Wan Jae Yi
Sungkyunkwan University · Medicine
About the Lab
Professor Wan Jae Yi's research lab specializes in diagnostic radiology and biomedical imaging, with a focus on developing advanced imaging agents and techniques for early detection and precise diagnosis of gastrointestinal and urological diseases. The lab investigates pH-responsive nanomaterials for targeted MRI contrast imaging, particularly for acidic pathological environments such as tumors, and explores the radiological features of various neoplastic and inflammatory conditions, including cholangiocarcinoma, gallbladder polyps, and eosinophil-related hepatic lesions. The team also evaluates clinical interventional procedures, such as emergency percutaneous nephrostomy, to improve patient outcomes in urological emergencies. Their work bridges molecular imaging, radiological diagnostics, and clinical interventional radiology to enhance disease detection and management.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15Most cholangiocarcinomas are ductal adenocarcinomas that arise from both intra- and extrahepatic bile duct epithelium, and their typical growth pattern can be classified as exophytic, infiltrative, polypoid, or a combination of these. Those of unusual histologic type (eg, mucin-hypersecreting cholangiocarcinoma, squamous adenocarcinoma, biliary cystadenocarcinoma, and mucinous carcinoma) show a growth pattern different from that of the typical ones (ie, ductal). Cholangiocarcinomas frequently de
PURPOSE: Percutaneous nephrostomy is a well-established standardized procedure in the management of patients with various urologic problems. The goal of this study was to evaluate the effectiveness and safety of percutaneous nephrostomy in an emergency setting. PATIENTS AND METHODS: Emergency percutaneous nephrostomy was performed in 160 patients with ages ranging from 2 to 89 years (mean, 52 years). Access to the kidney was planned and achieved with C-arm fluoroscopic guidance. RESULTS: The ini
A facile and powerful pH-responsive polymeric micelle encapsulates Fe3O4 nanoparticles as an acid-targeting MRI contrast agent for pathologic diagnosis. This MRI probe remains in a micellar state in the physiological environment whereas it can be dissolved in acidic pathological areas. More biomedical applications will be possible owing to its unique ability to target an acidic pathologic environment.
The aim of this study was to estimate the distance Mississippi patients must travel to access hospital-based emergency rooms (ERs) and to determine whether an association exists between geographic distance and ER utilization. To that end, great circle distances between Census Block Group Centroid Points and 89 hospitals with emergency departments were calculated for the State of Mississippi. Data on the socio-demographic characteristics of each block group came from the 2000 US Census data. Logi
Size bigger than 1.5 cm, sessile shape, and perception on unenhanced images are the main factors that differentiate neoplastic from nonneoplastic gallbladder polyps 1 cm or bigger.
Foci of eosinophil-related necrosis cause focal hepatic lesions of varying size, shape, and number on helical CT and sonography. The number and extent of these foci were closely correlated to eosinophil counts in the peripheral blood.
OBJECTIVE: To compare the results of multiphase helical computed tomography and power Doppler ultrasonography with a microbubble contrast agent in the assessment of the therapeutic response to radio frequency ablation in hepatocellular carcinoma. METHODS: In 66 patients with 73 nodular hepatocellular carcinomas ranging from 1.0 to 4.0 cm (mean, 2.6 cm) in diameter, contrast-enhanced power Doppler ultrasonography was performed after intravenous bolus injection of a galactose-based microbubble con
Research Areas
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