Biography
Prof. Young Ho Choi
Prof. Young Ho Choi
Department of Radiology, SMG-SNU Boramae Medical Center, Republic of Korea
Title: Basic Research of Double J Stent using CFD and In Vitro Experiment
Abstract: 
Ureter plays an important role of drainage in the urinary system, connecting the renal pelvis to the bladder. If the ureter is obstructive owing to external or internal reasons, such as cancer or tumor, increased pressure in the upper urinary tract can lead to hydronephrosis, which enlarges the renal pelvis and bladder. Ureteral stents are used to alleviate the congestion of urine in the upper urinary tract. Double J Stent (DJS), which has the shape of a double J, is a representative ureteral stent. DJS aims to secure sufficient urine flow in the urinary system, but finally acts as a foreign body in the urinary system, which is likely to cause side effects. In case of long-term usage, encrustation, dissipation of peristalsis, and reflux may occur on DJS. Therefore, it is necessary to improve the performance of the device and prevent the generation of complications. We would find the way to secure enough urine flow in the urinary system by optimizing DJS design. The purposes of this study are to thoroughly investigate the DJS-inserted urine flow, to determine why the DJS is not functioning, and to use DJS as the stent for maintaining sufficient urine flow from the kidney to the bladder with the interdisciplinary approach of fluid dynamics and medical science.
Biography: 
Young Ho Choi won his bachelor’s degree (1993), master’s degree (2002) and doctoral degree (2009) at Seoul National University College of Medicine in Korea. After licensed to practice medicine, he took rotating internship training (1993-1994), residency training (1997-2001) and fellowship training (2001-2002) in Seoul National University Hospital. He had a mandatory military service (1994-1997) in a public health center in Gyeongju. He got a position at the Department of Radiology, SMG-SNU Boramae Medical Center and he is currently a clinical professor there. He is a member of the Korean Society of Radiology, the Korean Society of Interventional Radiology and the Biomedical Engineering Society for Circulation. His research interest includes interventional radiology and bio-fluid dynamics.