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이은영 ( Eun Yong Lee ),최혜은 ( Hye Eun Choi ),최진화 ( Jin Wha Choi ),이신은 ( Sin Eun Lee ),선인오 ( In Ho Sun ),이용웅 ( Young Woong Lee ),황민호 ( Min Ho Hwang ) 전북대학교 의과학연구소 2005 全北醫大論文集 Vol.29 No.2
Sarcoidosis is chronic multisystem disease of unknown etiology characterized by noncaseating granulomatous lesions affecting multiple organs. Any organs or tissues can be affected but sarcoidosis more frequently involves the lungs, lymph nodes, spleen, liver, skin, eyes, muscles, bones, central nervous system, and salivary glands (in descending order of frequency). It is very rare for sarcoidosis to involve the breast parenchyma but it may be confused with benign or malignant tumors. We report a case of breast sarcoidosis in a young woman who presented with breast mass.
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증예(症例) : 용종제거술 후 발생한 대장 천공과 복강 내 출혈의 내과적 치료 1예
최진화 ( Jin Hwa Choi ),이신은 ( Shin Eun Lee ),최혜은 ( Hye Eun Choi ),이영재 ( Young Jae Lee ),선인오,이은영 ( Eun Young Lee ),김양호 ( Yang Ho Kim ),조진웅 ( Jin Woong Cho ),고은영 ( Eun Young Ko ),이용웅 ( Yong Ung Lee ) 전북대학교 의과학연구소 2005 全北醫大論文集 Vol.29 No.2
Colonoscopy is a widely used technique for diagnosis and therapeutic intervention. The procedure is usually well- tolerated. However, perforation and hemorrhage of the colon are the most commonly encountered complications, which usually occur at the site of a polypectomy. The reported rates of perforation and hemorrhage vary from 0.15 to 2.14 and 1.8~25%,respectively. Prompt surgical intervention is preferred treatment to minimize the morbidity and mortality. However, surgical intervention is invasive and requires a long-term recovery period. Conservative treatment is less invasive but can lead to the need for more extensive surgery in the case of treatment failure. We present a case of near fatal complications after colonoscopy, which initially suggested a colonic perforation and hemoperitoneum. However, this case was treated successfully with endoscopic clip therapy and Culdocentesis.
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What kind of specialized services attract patients?
이용웅(Lee, Yong-Woong),정영식(Jeong, Young-Sik),김윤지(Kim, Yun-Ji),백은혜(Baek, Eun-Hae),이현실(Rhee, Hyun-SiIl) 한국산학기술학회 2010 한국산학기술학회논문지 Vol.11 No.12
본 배경 : 병원들과 병상 수들의 과잉공급과 의료시장 개방으로 인해 병원들 사이의 경쟁이 매우 심화되고 있다. 더 많은 환자 유치를 위해 환자들이 선호하는 특화서비스에 대해 조사하게 되었다. 방법 : 환자만족도를 조사하 기 위해 약 20개 항목의 설문지를 개발하여 병원들 방문한 외래 환자 297명과 입원환자 302명을 조사하였으며 Excel 과 SPSS를 이용하여 기술통계와 회귀분석을 하였다. 결과 : 환자의 충성도와 특화된 병원서비스의 관련성이 지인에게 이 병원 이용을 추천하겠다와 관련이 있으며 1) FHR사용과 지속적인 치료 및 관리를 위한 도우미는 외래환자와 PHR사용에서 양의 관련성을 가지고 있었고 FHR은 외래환자에서 양의 관련성을 갖고 있었다. 2) 병원의 재방문 : PHR사용자와 환자치료 도우미의 요구가 있었으며 TV사용료 지불은 부정적 관련성을 가지고 있었다. 결론 : FHR, PHR과 환자치료 도우미들은 환자의 충성도를 증가시키는데 매우 중요한 요인들이었다. Background: Competition among hospitals has intensified, because hospitals and beds are oversupplying and the global medical market has opened in Korea. Method: we developed questionnaires of the patient’s satisfaction about 20 items. We surveyed 297 out-patients and 302 in-patients. We analyzed the descriptive statistics and regression by SPSS(Version 17) and Excel. Results: The relations with the patient’s loyalty and the specialized hospital service are 1) Recommend to other person: FHR use and the assistant for follow-up treatment were related positively for out-patient and PHR and FHR use were related positively for out-patient. 2) Revisiting: PHR use and the need of an assistant for follow-up patients were related for them and the PayTV were negatively related. Conclusion: FHR, PHR and assistant system for follow-up patient's condition were very useful factors to increase patient's loyalty.
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한동엽 ( Dong Yeob Han ),조영욱 ( Young Wook Cho ),김용일 ( Yong Il Kim ),이용웅 ( Yong Woong Lee ) 大韓遠隔探査學會 2003 大韓遠隔探査學會誌 Vol.19 No.2
다중분광 영상의 정확한 지형지물 분류를 수행할 때 고려해야 할 중요한 요소중에 적절한 분류 클래스의 선정과 선정된 클래스의 분리도가 높아지도록 트레이닝 지역(training fields)을 잡는 것은 특히 중요하다. 최근에 이용되고 있는 위성탑재 하이퍼스펙트럴(hyperspectral) 영상은 많은 밴드를 포함하고 있기 때문에 데이터 처리가 어렵고, 잡음(noise)으로 인하여 다중분광 영상보다 분류결과가 나쁜 경우도 나타난다. 특히 대상지역의 클래스에 따른 트레이닝 지역의 선정시 일부 클래스에서 하이퍼스펙트럴 밴드수에 비해 상대적으로 적은 수의 트레이닝 샘플로 인하여 공분산 행렬의 계산에 어려움이 따른다. 따라서 본 연구에서는 Hyperion 데이터를 이용한 분류를 수행하기 위하여 밴드 추출 방식을 알아보고, 분류영상의 정확도 평가를 통하여 밴드 추출의 효용성을 시험하였다. 밴드를 줄이는 또 다른 방법인 클래스간 분리도에 따른 최적 밴드를 추출하여 분류정확도를 평가하였다. 실험 결과, 밴드 추출이나 클래스 분리도에 따라 선택된 영상의 분류 정확도는 분류자(classifier)에 상관없이 전체 밴드를 사용한 원영상과 유사하게 나타났지만, 사용된 밴드수와 계산 시간은 단축되었다. 분류자는 MLC, SAM, ECHO의 3종류가 사용되었다. In order to classify Land Use/Land Cover using multispectral images, we have to give consequence to defining proper classes and selecting training sample with higher class separability. The process of satellite hyperspectral image which has a lot of bands is difficult and time-consuming. Furthermore, classification result of hyperspectral image with noise is often worse than that of a multispectral image. When selecting training fields according to the signatures in the study area, it is difficult to calculate covariance matrix in some clusters with pixels less than the number of bands. Therefore in this paper we presented an overview of feature extraction methods for classification of Hyperion data and examined effectiveness of feature extraction through the accuracy assesment of classified image. Also we evaluated the classification accuracy of optimal meaningful features by class separation distance, which is also a method for band reduction. As a result, the classification accuracies of feature-extracted image and original image are similar regardless of classifiers. But the number of bands used and computing time were reduced. The classifiers such as MLC, SAM and ECHO were used.
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김영남,김은화,최용우,이용웅,박찬국 조선대학교 2000 The Medical Journal of Chosun University Vol.25 No.2
Gastric volvulus is a rare disorder of stomach, in which stomach twists upon itself. This condition has two types(organoaxial and mesenteroaxial) that can be classified according to axis of rotation, and organoaxial type is more common. Clinical features are suddenly severe abdominal pain in acute onset and nonspecific vague abdominal discomfort in chronic form. It can be diagnosed by barium study and endoscopy with clinical symptoms. The treatment of patients with gastric volvulus has endoscopic reduction or surgical correction of the underlying abdominal pathologic feature predisposing to volvulus formation. We recently experienced a case of chronic onset of gastric volvulus which was confirmed by endoscopy and barium enema. It was failed by endoscopic reduction and corrected completely by laparoscopic gastropexy.
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