Publications by authors named "Chaehun Lim"

Article Synopsis
  • - A new plasma-assisted sol-gel synthesis method was developed to create highly crystalline sulfur and carbon co-doped titanium dioxide (SC-TiO) photocatalysts quickly at room temperature and atmospheric pressure.
  • - This process involves underwater plasma that generates high-energy species, resulting in the formation of SC-TiO with improved crystallinity and surface area through the incorporation of sulfur and carbon into the TiO structure.
  • - The resulting SC-TiO photocatalysts exhibited a significantly wider optical absorption range and better efficiency in degrading tetracycline antibiotics under solar light, showcasing their potential for effective water purification applications.
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In this study, multi-walled carbon nanotubes (MWCNTs) were modified by thermal fluorination to improve dispersibility between MWCNTs and LiTiO (LTO) and were used as additives to compensate for the disadvantages of LTO anode materials with low electronic conductivity. The degree of fluorination of the MWCNTs was controlled by modifying the reaction time at constant fluorination temperature; the clear structure and surface functional group changes in the MWCNTs due to the degree of fluorination were determined. In addition, the homogeneous dispersion in the LTO was improved due to the strong electronegativity of fluorine.

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Purpose: To assess the usefulness of simple axial bi-dimensional diameters of pericardial fat tissues at low-dose chest CT, in correlation with metabolic parameters in predicting metabolic syndrome.

Materials And Methods: Subjects were 373 asymptomatic individuals who performed both low-dose chest CT and abdominal fat CT for medical check-up. Maximum bi-dimensional axial diameters of paracardial fats at right (RPF) and left (LPF) cardiophrenic angle portions, and epicardial fats around right (REF) and left (LEF) coronary arteries, and coronary sinus (SEF) were measured.

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Aim: The study aims to determine the number of needle pass in the CT-guided core needle biopsy (CNB) in making a diagnosis of pulmonary malignancy.

Materials And Methods: A total of 434 CNB records were retrospectively reviewed. The specimen obtained from each needle pass was put in a formalin container and then labelled for separate histopathological reporting.

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Article Synopsis
  • The study aimed to evaluate how effective dual-energy perfusion computed tomography (CT) is at predicting lung function after surgery in patients undergoing lung resection.
  • Fifty-one patients were examined using dual-energy CT and perfusion scintigraphy, along with pulmonary function tests before and six months after surgery to assess their lung performance.
  • Results showed that dual-energy CT provided a more accurate prediction of postoperative lung function compared to perfusion scintigraphy, with comparable percentages of error for both methods.
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Objective: To assess causes, incidence and patterns of perfusion defects (PDs) on dual-energy perfusion CT angiography (DECTA) in clinically suspected acute pulmonary thromboembolisms (PTE).

Materials And Methods: Consecutive 537 patients who underwent DECTA for suspicion of PTE were retrospectively reviewed. After excluding patients with possible PTE or unsatisfactory perfusion map quality, 299 patients with 1697 lobes were included.

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Objectives: We evaluated CT findings and their prognostic value in non-neutropenic transplant recipients with invasive pulmonary aspergillosis (IPA) compared with neutropenic patients with IPA.

Methods: All adult patients during a 27-month who met the criteria for proven or probable IPA according to the 2008 EORTC/MSG criteria were retrospectively enrolled. Initial CT findings were reviewed by two radiologists blinded to the patients' demographics and clinical outcomes.

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Objectives: To know whether contrast-enhanced dual-energy computed tomography angiography (DECTA) can be used for simultaneous assessment of emphysema quantification and regional perfusion evaluation.

Materials And Methods: We assessed 27 patients who had pulmonary emphysema and no pulmonary embolism on visual assessment of CT images, among 584 consecutive patients who underwent DECTA for the evaluation of pulmonary embolism. Virtual noncontrast (VNC) images were generated by modifying the "Liver VNC" application in a dedicated workstation.

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Objective: To retrospectively analyze computed tomography (CT) and clinical findings of patients with subcutaneous panniculitis-like T-cell lymphoma (SPTCL).

Materials And Methods: The CT findings were retrospectively assessed in 8 patients (6 men, 2 women; age range, 23-60 years; mean age, 39.8 years) with pathologically proven SPTCL.

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Bronchogenic cysts are classified as congenital bronchopulmonary foregut malformations. It is very rare for bronchogenic cysts to occur within the heart. A 59-year-old woman had a cardiac mass which was detected incidentally during a CT examination.

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Osteoid osteoma is a common skeletal neoplasm with distinctive histologic abnormalities that consist of a central core of vascular osteoid tissue and a peripheral sclerotic zone. We report a case of intense F-18 FDG uptake in the nidus of cortical osteoid osteoma of the distal metaphysis of the right tibia.

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Objective: To correlate MR and CT discography findings with pain response at provocative discography in patients with discogenic back pain.

Materials And Methods: Forty-seven patients aged 25-54 years who underwent MR imaging and subsequent CT discography (97 discs) were included in this study. MR images were retrospectively evaluated regarding disc degeneration, endplate abnormalities, facet joint osteoarthritis, and high intensity zone.

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