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체질량지수 25 ㎏/㎡ 미만의 2형 당뇨 환자에서 십이지장 공장 우회술의 효과
홍인기(In Ki Hong),김장용(Jang Young Kim),이연지(Yeon Ji Lee),최윤미(Yun-Mee Choe),최선근(Sun Keun Choi),이건영(Keon Young Lee),김세중(Sei-Joong Kim),조영업(Young Up Cho),안승익(Seung Ik Ahn),홍기천(Kee Chun Hong),신석환(Seok Hwan Sh 대한외과학회 2011 Annals of Surgical Treatment and Research(ASRT) Vol.80 No.2
Purpose: Diabetes mellitus refers to one of several risk factors for cardiovascular diseases, renal failure and so on. Medical treatments of T2DM cannot suggest a perfect cure. But gastric bypass resulting in the exclusion of the duodenum and proximal jejunum has been shown to improve or resolve T2DM. The goal of this study is to evaluate the effect of duodenojejunal bypass for T2DM patients below BMI 25 ㎏/㎡ in early postoperative period. Methods: Duodenojejunal bypass was performed on 25 patients at Inha University Hospital from July 2009 to April 2010. We compared 75 g OGTT, insulin, C peptide to those 7 days postoperative. The definitions for improvement are serum glucose level below 200 ㎎/㎗ of 75 g OGTT at 120 min or below 200 ㎎/㎗ at every other time in spite of over 200 ㎎/㎗ at 120 min. Results: A total of 25 patients (15 men and 10 women) were included. Median value BMI was 23.17 ㎏/㎡ and the mean duration of T2DM was 8.3 years. There was a significant decrease of postoperative 75 g OGTT levels from 176, 268, 345, 373, 371 ㎎/㎗ to 125, 170, 200, 225 and 241 ㎎/㎗, respectively (P<0.001). Only patients’ age was an independent factor resolution of T2DM based on this study. Conclusion: Duodenojejunal bypass could be one viable treatment modality for improving or resolving of T2DM although these are early results. This study has preliminary meanings only and the results of longer follow-up and a larger number of patients are necessary, by which we should be able to determine the effect and indications for surgical treatment of T2DM.
박정선(Jeong-Sun Park),홍기천(Ki-Chun Hong),오일석(Il-Seok Oh) 한국정보과학회 2001 정보과학회논문지 : 소프트웨어 및 응용 Vol.28 No.7
필기 한글의 문자나 단어 인식에 있어 패턴을 구성하는 획 성분을 추출하는 작업은 매우 중요하다. 세선화와 직선근사에 기반한 고전적인 방법은 원래 패턴을 크게 왜곡한다는 단점을 가지고 있다. 우리는 이러한 문제점을 해결하기 위하여 한글 패턴에 적합한 모양 분해 알고리즘을 제안한다. 한글 패턴은 T-접점과 B-접점이라는 두 가지 모양 특징을 중심으로 분할할 수 있다고 관찰에 근거하여 알고리즘을 설계하였다. 또한 세 개 이상의 획이 복잡한 형태로 만나는 결합 지점을 강건하게 처리하는 방법도 제시한다. 제안한 알고리즘을 PE92 데이타베이스에 적용한 결과를 제시한다. In the recognition of handwritten Hangul characters or words, extraction of strokes is an important task. The classical approach based on the thinning and line approximation, have some drawbacks of distortion of the original patterns. In this paper, we propose a shape decomposition algorithm specifically designed for Hangul patterns to resolve such problems. The proposed algorithm is designed based on the observations that Hangul patterns can be decomposed with two shape features called T-junction and B-junction. Additionally we present a robust technique which deals with the situation where three or more strokes meet at a joint. We present experimental results obtained by applying the proposed method to PE92 database.