이승현 교수

Purpose To determine whether arterial spin-labeling (ASL) magnetic resonance (MR) imaging could be used to identify changes in cerebral blood flow (CBF), collateral blood flow, and anastomosis site patency after revascularization in patients with moyamoya disease. Materials and Methods This retrospective study was conducted in 145 patients with moyamoya disease who underwent middle cerebral artery (MCA)-superficial temporal artery anastomosis. Preoperative, early postoperative, and late postoper

In this paper, we developed a versatile ionic field effect transistor (IFET) which has an ambipolar function for manipulating molecules regardless of their polarity and can be operated at a wide range of electrolytic concentrations (10(-5) M-1 M). The IFET has circular nanochannels radially covered by gate electrodes, called "all-around-gate", with an aluminum oxide (Al2O3) oxide layer of a near-zero surface charge. Experimental and numerical validations were conducted for characterizing the IFE

Four species of the subgenus Aethina Erichson sensu stricto are recognized in Korea, including two species newto Korea: Aethina (s.str) aeneipennis, and the small hive beetle (SHB), A. (s.str) tumida. This is the first report of the small hive beetle in the Far Eastern Asia,which has been recently spreading worldwide, causing big economic loss in beekeeping industry. Comments on external and genital structures, brief biology, illustrations of the genitalia of both male and female, and a key to s

<div class="section abstract"><div class="htmlview paragraph">In this study, a correlation between the maximum heat release rate and vibrations from a diesel engine block was derived, and a methodology to determine the maximum heat release rate is presented. To investigate and analyze the correlation, an engine test and an actual road vehicle test were performed using a 1.6-L diesel engine. By varying the engine speed, load and main injection timing, the vibration signals from the en

Abstract Nitidulidae includes some 4500 species under 350 genera in ten subfamilies, making it the most species‐rich family in Cucujoidea. In this study, we present a phylogeny of the family based on five gene regions (COI, 28s, CAD, H3, Wingless) for 73 ingroup taxa representing nine of the ten currently recognized subfamilies of Nitidulidae, including the enigmatic subfamily Calonecrinae. Our results are consistent with a prior molecular study that recovered (i) paraphyletic Nitidulinae with t

Our study demonstrated that a deep learning model for image conversion can improve the reproducibility of radiomics features across various CT protocols, reconstruction kernels, and CT scanners.

The liver stiffness values on 2D-SWE can be affected by both fibrosis and necroinflammatory grade and can provide excellent diagnostic performance in evaluating the fibrosis stage in various pediatric liver diseases. However, clinicians should be mindful of potential confounders, such as necroinflammatory activity or transaminase level, when performing 2D-SWE measurements for liver fibrosis staging.

These results suggest that L5-specific prefrontal dysfunction, especially hyperexcitability, underlies both the pathophysiology and the lithium-mediated amelioration of neurobehavioral phenotypes in adult Cyfip2^+/- mice, which can be implicated in CYFIP2-associated brain disorders. ANN NEUROL 2020;88:526-543.

Pulmonary metastases from osteosarcoma could be differentiated from non-metastases by using computerized texture analysis. Higher mean attenuation and larger diameter were significant predictors for pulmonary metastases, while higher mean attenuation was a significant predictor for small non-calcified pulmonary metastases.