomy ,02 engineering and technology ,Surfaces and Interfaces ,General Chemistry ,Overpotential ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Electrocatalyst ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Catalysis ,Chemical engineering ,Water splitting ,Nanorod ,0210 nano-technology ,Hydrogen production - Abstract
Development of a cost-effective oxygen evolution reaction (OER) catalyst for hydrogen production from water has attracted the attention of scientists due to its potential to solve current environmental and energy issues, such as CO2 emissions and depletion of fossil fuels. In this paper, we report a facile synthesis to develop cobalt-manganese-oxide (MnxCo3−xO4, CMO) nanorods via an oxalate precipitation method followed by annealing at different temperatures. Importantly, morphology and surface area of the CMO nanorods, which are directly related to the OER activity, can be precisely controlled by changing annealing temperatures. The CMO nanorods engineered by oxalate precipitation and subsequent heat treatment show promising OER catalytic performance, such as a small overpotential of 365 mV for generating a current density of 10 mA cm−2, a low Tafel slope of 50.6 mV dec−1, and excellent long-term stability in alkaline media. Electrochemical properties combined with materials characterization provide insightful information on the OER mechanism of the CMO nanorods.
- Published
- 2020
14. Oxygen Evolution Reaction of Co-Mn-O Electrocatalyst Prepared by Solution Combustion Synthesis
- Author
-
Jaewoong Lee, Sungwook Mhin, Ghulam Ali, HyukSu Han, Kyoung Ryeol Park, Jae Eun Jeon, and Yong-Ho Ko
- Subjects
Materials science ,Hydrogen ,chemistry.chemical_element ,02 engineering and technology ,Crystal structure ,solution combustion synthesis ,Overpotential ,lcsh:Chemical technology ,010402 general chemistry ,Electrocatalyst ,water splitting ,01 natural sciences ,Catalysis ,lcsh:Chemistry ,electrocatalyst ,lcsh:TP1-1185 ,cobalt manganese oxide ,Physical and Theoretical Chemistry ,Tafel equation ,Oxygen evolution ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,lcsh:QD1-999 ,chemistry ,Chemical engineering ,oxygen evolution reaction ,Water splitting ,0210 nano-technology - Abstract
High-performance oxygen evolution reaction (OER) electrocatalysts are needed to produce hydrogen for energy generation through a carbon-free route. In this work, the solution combustion synthesis (SCS) method was employed to synthesize mixed phases of Co- and Mn-based oxides, and the relationships between the crystalline structure and the catalytic properties in the mixed phases were established. The mixed phases of Co- and Mn-based oxides shows promising OER properties, such as acceptable overpotential (450 mV for 10 mA∙cm&minus, 2) and Tafel slope (35.8 mV∙dec&minus, 1), highlighting the use of the mixed phases of Co- and Mn-based oxides as a new efficient catalysts for water splitting. Electronic structure of the mixed phases of Co- and Mn based oxides is studied in detail to give insight for the origin of high catalytic activities. In addition, excellent long-term stability for OER in alkaline media is achieved for the mixed phase of Co- and Mn based oxides.
- Published
- 2019
15. An Investigation of pH Control on Binder for Investment Casting of Titanium
- Author
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Jae-Eun Jeon, Seul Lee, Bong-Jae Choi, and Young-Jig Kim
- Subjects
Materials science ,chemistry ,Investment casting ,Metallurgy ,Ph control ,chemistry.chemical_element ,Composite material ,Titanium - Published
- 2016
16. Investigation of Hump Degradation by F-N stress for Narrow Width n-MOSFETs with Shallow Trench Isolation (STI)
- Author
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Jae-Eun Jeon, Jae Yong Seo, Hyun-Jung Kim, Sang-keun Lee, Wonshik Lee, Jeong-Eun Seok, and Yeong-Geun Kim
- Subjects
Stress (mechanics) ,Materials science ,Shallow trench isolation ,Degradation (geology) ,Composite material - Abstract
To understand relationship between hump degradation and FN stress, we have investigated FN stress induced damage process in this paper. We have found that sub-threshold hump increase could be caused by edge hole trap along the STI/Si interface. The surprising degradation of double-hump is observed depending on the bias-temperature stress. The FN stress induced transistor hump makes the off leakage current (Ioff) and degradation of memory device performance
- Published
- 2007
17. Evaluation of therapeutic potentials of site-specific PEGylated glucagon-like peptide-1 isomers as a type 2 anti-diabetic treatment: Insulinotropic activity, glucose-stabilizing capability, and proteolytic stability
- Author
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Yu Seok Youn, Hyong Goo Shin, Jae Eun Jeon, Seulki Lee, Kang Choon Lee, and Su Young Chae
- Subjects
Blood Glucose ,Male ,endocrine system ,Drug Evaluation, Preclinical ,Biochemistry ,Dipeptidyl peptidase ,Polyethylene Glycols ,Rats, Sprague-Dawley ,Mice ,Glucagon-Like Peptide 1 ,In vivo ,medicine ,Animals ,Hypoglycemic Agents ,Neprilysin ,Pharmacology ,chemistry.chemical_classification ,Hydrolysis ,Pancreatic islets ,digestive, oral, and skin physiology ,Biological activity ,Glucagon-like peptide-1 ,Rats ,Mice, Inbred C57BL ,medicine.anatomical_structure ,Enzyme ,Diabetes Mellitus, Type 2 ,chemistry ,PEGylation ,hormones, hormone substitutes, and hormone antagonists - Abstract
PEGylation has been considered to be a good biotechnique for improving the therapeutic value of glucagon-like peptide-1 (GLP-1) analogs for the treatment of type 2 diabetes. Despite the attractive anti-diabetic potentials, GLP-1 does not exert its full biological action because of its extremely short life-time in vivo due to rapid proteolytic degradation. Here, the enzyme-resistant mono-PEGylated GLP-1 isomers substituted at Lys(26)- or Lys(34)-amine were prepared through a newly devised site-specific PEGylation process using a maleic anhydride-protection/deprotection method. The therapeutic potentials of these site-specific PEGylated GLP-1 isomers (Lys(26)- or Lys(34)-PEG-GLP-1) along with His(7)-(N-terminus) PEG-GLP-1 were evaluated by examining their insulinotropic activity, glucose-stabilizing capability, and proteolytic stability. Lys(34)-PEG-GLP-1 was found to have the well-preserved insulinotropic activity (93% efficacy versus GLP-1) in isolated rat pancreatic islets. Furthermore, Lys(34)-PEG-GLP-1 showed the most prominent glucose-stabilizing capability, evaluated via an oral glucose tolerance test in db/db mice by considering the following three crucial factors: (i) maximum blood glucose level (BGL), (ii) required time to lower the BGL below 100mg/dl, and (iii) total hypoglycemic degree. Additionally, Lys(34)-PEG-GLP-1 had longer half-lives than the other PEGylated GLP-1s in the dipeptidyl peptidase IV (DPP IV) inhibitor-treated liver or kidney homogenate, and its stability against DPP IV was also comparable to that of Lys(26)-PEG-GLP-1. Taken together, Lys(34)-PEG-GLP-1 displayed the promising characteristics in all evaluations versus His(7)- or Lys(26)-PEG-GLP-1. This site-specific PEGylated GLP-1 analog would have therapeutic usefulness for treating type 2 diabetes on account of the well-preserved insulinotropic activity, the increased proteolytic stability, and thereby the improved glucose-stabilizing capability.
- Published
- 2007
18. New charge trapping phenomena in Recessed-Channel-Array-Transistor (RCAT) after Fowler-Nordheim stress
- Author
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Jae-Eun Jeon, Se Geun Park, Wonshik Lee, Samjin Hwang, and Sung-young Lee
- Subjects
Materials science ,business.industry ,Transistor ,Electrical engineering ,Trapping ,Electronic mail ,law.invention ,Threshold voltage ,law ,Electric field ,MOSFET ,Optoelectronics ,business ,Dram ,Quantum tunnelling - Abstract
We have observed new charge trapping phenomena in sub-80-nm DRAM recessed- channel-array-transistor (RCAT) after Fowler-Nordheim (FN) stress. Gate stack process strongly affected the charge trapping and the trap generating in oxide bulk and interface of RCAT. According to the trapped charges and/or the generated traps after FN stress, the data retention time and writing capabilities of DRAM were dramatically changed. We have summarized the electrical characteristics of RCAT fabricated with different gate stack processes.
- Published
- 2008
19. Reliability acceleration model of stacked ZrO2-Al2O3-ZrO2 MIM capacitor with cylinder type
- Author
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Jae Yong Seo, Won Shik Lee, Hyun-Jung Kim, Jae-Eun Jeon, Jung Eim Seok, Hong Sik Park, and Hyun-Joo Kim
- Subjects
Capacitor ,Acceleration ,Reliability (semiconductor) ,Materials science ,Stack (abstract data type) ,law ,Electronic engineering ,Extrapolation ,Cylinder ,Composite material ,Type (model theory) ,Power law ,law.invention - Abstract
An exact lifetime extrapolation models of ZrO2-Al2O3-ZrO2 (ZAZ) stack capacitor with metal-insulator-metal (MIM) structure was studied in this paper. From the extensive long-term test result (~ 7.5 months) it was found that the power-law model is suitable as a exact lifetime extrapolation model for ZAZ dielectric reliability.
- Published
- 2008
20. Effect of a Meal on Cardiac Performance in Patients with Coronary Artcry Disease
- Author
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Sung-Chul Chae, Bong-Ryul Lee, Jae-Eun Jeon, Dong-Hun Yang, Eui-Ryong Jung, Hunsik Park, Jong-Hyun Hwang, Seung Chul Shin, Eui-Hyun Park, Dong-Hoon Gwak, and Yong-Geun Jo
- Subjects
Meal ,medicine.medical_specialty ,Cardiac output ,business.industry ,Stroke volume ,medicine.disease ,Coronary artery disease ,Angina ,Postprandial ,Internal medicine ,medicine ,Cardiology ,Heart rate variability ,Myocardial infarction ,business - Abstract
Background:It has been well recognized that exercise tolerance and angina threshold in patients with coronary artery disease (CAD) are reduced after a meal. But precise mechanism leading to the postprandial worsening of angina has yet to be adequately defined. This study was undertaken to determine the effect of a mixed meal on cardiac performance and heart rate variability (HRV) in patients with CAD. Methods:24 patients with angina or myocardial infarction were studied. Echocardiographic examination and heart rate variability test were performed in the fasting state and the other 40-60 minutes after a 600–800 kcal mixed meal. Results:In the postprandial state, resting heart rate was significantly increased by 5.2% from 64.8±10.69 beats/min to 68.2±10.2 beats/min (p
- Published
- 2000
21. Differences in Left and Right Ventricular Function between Different Infarct Sites: An ECG-Gated Blood Pool Study
- Author
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Sang-Woo Lee, Kyung Ah Chun, Kyu Bo Lee, Yong Geun Cho, Jae Eun Jeon, Wee Hyun Park, Shung Chull Chae, Byeong-Cheol Ahn, and Jaetae Lee
- Subjects
medicine.medical_specialty ,Ejection fraction ,Ventricular function ,business.industry ,Blood pool ,Infarction ,medicine.disease ,Right ventricular ejection fraction ,Coronary artery disease ,medicine.anatomical_structure ,Ventricle ,Internal medicine ,cardiovascular system ,medicine ,Cardiology ,cardiovascular diseases ,Myocardial infarction ,business - Abstract
Background:Ventricular function is one of the important prognostic factors in patients with coronary artery disease. Among noninvasive approaches for the evaluation of ventricular performance, radionuclide ventr- iculography has shown to be of particular values in the patients with myocardial infarction. We have evaluated ventricular function with ECG-gated blood pool scan (GBPS in patients with myocardial infarction of different locations and compared right and left ventricular functions. Method:Left and right ventricular function was assessed with multigated blood pool scan in 49 patients at 2-3 weeks after acute myocardial infarction (anterior infarction=23, inferior infarction=19, and lateral infarction=7. Left ventricular ejection fraction (LVEF, right ventricular ejection fraction (RVEF, maximal emptying rate, maximal filling rate, phase angle and full width at half maximum (FWHM of phase angles were measured during rest. Results: 1 LVEF was significantly lower in the patients with anterior myocardial infarction (32.2% than that of inferior (46.5%, p
- Published
- 1998
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