Cone-Beam CT를 이용한 악교정 수술용 스텐트 제작과 임상 적용

김용일,김종렬,김성식,손우성,박수병,Kim, Yong-Il,Kim, Jong-Ryoul,Kim, Seong-Sik,Son, Woo-Sung,Park, Soo-Byung 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.2

The application of CT with basis on 3 dimensional-reconstruction is getting more widely practiced. With the data obtained from cone-beam computed tomography(CBCT), not only the diagnosis of the patient with skeletal abnormality but also the virtual simulation of the orthognathic surgery were performed and its application would be popular in orthodontic field. We reported a case, a 19-year old man who was diagnosed mandibular prognathism and required orthognatic surgery. In this case, the virtual orthognathic surgery was simulated and surgical wafer was fabricated by using CBCT data. That wafer was applied the actual orthognathic surgery. After preoperative orthodontic treatment, we prepared surgery as follows. : (l)Acquisition of 3D image data, (2)Reconstruction of 3-dimensional virtual model, (3)Virtual model surgery, (4)Extraction of stere-olithographic image, (5)Check-up for occlusal interference, (6)Fabrication of surgical stent by stereolithography. Bilateral sagittal split ramus osteotomy was operated and used stereolithographic surgical stent. 1 month later, we superimposed CBCT datas of virtual surgery and that of actual surgery, and then compared the result. CT data's application for othognathic surgery yielded satisfactory outcomes.

위암 환자에서 종양표지자 검사의 의의

김용일,노성훈,Kim, Yong-Il,Roh, Sung-Hoon 대한위암학회 2003 대한위암학회지 Vol.3 No.2

Purpose: The prognostic significance of peri-operative serum carcinoembryonic antigen (CEA) and carbohydrate antigen (CA)19-9 determination in patients with gastric cancer has been controversial. This study was performed to evaluate the significance of CEA and CA19-9 as clinical predictors of prognosis. Materials and Methods: The correlations between peri-operative serum CEA/CA19-9 levels and clinicopathologic factors were evaluated retrospectively in gastric cancer patients who had undergone curative surgery during the period from January 1995 to December 1998 at the Department of Surgery, Yonsei University College of Medicine. Results: The positive rates for CEA and CA19-9 were $17.9\%$ and $18.4\%$, respectively. The CEA positivity was related to the depth of invasion (P=0.040), lymph-node metastasis (P=0.000), and stage (P=0.001). The CA19-9 positivity was significantly related to the depth of invasion (P=0.000), lymph-node status (P=0.000), and stage (P=0.000). The positive rate of combined assay of pre-operative CEA and CA19-9 was $30.0\%$ There were statistically significant correlations with stage, depth of invasion, or degree of lymphnode metastasis in the combined assay. The survival rates according to the positivity of CEA and to the positivity of CA19-9 were clearly different (P=0.000). Conclusion: It should be stressed that even a simple blood test prior to surgery could be useful in establishing the depth of invasion, the status of lymph-node involvement, and the prognosis. For improved survival, an aggressive lymphadenectomy and adjuvant chemotherapy should be considered for patients with positive levels of pre-operative CA19- 9.

불연속변위해석법의 기본이론 및 개발현황

김용일,Kim, Yong Il 한국터널지하공간학회 1999 자연, 터널 그리고 지하공간 Vol.1 No.2

불연속 변위해석법 (DDA Method)는 개별요소법의 일종으로 최근에 개발된 새로운 해석법이다. Shi(1998)는 그의 박사학위 논문에서 DDA Method를 최초로 제안하였다. 또한 이 방법에 기초한 전산 프로그램이 개발되었으며 몇 가지 적용 예들이 그의 박사학위 논문 및 여러 가지 학술논문집에 발표되었다. 지난 11년간 (1988 - 1999) 암반공학 분야에서 DDA방법의 개발 및 적용에 많은 발전이 있었다. 본 논문에서는 DDA방법의 기본이론 및 개발현황을 제시하였으며, 지반공학 분야에 있어서의 DDA방법의 적용내용을 정리하였다. The Discontinuous Deformation Analysis (DDA) method is a recently developed technique that can be classified as a DEM method. Shi (1988) first proposed the DDA method in his doctoral thesis; computer programs based on the method have been developed and some applications of the DDA method in rock mechanics have been presented in the doctoral thesis and various publications. During past 11 years (1988 - 1999), considerable progresses have been achieved in developments and applications of the DDA method in the rock mechanics. In this paper the basic theory and developments of the DDA method are presented and applications of DDA method in geotechnical engineering are reviewed.

1996년도 제35차 대한소화기학회 추계학술대회 / 포스터 발표 : 위장관 ; 고도의 진행위암에서의 복강내 조기항암요법 및 복강내 온열화학요법

김용일,노성훈,류창학,민진식 ( Y . I . Kim,S . H . Noh,C . H . Yoo,J . S . Min ) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.1

영동선 동백산-도계간 장대터널 시공사례 연구

김용일,윤영훈,조상국,양종화,이내용,Kim, Yong-Il,Yoon, Young-Hoon,Cho, Sang-Kook,Yang, Jong-Hwa,Lee, Nai-Yong 한국터널지하공간학회 2002 터널기술 Vol.4 No.2

본 논문은 영동선 동백산역에서 도계역사이를 연결하는 장대터널 (솔안터널)의 시공사례에 대한 연구결과를 제시하였다. 본 터널은 완공시 길이 16.2Km로 국내최장터널이 된다. 본 터널 현장은 단층, 공동 및 함탄층으로 구성된 지질학적으로 복잡한 지역에 위치한다. 2번사갱 굴착을 위하여 사전에 전기비저항탐사 및 지하레이다탐사 등의 지구물리학적인 탐사방법이 단층, 공동 및 함탄층을 사전에 찾아내는데 활용되었으며, 이 방법은 상당한성과가 있었다. 이 물리탐사결과 및 현지 시추자료는 터널 보강설계를 개선하기 위한 자료로 활용되었다. 강관다단 그라우팅 방법은 단층 및 공동이 발달한 지역에서 좋은 보강 및 그라우팅효과를 발휘함이 입증되었다. 함탄층에서는 스웰렉스 록볼트와 공내 몰탈 그라우팅을 병행한 방법이 효과적임이 확인되었다. This paper presents a case study on the construction of a long tunnel named as "Solan tunnel", which connects between Mt. Dongbaek station and Dokye station in the Youngdong Railroad. The tunnel will be the longest tunnel with length of 16.4 km in Korea when completed. The tunnel site is located in a complex geological region with faults, cavities and coal measures. In construction of adit No. 2, geophysical investigation methods such as electrical resistivity method and GPR(Ground Penetration Radar) were used to detect faults, cavities and coal measures in advance with some success. The geophysical investigation results and in-situ boring data were used as feedback to improve tunnel reinforcement design. Also, the tube umbrellas of grouted steel pipes were found to have a good reinforcement and grouting effects in zones of faults, cavities. In zones of coal measures, swellex rockbolts with mortar grouting were verified as successful.

지형정보시스템에 의한 환경영향평가에 관한 연구

김용일,김형태,Kim, Yong Il,Kim, Hyung Tae 대한토목학회 1992 대한토목학회논문집 Vol.12 No.3

날로 심각해지고 있는 환경문제에 대응하기 위하여 정부는 1979년 환경영향평가제도(EIA)를 시행하고 있다. 이에 따라 환경오염은 여느 때보다 엄격히 규제되고 있으나 오염현상은 더욱 복잡해져서 그 피해상황도 여러가지 양상을 띄고 있다. 본 연구에서는 환경영향평가의 효율적인 목적달성을 위해, 체계적이고 과학적인 접근방법을 모색해 보고자 하였다. 즉, 지형정보시스템 (GIS)과 원격탐사(RS) 기법을 환경영향평가제도에 적용시키고자 하였으며, 그 대상지역으로서 관광단지 개발이 예정된 전남 화원 지역을 선정하여 여러가지 가정에 입각한 평가를 실시해 보았다. 평가내용으로서는 토공량계산, 토지이용모델작성, 사면방위도제작, 사면안정성평가, 가용부지추출 등이 연구내용에 포함되었다. 결과적으로 대상지역의 현황을 효율적으로 정확히 파악하고, 환경파괴를 최소한으로 하는 개발계획의 수립을 위한 자료를 제공함에 있어 지형정보시스템의 적용은 필수적이라 하겠다. EIA(Environmental Impact Assessment) was introduced in 1979 by our gorvernment to cope with serious environmental problems. Recently environmental pollution has been controlled severely than ever because pollution phenomena became more comlpicated and arrcordingly the damage more terrible. For the EIA system to achieve its goal effectively, systematic and scientific approach should be found out. For this reason the techniqes such as GIS(Geographic Information System) and RS(Remote Sensing) come to front strongly. The purpose of this paper is to investigate the application techniqes of GIS and RS to the EIA system. Haw-Won Myen, Hae-Nam Gun, Chun-Nam and its related area, which will be developed to be a sightseeing area, were selected as the study area. Applications of GIS resulted some important outcome such as earthwork calculations, landuse models, aspect maps, stability of slanting surfaces, elevation models, estimation of real estates, etc. GIS applied EIA proved to be very useful for the project managers and planners to plan, evaluate, judge the enviormental problems.

위암의 근치적 절제 후 발생한 뇌 전이

김용일,이준호,윤성현,노성훈,민진식,Kim, Yong-Il,Lee, Jun-Ho,Yun, Seong-Hyeon,Noh, Sung-Hoon,Min, Jin-Sik 대한위암학회 2001 대한위암학회지 Vol.1 No.2

Purpose: The common features of brain metastases from gastric cancer are unknown because brain metastasis is an uncommon pattern of metastasis. The purpose of this study was to investigate the clinical features of and the prognosis for patients with brain metastases after a curative resection for gastric cancer. Materials and Methods: Twenty-one (21) cases of patients with brain metastases of gastric cancer, who had been treated at the Department of Surgery, Yonsei University College of Medicine, were assessed retrospectively. Results: The mean age was $55.8\pm9.6$ years (range: $34\~70$ years), and the male-to-female ratio was 2.5 : .1. The most common neurologic symptom was headache ($38.5\%$), and no patient was free from the neurologic symptoms. The incidence of parenchymal metastasis (PM: $76.2\%$) was higher than that of leptomeningeal metastasis (LM: $19.0\%$). Patients with gastric cancer and brain metastasis showed high rates of blood and lymphatic vessel invasion (lymphatic vessel invasion: $85.7\%$; blood vessel invasion: $80.9\%$). According to Lauren's classification, the incidence of intestinal types was 14/21 ($66.7\%$), that of diffuse types was 3/21 ($14.3\%$) and that of mixed types was 4/21 ($19.0\%$). The mean interval between the gastrectomy and the diagnosis of brain metastasis was $24.7\pm4.0$ months (PM: 26.8 months; LM: 20.3 months). The median period of survival after diagnosis of brain metastasis was 2 months for paren chymal metastasis and 0 months for leptomeningeal metastasis. Conclusion:.. During a follow-up period, patients with neurologic symptoms should be suspected of having brain metastasis. Early diagnosis and treatment is the only hope to prolong survival in such patients.

BIM을 이용한 건축디자인 교육의 실험연구

김용일,양관목,Kim, Yong-Il,Yang, Kwan-Mok 한국교육시설학회 2012 敎育施設 Vol.19 No.5

Results of experiments conducted in university-based design studio suggests that Building information Modeling invites the adoption of a dramatically different design process, traditional design process and BIM-aided design process. Experiment method is used the actual experiment by students. In contrast to traditional design process rooted in successive refinement of abstractions and dependence on tacit knowledge, the studio BIM-aided design process depends on a complete and comprehensive date base and alterative solutions by complete analysis for helping choice of finial result. BIM viewed as provocateur of design education provides great potential for the critical analysis of how architectural design is taught. The results reflect new ways of teaching and addressing BIM methods and process in the design studio project.

반포천 유역 분리터널 건설공사

김용일,송창민,이동경,Kim, Yong-Il,Song, Chang-Min,Lee, Dong-Gyeong 한국터널지하공간학회 2021 자연, 터널 그리고 지하공간 Vol.23 No.4

교육을 위한 BIM 적용 실험 연구 - 초등학교 설계를 중심으로 -

김용일,Kim, Yong-Il 한국교육시설학회 2014 敎育施設 Vol.21 No.5

It is evident that the education of architecture is being transformed under the influence of technological, environmental, social, and financial challenges. BIM application for design education is innovative responses that are expected to provide the high ground for the AEC industry. So the purpose of this paper introduces that application of BIM for design education of students is efficiency and effectiveness through an actual experiment by elementary school project. The results by actual experiment elaborate the role of BIM in architectural education and its appropriate place in the curriculum. Also they state that increasingly complex nature of professional world that is reliant on design teams, joint development efforts, and more complex design projects makes obsolete the designer who is trained as solo artist engaging in competitive and individual pursuits.