두경부 편평상피세포암종에서 $^{18}FDG-PET$을 이용한 방사선치료 반응평가

이상욱,류진숙,이병용,김종훈,안승도,신성수,김상윤,남순열,송시열,윤상민,박진홍,김성배,김재승,Lee Sang-Wook,Ryu Jin-Sook,Yi Byong-Yong,Kim Jong-Hoon,Ahn Seung-Do,Shin Seong-Soo,Kim Sang-Yoon,Nam Soon-Yuhl,Song Si-Yeol,Yoon Sang-Min,Park Jin-H 대한두경부종양학회 2003 대한두경부 종양학회지 Vol.19 No.1

Purpose: To evaluate the efficacy of positron emission tomography with 2-[F-18] fluoro-2-deoxy-D-glucose in discrimination of response in the nasopharyngeal carcinoma patients who treated with radiotherapy. Methods and Materials: Twenty-four patients who underwent FDG-PET scan before and after radiotherapy for no disseminated head and neck carcinoma at the Asan Medical Center between August 2001 and September 2002 were evaluate by prospective analysis. First FDG-PET scan performed before radiotherapy within 1 month, and second FDG-PET scan performed 1 month after radiotherapy. FDG-PET images were analyzed by standard uptake value (SUV). Follow-up period was more than 6 months. Results: The pretreatment SUV was 3.4-14.0 (median: 6.0) and posttreatment SUV was ground level-7.7 (median: 2.0). The overall sensitivity and specicity of FDG-PET to evaluate residual tumors in the nasopharyngeal carcinoma patients were 94% and 94%. Conclusion: FDG-PET is effective in evaluation of radiation response in the nasopharyngeal carcinoma. We think that the timing of one month after finished radiotherapy FDG-PET scan was not too fast to evaluation of radiation response.

족관절 안정성의 예상인자 -격자각과 비골의 길이-

이상욱,고상봉,신민철,이병관,Lee, Sang-Wook,Koh, Sang-Bong,Shin, Min-Cheul,Lee, Byoung-Kwan 대한족부족관절학회 2004 대한족부족관절학회지 Vol.8 No.1

Purpose: The aim of this study was to investigate the usefulness of mortise angle and fibular length measured in radiologic findings in predicting the ankle stability. Materials and Methods: One hundred cases fifty cases were randomly selected volunteers with normal ankle function and the other fifty cases were randomly selected patients whose ankle were treated in our hospital and who were followed for over 1 years with good results. A specific experimental fixture were made to get the even AP and lateral view and objective stress view. Results: The mortise angle and fibular length was not statistically significant to the degree of talar tilt angle under valgus or varus stress and that of displacement under anterior or posterior stress. Conclusion: The mortise angle and fibular length was not the objective predicting factors on the ankle stability. Maintenance of constrained talus in dynamic status is most important factors in determining the ankle stability.

편측 종골 골절의 수술적 치료의 예후 관련 인자

이상욱,고상봉,이현섭,Lee, Sang-Wook,Ko, Sang-Bong,Lee, Hyun-Sub 대한족부족관절학회 2006 대한족부족관절학회지 Vol.10 No.2

Purpose: To study prognostic factors of unilateral calcaneus fracture underwent surgery. Materials and Methods: We selected appropriate 60 cases of 236 calcaneus fracture cases between March 1985 and March 2004, and analyzed the correlation between sex, age, smoking, injury mechanism, Essex-Lopresti classification of calcaneus fracture, preoperative Bohler angle, postoperative Bohler angle, postoperative 1 year Bohler angle and Visual Analogue Scale (VAS), P.S. Kerr's Calcaneal Fracture Score (CFSS). The average age was 41.4 and average follow up period was 74 (12 to 240) months. Results: For follow up period, average VAS is 3.43 and CFSS is 81.23. The sex, age, smoking, injury mechanism, and preoperative, postoperative, postoperative 1 year Bohler angle had no correlation with the prognosis. But the Essex-Lopresti classification of calcaneus fracture, tongue type had better prognosis than joint depression type (VAS : p=0.041, CFSS : p=0.021). Conclusion: In unilateral calcaneus fracture, the sex, age, smoking, injury mechanism, preoperative Bohler angle, postoperative Bohler angle, postoperative 1 year Bohler angle had no correlation with the prognosis of fracture, but in Essex-Lopresti classification, the tongue type fracture had better prognosis than the joint depression type.

모바일 환경을 위한 맞춤형 서비스 유비쿼터스 영상전송 시스템의 설계

이상욱,안용범,김응수,Lee, Sang-Wook,Ahn, Yong-Beom,Kim, Eung-Soo 한국정보통신학회 2008 한국정보통신학회논문지 Vol.12 No.4

영상전송에 있어서 주변 환경에 대한 영상인식은 대단히 중요하다. 최근 정보인프라의 대중화에 따라 모바일 환경에까지 유, 무선을 통한 대상의 상태를 영상으로 확인하려는 사용자 중심적 욕구가 증가하였다. 하지만 기존의 모바일용 솔루션은 저대역폭을 가지는 모바일 단말기 기반의 네트워크 특성상 소프트웨어 코덱만을 지원함으로써 소프트웨어적인 처리의 한계로 인한 고화질의 영상은 기대 할 수 없었다. 이러한 단점을 해결하기 위해서 본 논문에서는 모바일 환경에서 적용할 수 있는 고화질 지원과 실시간적 요소를 고려하여 높은 압축률을 가지는 국제비디오 압축 표준인 MPEG-4 기반 하드웨어 코덱 설계에 관하여 기술하였다. 이를 위한 시스템의 최적화된 설계를 위하여 임베디드용 전용 CPU를 채용하였으며 구현된 시스템은 모바일 환경에서도 고기능을 서비스하고 전송속도 및 해상도 등에 있어서 우수한 성능을 나타내었다. An image recognition for surrounding conditions is very important in image transmission. In recently rears, as the information infrastructure is more general, the user-centered demands in which they want to identify by object's states image using wire or wireless environment have increased. However, existing mobile solution could be hard to expect high quality mage, because limitation of software processing according as network based on mobile terminal which has low band width supports software codec. To solve this weak point, this paper describes on hardware codec design based on MPEG-4 which is international video compression standard. Implemented system contains the embedded CPU for optimized design and it works high quality service as transmission speed and resolution in mobile circumstance.

특징 기반 다중 물체 추적 시스템에 관한 연구

이상욱,설성욱,남기곤,권태하,Lee, Sang-Wook,Seol, Sung-Wook,Nam, Ki-Gon,Kwon, Tae-Ha 대한전자공학회 1999 電子工學會論文誌, S Vol.s36 No.11

본 논문은 연속 영상에서 윤곽선과 특징을 이용하여 주위 환경 변화에 적응가능한 다중 물체 추적 방법을 제안한다. 적응 배경 모델을 사용하여 주위 환경 변화에 적응케 했으며, 물체 분할 모델은 배경 영상과 현재 영상의 차영상에서 국부 영상의 임계값 이상의 화소를 찾아 연결한 영역을 추출한다. 특징 추출과 물체인식모델은 탐색 창 내에서 발견된 다중 물체의 데이터 연상 문제를 해결하기 우해 사용되며, 실시간 추적을 위해 칼만 필터를 사용하였다. 제안된 방법을 도로 영상에 적용한 결과 다중 차량 추적이 정확히 이루어짐을 실험을 통해 보였다. In this paper, we propose an adaptive method of tracking multiple moving objects using contour and features in surrounding conditions. We use an adaptive background model for robust processing in surrounding conditions. Object segmentation model detects pixels thresholded from local difference image between background and current image and extracts connected regions. Data association problem is solved by using feature extraction and object recognition model in searching window. We use Kalman filters for real-time tracking. The results of simulation show that the proposed method is good for tracking multiple moving objects in highway image sequences.

언어행위적 관점에서 본 부정문의 기능들

이상욱,Lee Sang-Wook 한국독어학회 1999 독어학 Vol.1 No.-

In den kommunikativen orientierten Sprechbehandlungen lassen sich negative $S\"{a}tze$ allgemein als Klasse kommunikativer Operlationen mit spezifischen kommunikativ-pragmatischen Funktionen kennzeichnen. Diese Funktionen, die der Sprecher mit den sogenannten negativen $Behauptungss\"{a}tzen$ in wirklichen kommunikativen Sprechakten $ausdr\"{u}ckt$, stellen dabei Handlungs-bzw. Sprechhandlungsintentionen des Sprechers dar. Sie $k\"{o}nnen$ aus den in negierten $\"{A}u{\ss}erungen$ implizierten Sprecher-Einstellungen zu bestimmten Sachverhalten, die in den vorangehenden $\"{A}u{\ss}erungen\;seines\;Gespr\"{a}chpartners\;ausgedr\"{u}ckt$ werden, abgeleitet werden. In diesem Zusammenhang sind die negativen $Behauptungss\"{a}tze$ erst dann sinnvoll darzustellen, wenn sie mit Voraussetzungsstruktur verbunnden werden. D.h. also die Funktionen der negativen $Behauptungss\"{a}tze\;k\"{o}nnen$ im Zusammenhang mit einer(bzw. mehreren) vorangehenden $\"{A}u{\ss}erung(en)\;des\;Gepr\"{a}chpartners$ oder den aktuellen $Sprechhandlungsumst\"{a}nden\;besser\;erkl\"{a}rt$ werden. Aus solchen kommunikativen Situationen kann man bestimmte Einstellungen des $Gespr\"{a}chspartners$ annehmen. So haben wir negative $Behauptungss\"{a}tze$, die mit den in Grammatiken angenommenen verschiedenen $Negationsw\"{o}rtern$ verwirklicht werden, in die Subkategorie der Sprechhandlungen eingesetzt, um ihre sinnvollen Funktionen zu bezeichnen. Dabei stellen wir fest $da\ss$ den negativen $Behauptungss\"{a}tzen$ nicht nur eine Sprechhandlung 'Verneinen' zuzuordnen ist. In den aktuellen Sprechhandlungen zeigen sie auch die anderen kommunikativ-pragmatisch orientierten Funktionen. Wir klassifizieren nun die folgenden illokutionaren Typen: 1) Verneinen(bzw. Negieren); 2) Widersprechen; 3) $Pr\"{a}zisieren$ (oder Korrigier); 4) Behaupten; 5) Antworten auf Wortfrage; 6) Zustimmen; 7) Verweigern

반작용 휠 외란의 시야선 안정성 영향

이상욱,김동훈,전동익,오화석,김응현,김규선,Lee, Sang-Wook,Kim, Dong-Hoon,Cheon, Dong-Ik,Oh, Hwa-Suk,Kim, Eung-Hyun,Kim, Gyu-Sun 항공우주시스템공학회 2008 항공우주시스템공학회지 Vol.2 No.1

The line of sight(LOS) is affected by the vibration of spacecraft. It is necessary to predict the effect of disturbance on LOS stability. Reaction wheel assembly is anticipated to be the largest disturbance source on spacecraft. The disturbance which is occurred mainly due to the mass imbalance is analyzed with harmonic numbers. The accuracy and stability are verified by probability density function with dynamic equation of the satellite motion.

강화지역 암의 유병률

이상욱,이강희,김석일,강형곤,지선하,오희철,Yi, Sang-Wook,Lee, Kang-Hee,Kim, Suk-Il,Kang, Hyung-Gon,Jee, Sun-Ha,Ohrr, Hee-Choul 대한예방의학회 1999 예방의학회지 Vol.32 No.3

Objectives: Most descriptive studies of cancer have focused either or cancer incidence or mortality. Cancer prevalence has rarely been estimated. Cancer prevalence data can be used as a measure of the economic and social burden of cancer and are also useful for health care planning. This study attempts to estimate cancer prevalence in Kangwha county. Methods: This investigation is based on data of Kangwha cancer registry. The data include all cases of cancer diagnosed from 1983 through 1992. We define 'prevalent cases' as cancer patients who is alive as of January 1, 1993. For each five-year age group, the number of 'known prevalent cases' is added to the number of 'estimated prevalent cases'. Prevalence is calculated by dividing these sums by the populations of Kangwha County on December 31, 1992(derived from Kangwha Statistics Annual). Results: Crude prevalence of cancel among males and females are 536.7 and 601.1 per 100,000 respectively. Gastric cancer is the most common malignant neoplasm(213.2 per 100,000, crude prevalence) among males. It is followed by lung cancer(45.1 per 100,000), liver cancer(32.8 per 100,000), rectal cancer(25.4 per 100,000) and colon cancer(25.4 per 100,000). Cervical cancer is the most common cancer(201.9 per 100,000, crude prevalence) and is fellowed by gastric cancer(91.5 per 100,000), thyroid cancer(64.8 per 100,000), breast cancer(57.2 per 100,000) and rectal cancer(32.7 per 100,000) among females. Conclusions: We tried to estimate cancer prevalence based on the Kangwha cancer registry for the first time in Korea. The estimation of cancer prevalence based on a population-based cancer registry will be more correct and useful as the data accumulate. We will make another estimation in the near future. 유병률은 암의 발생과 생존, 사망을 한눈에 파악할 수 있으며, 지역사회에서 암의 영향을 살펴보는데 좋은 지표가 된다. 이 연구에서는 강화암등록사업 자료중 1983-1992년의 10년간의 자료를 이용하여 강화지역 암의 유병률을 추정하였다. 그 연구결과를 요약하면 다음과 같다. 1. 1993년 1월 1일 현재 강화지역에서 전체암의 보통유병률은 남자에서 인구 10만명에 536.7명, 여자에서 10만명에 601.1명이었고, 세계표준인구 연령표준화 유병률은 남자에서 인구 10만명에 436.5명, 여자에서 10만명에 462.1명 이었다. 2. 1993년 1월 1일 현재 남자에서 유병률이 가장 높은 암은 위암으로 보통유병률은 10만명당 213.2명이고, 그 다음이 폐암(10만명당 45.1명), 간암 (10만명당 32.8명), 직장암(10만명당 25.4명), 대장암(10만명당 25.4명)의 순이었다. 3. 1993년 1월 1일 현재 여자에서 유병률이 가장 높은 암은 자궁경부암으로 보통유병률은 10만명 당 201.9명이었고, 위암(10만명당 91.5명), 갑상샘암 (10만명당 64.8명), 유방암(10만명당 57.2명), 직장암(10만명당 32.7명)의 순이었다. 4. 전체암의 발생률은 남자가 여자보다 높았으나, 유병률은 오히려 여자가 남자보다 높았다. 5. 이 연구는 일부 제한점이 있으나 우리나라에서 장기간 지속된 지역사회 암등록 사업에 기초하여 암유병률을 추정한 최초의 연구로서 큰 의의가 있다고 생각한다.

족부에 발생한 내혈관 유두내피 증식증(1예 보고)

이상욱,장호진,김석준,Lee, Sang-Wook,Chang, Ho-Jin,Kim, Seok-Jun 대한족부족관절학회 2012 대한족부족관절학회지 Vol.16 No.4

Intravascular papillary endothelial hyperplasia (IPEH) known as Masson's hemangioma is a rare benign reactive vascular lesion caused by the abnormal proliferation of endothelial cells. The lesion occurs most commonly in the fingers, head and neck, but very rare in the foot. We report a case of IPEH in the foot treated with operative excision.

하인두암과 경부식도암에서 장기 보존 목적의 방사선치료

이상욱,Lee Sang-wook 대한기관식도과학회 2004 大韓氣管食道科學會誌 Vol.10 No.1