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안저사진과 레트로모드로 촬영한 주사레이저검안경 영상의 드루젠 발견 비교
송인석,조희윤,이병로,In Seok Song,Hee Yoon Cho,Byung Ro Lee 대한안과학회 2011 대한안과학회지 Vol.52 No.10
Purpose: To compare SLO (scanning laser ophthalmoscope) retromode images with conventional color fundus photography for the detection of drusen. Methods: We obtained color fundus photography and SLO retromode images of the ten fellow eyes of ten patients with unilateral exudative age-related macular degeneration (AMD) and twenty eyes of 20 patients who had only drusen without exudative AMD. The numbers of druse in each image were compared within the same retinal boundary. Results: In the fellow eyes of unilateral exudative AMD, an average number of 63.1 ± 81.9 drusen in color fundus photography and an average number of 141.3 ± 124.1 drusen in SLO retromode images were detected (<em>p</em> = 0.005). In the eyes with only drusen, an average number of 57.0 ± 43.9 drusen in color fundus photography and an average number of 112.2 ± 82.0 drusen in SLO retromode images were detected (<em>p</em> = 0.000). In the presence of media opacity like cataract, drusen were better detected in SLO retromode images than they were in color fundus photography. Conclusions: About twice as many drusen were detected in SLO retromode images than in color fundus photography. Drusen were also better detected in SLO retromode images in cases of media opacity. SLO retromode images might provide more sensitive images for the detection of drusen than does color fundus photography. J Korean Ophthalmol Soc 2011;52(10):1189-1194
송인석,이홍균,Song, In-Seok,Lee, Hong-Gyun 대한흉부심장혈관외과학회 1986 Journal of Chest Surgery (J Chest Surg) Vol.19 No.1
The pericardial adhesions following the first open heart surgery pose a major problem that can increase the morbidity and mortality in cases of reoperation because of the danger of damaging the heart, great vessels or grafts. The purpose of this study was to determine the effect of intrapericardial infusion of 5% dextrose solution and heparin on experimental pericardial adhesions. The 15 white rabbits were divided into three treatment groups of 5 animals each: group 1 [control group], group 2[5% dextrose group] and group 3 [heparin group]. At 4 weeks, all animals were sacrificed and the pericardial adhesions were graded as follows: 1[none], ll[mild], Ill[moderate] and IV[severe]. Histological examination was performed on a subset of each group. The difference of adhesion between control and heparin group was evaluated by Chi-square analysis. The results were as follows: 1. Pericardial adhesions developed in 80% of animals in group 1 and 2. 2. Only 40%> of animals in group 3 had mild to moderate pericardial adhesions. This was significantly different from the control group [P=0.01]. 3. Histological examination showed that the pericardium with adhesion was thickened with fibrosis, while that without adhesion was thin, normal appearance. 4. In group 3, there was no evidence of hemorrhage or hemorrhagic tendency in the pericardium.
송인석,조건현,이홍균,Song, In-Seok,Jo, Geon-Hyeon,Lee, Hong-Gyun 대한흉부심장혈관외과학회 1984 Journal of Chest Surgery (J Chest Surg) Vol.17 No.4
Mucoepidermoid tumor arising from the bronchial tree as one of the bronchial adenoma is a extremely rare in incidence. And its clinical and histopathologic behavior has been reported as varying degree of benign to extremely malignant. Because symptoms are usually related to the bronchial obstruction or obstructive pneumonitis followed by endobronchial growth of tumor, frequently error is made in diagnosis of this tumor as entity of obstructive lung disease. We present a case of mucoepidermoid tumor with review of relevant literatures arising from the right middle lobe bronchus extending to intermediate bronchus in 47 years old housewife and was surgically removed by middle and lower Iobectomy.
연구.학술정보 효율적 검색을 위한 온톨로지 기반의 주제 색인어 구조화 방안 연구
송인석,Song, In-Seok 한국과학기술정보연구원 과학기술정보센터 2008 Journal of Information Science Theory and Practice Vol.39 No.4
본 연구에서는 정보검색도구 관점에서 지식조직체계로서 기존 시소러스 구축방안의 특성과 한계점을 검토하고, 대상 정보의 지식구조의 반영 및 정보 간의 의미관계 추론을 지원하는 온톨로지 기반의 주제 색인어 구조화 방안을 제시한다. 기존의 용어 중심의 시소러스와 달리, 단계별 연구프로세스 과정에서 수행되는 연구자의 정보행위 및 수요 분석에 때라 주제색인어의 개념을 식별 범주화하고, 인문사회과학 분야 학술논문의 지식체계를 구성하는 그 개념들 간의 유기적 관계정의를 통해 주제 색인어 집합의 의미구조를 정형화하였다. 이를 기반으로 각각의 온톨로지 기반 주제 색인어 집합은 구조화된 의미 색인으로서 대상 문서의 지식체계를 표현한다. 정보수요에 따라 정의된 공리나 추론규칙을 활용하여 이용자는 문제 해결에 적합한 정보를 대상 정보의 의미관계로 구성된 주제 도메인의 학술커뮤니케이션 네트워크상에서 분석적 정보탐색을 통해 효율적으로 검색 할 수 있다. In this paper, a ontology-based keyword structuring method is proposed to represent the knowledge structure of scholarly documents and to make inferences from the semantic relationships holding among them. The characteristics of thesaurus as a knowledge organization system(KOS) for subject heading is critically reviewed from the information retrieval point of view. The domain concepts are identified and classified by analysis of the information activities occurring in a general research process based on scholarly sensemaking model. The ontological structure of keyword set is defined in terms of the semantic relationship of the canonical concepts which constitute scholarly documents such as journal articles. As a result, each ontologically structured keyword set of a document represents the knowledge structure of the corresponding document as semantic index. By means of the axioms and inference rules defined for information needs, users can efficiently explore the scholarly communication network built on the semantic relationship among documents in an analytic way based on the scholarly sensemaking model in oder to efficiently retrieve the relevant information for problem solving.
플랫폼 기반 3D 그래픽 Geometry Processor 구현
송인석(In-Seok Song),하진석,전둘봉(Dool-Bong Jeon),이광엽(Kwang-Yeob Lee),김원종(Won-Jong Kim),조한진(Han-Jin Cho) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11
The geometry stage, which perform and lighting operations of vertices, became the critical part in 3D graphics pipeline. In this paper, we have planned and designed the Geometry Processor for the better and more efficient way to process the real-time 3D using the floating point unit. We also designed a verification system for Geometry engine. It is implemented with Xilinx- Virtex4 and ARM based SOC Platform. We did a verification of the processor at 25㎒ using SoC Base 1.0 Platform, and confirmed proper lighting process using three light of Ambient, Specular, Diffuse effect.