A5004015589- Gastric Cancer Management and Outcomes
- Gastrointestinal Tumor Research and Treatment
- Esophageal and GI Pathology
- Metastasis and carcinoma case studies
- Helicobacter pylori-related gastroenterology studies
- Gastrointestinal disorders and treatments
- Gallbladder and Bile Duct Disorders
- Pancreatic and Hepatic Oncology Research
- Gastroesophageal reflux and treatments
- Gastrointestinal Bleeding Diagnosis and Treatment
- Liver Disease Diagnosis and Treatment
- Colorectal Cancer Surgical Treatments
- Esophageal Cancer Research and Treatment
- Hepatitis B Virus Studies
- Pediatric Hepatobiliary Diseases and Treatments
- Colorectal Cancer Screening and Detection
- Biliary and Gastrointestinal Fistulas
- Iterative Learning Control Systems
- Hepatocellular Carcinoma Treatment and Prognosis
- Tracheal and airway disorders
- Sensorless Control of Electric Motors
- Robotics and Automated Systems
- Electric Motor Design and Analysis
- Microgrid Control and Optimization
- Soft Robotics and Applications
Ajou University
2016-2025
Korea Electronics Technology Institute
2011-2024
Agostino Gemelli University Polyclinic
2022
Institut de Recherche contre les Cancers de l’Appareil Digestif
2022
Agence Nationale de la Recherche
2022
Institut de Chirurgie Guidée par l'Image
2019-2022
Korea University
2022
Ajou University Hospital
2011-2021
Robotics Research (United States)
2010
Hanyang University
2006
This study aimed to evaluate the risk of development hepatocellular carcinoma (HCC) according underlying liver status and virological response (VR) entecavir (ETV) in chronic hepatitis B patients with cirrhosis. Procollagen III N-terminal peptide (PIIINP) concentration during ETV treatment its association HCC were also evaluated.A total 306 clinically diagnosed cirrhosis treated for ≥12 months subsequently followed up occurrence (median follow-up duration: 37.0 months). Patients who...
Objective. Covered self-expandable metal stents (SEMSs) are increasingly used as alternatives to uncovered SEMSs for the palliation of inoperable malignant distal biliary obstruction counteract tumor ingrowth. We aimed compare outcomes partially covered and with identical mesh structures anti-migration properties, such low axial force flared ends. Materials methods. One hundred three patients who were diagnosed between January 2006 August 2013 randomly assigned either (n = 51) or 52) SEMS...
Objective. Although still controversial, bilateral stenting may be the best option for palliative drainage of malignant hilar biliary obstruction. The aim our study was to evaluate technical and clinical efficacies endoscopic metal using a Y-stent management Material methods. This prospective, uncontrolled included 30 consecutive patients with unresectable strictures in whom we intended perform stent-in-stent deployment Y-stent. After across stricture, conventional stent inserted...
Abstract Background Endoscopic sphincterotomy (EST) combined with large-balloon dilation (LBD) has been proposed as an alternative to manage large bile duct stones. However, recent reports indicate that LBD without EST may be safe and effective in this setting. Methods One hundred thirty-one patients common (CBD) stones 12 mm size or larger underwent alone ( n = 62) plus 69) for lithotripsy. The therapeutic outcome complications were reviewed compared. Results There no differences between...
Background: Endoscopic submucosal dissection (ESD) is a representative treatment modality for early gastric neoplasms. However, the learning curve beginners performing ESD using multibending endoscope has not been introduced. Objective: This study aimed to evaluate curves of operators undergoing intensive training endoscope. Design: was retrospective single center study. Methods: We retrospectively analyzed data over 1500 consecutive ESDs performed by two A change-point analysis with 50...
Although the urea breath test (UBT) is widely used as a representative monitoring after Helicobacter pylori eradication, false-negative results can occur because of gray zone related to its cutoff value. This study aimed compare diagnostic performances rapid urease (RUT), RUT with sweeping method, and UBT, investigate role method in UBT values. We retrospectively reviewed 216 patients who received standard first-line H. eradication treatments (n=216). All participants underwent testing using...
Background. The placement of self-expandable metallic stents (SEMS) is known to be effective palliative treatment malignant gastroduodenal obstruction. There are two types SEMS – covered and uncovered each with its own advantages disadvantages. This study was conducted compare between the clinical outcomes in patients Patients methods. prospectively from January 1998 June 2007 154 were included. All had symptomatic obstruction not candidates for curative operation. Seventy received SEMS,...
Biopsy needles have recently been developed to obtain both cytological and histological specimens during endoscopic ultrasound (EUS). We conducted this study compare 22-gauge (G) fine needle aspiration (FNA) needles, which the most frequently used, new 25G biopsy (FNB) for EUS-guided sampling of solid pancreatic masses. a retrospective cohort all performed between June 2010 October 2013. During period, 76 patients with masses underwent 22G FNA (n = 38) or FNB diagnosis. An on-site...
Objective Endoscopic transpapillary gallbladder drainage using a nasocystic tube or plastic stent has been attempted as an alternative to percutaneous for patients with acute cholecystitis who are not candidates urgent cholecystectomy. We aimed assess the efficacy of single-step endoscopic common bile duct and gallbladder, evaluate which method is ideal bridge before elective Materials methods From July 2011 December 2014, 35 moderate-to-severe suspicion choledocholithiasis were randomly...
Abstract Genomic alterations in tumors play a pivotal role determining their clinical trajectory and responsiveness to treatment. Targeted panel sequencing (TPS) has served as key tool over the past decade, but advancements costs bioinformatics have now made whole-genome (WGS) feasible single-assay approach for almost all cancer genomes settings. This paper reports on findings of prospective, single-center study exploring real-world utility WGS (tumor matched normal tissues) two primary...
Guanine nucleotide binding protein (G-protein) beta polypeptide 3 (GNB3) C825T polymorphism alters intracellular signal transduction, which may lead to motor or sensory abnormalities of the gastrointestinal tract. The aim present study was evaluate association GNB3 with susceptibility overlap syndrome functional dyspepsia (FD) and irritable bowel (IBS) in a Korean population.One hundred sixty-seven patients FD alone, 60 IBS 85 IBS, 434 asymptomatic healthy subjects participated study....
In patients with occlusive colorectal cancers, a complete preoperative evaluation of the colon proximal to obstruction is often impossible. We aimed evaluate feasibility colonoscopy after stent placement and determine whether success rate differs between covered uncovered stents.Seventy-three malignant were enrolled prospectively. resectable cancer, was performed insertion self-expandable metal (SEMS). The compared stents.Forty-five 73 who underwent had cancer (61.6%). A possible in 40 45...
The design and analysis of joint torque sensors for a direct-drive arm is presented. driven by high motors without reducers or other transmission. It can serve as suitable device implementing control schemes. direct coupling to their loads reduces friction, eliminates backlash increases mechanical stiffness. All these are desirable features precision control. drive system, however, still has some errors due electric electromagnetic nonlinearities at the amplifiers. measurement therefore...
Goals: To identify predictive factors associated with the presence of missed synchronous lesions after endoscopic submucosal dissection (ESD) for gastric adenoma or early cancer (EGC). Background: Secondary neoplasms that develop during follow-up period ESD EGC are divided into metachronous and lesions. Methods: was performed in 250 patients adenoma. The follow-ups <1 year, without curative resection, additional surgery were excluded from study. Missed defined as secondary detected within...
The rendezvous approach is a salvage technique after failure of endoscopic retrograde cholangiography (ERC). In certain circumstances, percutaneous-endoscopic (PE-RV) preferred, and ultrasound-guided (EUS-RV) difficult to perform. We aimed evaluate PE-RV outcomes, describe the techniques, identify potential indications for over EUS-RV.Retrospective analysis was conducted prospectively designed ERC database between January 2005 December 2016 at tertiary referral center including cases where...