Jun-Ho Kwon

Endoscopic combined intrarenal surgery (ECIRS) with simultaneous retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PCNL) has been proposed as a new surgical treatment to overcome the disadvantage of RIRS and PCNL monotherapies in the treatment of renal stone. One of advantages of ECIRS is that it can increase stone-free rates in complex renal stone within single-session. Intermediate-supine position in real-time simultaneous ECIRS can prevent an anesthesiologic problem, and

Three dimensional structured DRAM technology has drawn huge attention recently for its potential to fulfill high speed operation and low power consumption. In this paper, 3D DRAM with vertical bit line (BL) architecture is introduced as a promising solution to overcome scaling limitation for future DRAM technology. Full chip integration with 5-layered cell stacked on peri -core wafer is successfully demonstrated for the first time, offering superior on -current performance and gate controllabili

Background Data are limited regarding comparison between nonspherical polyvinyl alcohol (PVA) particles and tris-acryl gelatin microspheres (TAGM) in uterine artery embolization (UAE). Purpose To compare pain after UAE with PVA versus TAGM for treatment of symptomatic fibroids. Materials and Methods In this randomized clinical trial, participants were assigned to be administered nonspherical PVA (355–550 μm) or TAGM (500–700 μm). Both groups were administered fentanyl-based intravenous patient-c

Purpose To evaluate the effectiveness of catheter-directed sclerotherapy (CDS) with 95% ethanol in patients with primary or recurrent ovarian endometriomas. Materials and Methods In this prospective study, 14 participants (mean age, 32 years; range, 20-44 years) who underwent CDS for ovarian endometrioma from March 2015 to December 2017 were evaluated. Diagnosis was based on symptoms and imaging studies. To assess the impact of CDS on ovarian reserve, serum anti-Müllerian hormone (AMH) was measu

OBJECTIVE: Although hybrid arch repair has gained widespread application as an alternative option for high-risk patients, concerns about its long-term durability remain an important issue. The aim of this study was to investigate late complications after hybrid arch repair. METHODS: From January 2002 to December 2017, hybrid arch repair was performed in 65 patients with aortic arch disease (median age, 66.1 years; range, 41-86 years). Hybrid arch repair was defined as debranching involving at le

Aspergillosis of the paranasal sinuses appears to be relatively rare in occurrence, but there is a growing incidence of it in accordance with the increasing use of antibiotics, steroid hormones, anticancer drugs, and radiation therapy. We have seen 15 cases of aspergillosis of the paranasal sinuses in which computed tomography (CT) was helpful for diagnosis. The characteristic feature of CT findings was the intermixture of high and low density areas in the affected paranasal sinuses, apparently

Background Small bowel bleeding (SBB) accounts for 5%–10% of all cases of acute gastrointestinal bleeding. Transcatheter arterial embolization (TAE) plays an important role in the treatment of SBB. Purpose To evaluate the safety and efficacy of superselective TAE exclusively for SBB and to assess factors associated with clinical outcomes. Material and Methods From January 2006 to April 2017, 919 patients were admitted with signs and symptoms of gastrointestinal bleeding; 74 patients (mean age =

Background Locally advanced pancreatic cancer (LAPC) is one of the most aggressive malignancies. Irreversible electroporation (IRE) is a novel technique that uses a non-thermal ablation to avoid vessel or duct injury. Purpose To investigate the safety and efficacy of IRE for the management of LAPC in a Korean population. Material and Methods Twelve patients (median age 64 years; age range 46–73 years) treated between December 2015 and March 2017 underwent intraoperative IRE for LAPC. Technical s