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김도현,박무인,유찬희,김규종,문원,박선자,장희경 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2
저자들은 65세 남자 환자의 위 중부체부 대만부 전벽에 발생한 점막하 종양에 대하여 3년간 추적관찰 중 크기증가소견으로 쐐기 절재술을 시행하였으며, 조직검사 및 면역 조직 화학 검사에서 위 신경초종으로 진단한 1예를 경험하였기에 보고하는 바이다. Gastric schwannoma is a very rare gastrointestinal benign tumor, which represents only 0.2% of all gastric tumors and 4% of all benign gastric tumors. We report a case of gastric schwannoma with enlargement of size through serial endoscopic examination. Endoscopic examination showed a hard mass of 4 x 3 cm in size with normal overlying gastric mucosa on the great curvature of the mid-body of stomach. The pathological finding revealed a picture of spindle cell tumor. Immunohistochemical stain was strongly positive for S-100 protein and non-reactive for CD34, C-kit and smooth muscle actin, thus leading to the diagnosis of gastric schwannoma.
위 MALT 림프종에서 다발성 림프절 전이로 오인된 동시성 림프절 결핵 1예
김성은,김규종,김도현,송준영,문대성,장리라,유찬희,문원,박무인,박선자,김영옥 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2
28세 남자가 내시경적 점막절제술을 통해 저등급 위MALT 림프종으로 진단되었다. 병기설정을 위해 18F-FDG PET 검사를 시행하였고 우측 쇄골상부, 우측상/하부 기관주위, AP window 부위에 강한 섭취가 관찰되어 전이성 림프절로 판단하였다. 그러나, 우측 쇄골상부 림프절에서 시행한 절제생검에서 만성육아종성염증소견이 관찰되었고 조직의 결핵 중합효소연쇄반응에서도 양성 반응을 보였다. 2개월간 항결핵제의 사용 후 시행한 추적 컴퓨터단층촬영 검사에서 림프절 크기의 감소를 보여 최종적으로 위 MALT 림프종에서 광범위 림프절 전이로 오인된 동시성 림프절 결핵으로 진단되었다. A 28-year-old man was diagnosed as gastric MALT lymphoma in diagnostic EMR (endoscopic mucosal resection). He subsequently underwent an 18F-FDG PET. 18F-FDG PET showed intense multifocal uptake in right supraclavicular, right upper and lower paratracheal, and AP window areas that was considered radiologically to represent widespread metastatic lymphadenopathy. Excisional biopsy of a supraclavicular lymph node, however, revealed chronic granulomatous lymphadenitis with a positive reaction of Tb-nested PCR. After antituberculosis treatment for 2 months, a follow-up CT scan showed complete resolution of the lesions. Intense 18F-FDG uptake could be due to an infectious process such as synchronous tuberculous lymphadenitis. Therefore, this could mimic a malignant condition such as lymphoma with extensive lymph node metastasis due to a false-positive finding, which may lead to a misdiagnosis.
Chan Hui Yoo,박무인,박선자,문원,Hyung Hun Kim,Jun Young Song,Do Hyun Kim 대한소화기내시경학회 2014 Clinical Endoscopy Vol.47 No.1
Background/Aims: Recent studies have demonstrated that magnifying endoscopy with narrow band imaging (ME-NBI) facilitates differentiation of early gastric cancer from gastric adenoma using vessel plus surface (VS) classification. This study estimated the interobserver and intraobserver agreement of endoscopists using the Yao VS classification system for the gastric mucosal surface. Methods: We retrospectively reviewed patients who underwent endoscopic submucosal dissection or endoscopic mucosal resection, and selected cases in which preoperative ME-NBI was conducted. Before testing endoscopists, a 20-minute training module was given. Static ME-NBI images (n= 47 cases) were presented to seven endoscopists (two experts and five trainees) who were asked to assess the images in 20 seconds using the Yao VS classification system. After 2 weeks, the endoscopists were asked to analyze the images again. The κ statistic was calculated for intraobserver and interobserver variability. Results: The mean κ for intraobserver agreement was 0.69 (experts, 0.74; trainees, 0.64). The mean κ for interobserver agreement was 0.42 (experts, 0.49; trainees, 0.40). Conclusions: We obtained reliable results as assessed by observer variability, with only brief training on VS classification. The VS classification appears to provide an objective assessment of ME-NBI for trainees who are not familiar with ME-NBI.
유찬희 ( Chan Hui Yoo ),박선자 ( Seun Ja Park ),박무인 ( Moo In Park ),문원 ( Won Moon ),김형훈 ( Hyung Hun Kim ),이준식 ( Jun Sik Lee ),송준영 ( Jun Young Song ),장희경 ( Hee Kyung Jang ) 대한소화기학회 2013 대한소화기학회지 Vol.62 No.2
Mucinous gastric carcinoma (MGC) is an unusual histologic subtype, and early detection of MGC is very rare. Early stage MGC appears as an elevated lesion resembling a submucosal tumor (SMT) due to abundant mucin pools in the submucosa or mucosa. We report a rare case of SMT-like early-stage MGC. Tumor type was predicted preoperatively based on characteristic endoscopic findings, in which an SMT-like mass was observed at the gastric fundus. The tumor was covered by nearly normal mucosa, but with an opening allowing for the passage of copious mucus discharge. A total gastrectomy with Roux-en Y esophagojejunostomy was subsequently performed. Histopathology of the tumor revealed early-stage (lamina propria) mucinous adenocarcinoma. (Korean J Gastroenterol 2013; 62:122-125)
Hyun ju Jun,Hoe Song Yang,Young Dae Yoo,So Hui Park,So Hui Park,Hyuk Jegal,Chan Joo Jeong 국제물리치료학회 2015 Journal of International Academy of Physical Ther Vol.6 No.2
The purpose of this study was to investigate the effects of vibration on Golgi tendon organ(GTO) and Hold-Relax of PNF in muscular activity and gait factors on Delayed Onset Muscle Soreness(DOMS). This study was conducted on 20 subjects. they were divided into two groups; Hold-Relax of PNF(n=10), Vibration on GTO(n=10). Both of the group was performed interventions 1 times a day for 3 days. The data was analyzed by the repeated-ANOVA for comparing before, after 24h and after 48h changes of factors in each group and the Independent t-test for comparing the between groups. The results are as follows. There was statistically significant difference of before, after 24h and after 48h vibration on GTO group and Hold-Relax of PNF group in muscular activity and gait factors on DOMS.(p<0.05). There was no statistically significant difference of between vibration on GTO group, but there was statistically significant difference Hold-Relax of PNF group in EMG, step width, step length, stride length(p>0.05). As a results of this study, Hold-Relax of PNF group are effective in improving muscular activity and gait factors
협동로봇 동작 오류 진단을 통한· 비전 기반 조인트 결함 추적 기법
양희찬 ( Hui-chan Yang ),김진세 ( Jinse Kim ),유동연 ( Dong-yeon Yoo ),이정원 ( Jung-won Lee ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2
스마트팩토리의 핵심 설비 기기인 협동로봇의 유지보수를 위해 다양한 센서 데이터를 활용한 딥러닝 기반 결함 진단 연구가 확대되고 있다. 하지만 협동로봇은 기계적 특성과 수행하는 작업의 다양성으로 인해 내부 센서 데이터의 복잡도가 매우 높아 고정적인 결함 진단 기법을 적용하기 어렵다. 따라서 본 논문은 협동로봇의 동작 패턴을 직관적이고 신속하게 인지할 수 있는 비전 기술을 활용하여, 동작 오류 진단을 기반으로 원인이 되는 조인트 결함 위치를 추적하는 딥러닝 기법을 제안한다.
Sunitinib으로 치료 중인 전이성 신세포암 환자에서 발생한 장벽기종
최유아 ( Yoo A Choi ),심은희 ( Eun Hui Sim ),이경은 ( Kyoung Eun Lee ),고선영 ( Sun Young Ko ),서민지 ( Min Ji Seo ),양영준 ( Young Jun Yang ),박지찬 ( Ji Chan Park ),박선영 ( Suk Young Park ) 대한소화기학회 2013 대한소화기학회지 Vol.61 No.6
Sunitinib as a multitarget tyrosine kinase inhibitor is one of the anti-tumor agents, approved by the United States Food and Drug Administration to use treat gastrointestinal stromal tumor and metastatic renal cell carcinoma. The agent is known to commonly induce adverse reactions such as fatigue, nausea, diarrhea, stomatitis, esophagitis, hypertension, skin toxicity, reduciton in cardiac output of left ventricle, and hypothyroidism. However, it has been reported to rarely induce adverse reactions such as nephrotic syndrome and irreversible reduction in renal functions, and cases of intestinal perforation or pneumatosis interstinalis as such reactions have been consistently reported. In this report, a 66-year old man showing abdominal pain had renal cell carcinoma and history of sunitinib at a dosage of 50 mg/day on a 4-weeks-on, 2-weeks-off schedule. Seven days after the third cycle he was referred to the hospital because of abdominal pain. Computed tomography showed pneumoperitoneum with linear pneumatosis intestinalis in his small bowel. The patient underwent surgical exploration that confirmed the pneumatosis intestinalis at 100 cm distal to Treitz`s ligament. We report a rare case of intestinal perforation with pneumatosis intestinalis after administration of sunitinib to a patient with metastatic renal cell carcinoma.
COLMS:Components Oriented u-Learning Management Systems in Ubiquitous Environments
Park, Chan,Sung, Dong-Ook,Han, Cheol-Dong,Jang, Yeong-Hui,Lee, Hye-Jin,Yoo, Jae-Soo,Yoo, Kwan-Hee The Korea Contents Association 2009 International Journal of Contents Vol.5 No.1
In this paper, we propose u-Learning management systems which are designed and implemented based on learning activities oriented components. The proposed systems are composed of components which can process the functionalities for coming into actions of learning activities. Specially, each component is broken into class units by which learning activities of users can be performed on various devices. When users by to connect the proposed learning management system, the system explores devices of users and the corresponding connection program, and then selects components that are fitted to the activities and combines them in a real-time. Our system provides u-Learning environment so that users can use the learning activity services taking no influence on time, place, various devices and programs. That is different from traditional e-Learning system which cannot support various devices of users directly.
컴퓨터 과학 교육 : 메타데이터를 활용한 e-포트폴리오의 계층적 기법
이혜진 ( Hye Jin Lee ),박찬 ( Chan Park ),장영희 ( Yeong Hui Jang ),정지성 ( Ji Sung Jung ),성동욱 ( Dong Ook Seoung ),유재수 ( Jae Soo Yoo ),유관희 ( Kwan Hee Yoo ) 한국컴퓨터교육학회 2009 한국컴퓨터교육학회 학술발표대회논문집 Vol.13 No.2
e-러닝 환경에서 e-포트폴리오는 교수자와 학습자 각각 수행한 수업 및 학습에 대한 전반적인 내용을 체계적으로 관리한 결과물로, 이를 활용할 경우 교수자에게는 수업 설계 및 강의를 돕고, 학습자에게 학습결과물을 확인함으로써 자기반성의 기회를 줄 수 있어 매우 유용하다. e-포트폴리오를 생성하기 위한 방법으로는 대표적으로 교수자 및 학습자로부터 직접 수집하는 방법과 e-러닝 시스템을 통한 학습활동의 결과물로 자동적으로 수집하는 방법이 있다. 수집하고 생성한 e-포트폴리오의 자료들을 쉽게 활용하기 위해서는 메타 데이터를 사용하여 분류 한다. 본 논문에서는 e-포트폴리오를 사용목적에 적합하게 효과적으로 구성하기 위해 데이터를 계층화 하여 분류한 후에 메타데이터를 활용하여 교수자와 학습자의 활용 목적에 맞게 상황별로 구성하는 시스템을 제시하였다. 이러한 시스템을 이용하여 효율적인 e-포트폴리오 관리를 할 수 있고, 또한 상황별 구성방식에 대한 로직을 추가함으로써 사용자는 자신만의 e-포트폴리오를 구성할 수 있다.