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가족성 용종증(FAP) 환자의 치료에 복강경 수술의 유용성
최규석 대한대장항문학회 2004 Annals of Coloproctolgy Vol.20 No.6
Purpose: Familial adenomatous polyposis (FAP) normally appears in the early twenties and needs a restorative total proctocolectomy with ileal pouch-anal anastomosis (TPC/IPAA). Thus, most patients with FAP are young, in socially active stage, and very concerned about their body image. Vast experience with laparoscopic colorectal surgery led us to perform laparoscopic-assissted TPC/IPAA for patients with FAP with or without cancer, and we evaluated the results from technical and oncologic aspects. Methods: Seventeen of 20 FAP patients underwent laparoscopicassisted surgery between July 1996 and June 2004. All procedures were done in a totally laparoscopic, a laparoscopic- assisted, or a hand-assisted laparoscopic fashion. Results: Fifteen patients underwent laparoscopic-assisted TCP/IPAA; two others had a total colectomy with ileorectal anastomosis and a TCP with permanent ileostomy laparoscopically. Eight patients showed coexisting colorectal cancers. The mean operation time was 396.5 min. Patients passed flatus or liquid at the 2.2 post-operative day (POD), resumed meals at the 4th. POD, and were discharged at the 10th. POD. There were no intra-operative complications or open conversions. Post-operative complications occurred in 5 different patients. One patient with colon cancer had multiple hepatic metastases at 11 months after the operation and died at 24 months after the operation. Conclusions: Laparoscopic-assisted surgery for the patients with FAP was technically feasible and could be an alternative method. The systematized and experienced approach could reduce a operation time to be acceptable. In selected cases and with a vast of experience, coexisting colorectal cancer would not be contraindicated for laparoscopic approach for the treatment of FAP.
최규석,박종진,임종수 한국인터넷방송통신학회 2011 한국인터넷방송통신학회 논문지 Vol.11 No.2
본 논문에서는 기존 지상파 이동멀티미디어 방송시스템인 Terrestrial-DMB(T-DMB) 시스템의 성능개선을 위하여 이동환경에서 고전송 효율, 고품질 서비스를 제공할 수 있는 새로운 휴대 이동 멀티미디어 방송 시스템인 Advanced T-DMB 시스템의 시험시스템 구현 및 현장 시험결과를 기술한다. 기존 방식보다 멀티미디어 방송성능이 한층 개선된 Advanced T-DMB 시스템은 계층변조 및 터보 코드 방식을 이용하여 기존 T-DMB와 역호환성을 유지하면서 동일한 주파수 대역폭에서 전송률을 최대 2배로 높이기 위해 연구개발되었다. 제안된 시스템의 성능검증을 위해 현장 시험을 하였으며, 그 결과 이동서비스를 목표로 하는 B-모드와 고정 서비스를 목표로 하는 Q-모드에 대해 각각 0.576Mbps, 1.152Mbps의 전송용량이 증가된 것을 확인할 수 있었다. In this paper, we describes about implementations of Advanced Terrestrial DMB prototype system which can provide high higher efficiency of transmission and better quality of service than Terrestrial DMB(T-DMB) system for performance improvement of conventional mobile multimedia broadcasting system. And also we analyze field test results of the system. Advanced T-DMB system has been developed to increase data rate up to double of conventional T-DMB in same bandwidth while maintaining backward compatibility, using hierarchical modulation and turbo code. We conducted field tests to verify the performance of the proposed system through implementing of test system. As a result, we confirmed 0.576Mbps and 1.152Mbps were added to mode B and mode Q of Advanced T-DMB respectively than T-DMB system.