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일반 건강인에 대한 매독혈청검사 성적 ( 1987 - 1991 )
최연상(Yeon Sang Choi),유희준(Hee Joon Yu),손숙자(Sook Ja Son) 대한피부과학회 1994 大韓皮膚科學會誌 Vol.32 No.5
Backgrouod : According to the areas and people that are examined, there are many differences in the prevalence of syphilis in Korea. However, the reactive rate of the serologi test for syphilis showed an increase in the 1960s, and it has deerea@sed from the beginning of the 1970s. Objective : Comparing the results of tke serologic test for syphilis which lotad been performed for the 5 years(1987-1991) on the physical examines and pregnant women who were considered as healthy, with the results with normal people, who were considered as healthy, which had been already reported, we tried to observe the change of reactive rate of serologic test for syphili. Methode : The serologic test for syphilis, including serum VDRL test and serum TPHA test, were carried out on 25,254 healthy adults(20,405 were physical examineea eamined at National Medical Center and 4,849 were pregnant women delivered at National Medical Cer ter). Results : The reaetive rate of serum VDRL test was 0.8% in 25,25 the althy adults(physical examinees 0.8%, pregnant women 0.7%). There were no stistically differerces between the annual incidences. 85.5% of VDRL-reactive subjects showed low VDRL titers(below 1:4) by the quantitative serum VDRL test, The biologic false positive reaction of serum VDRL test was 29(19.5%) in 149 VDRL-reactive subjects, using serum TPHA test as a standard. Conclusion : This study suggested thai, there was a decrease in the prevslence of syphilis in Korea. (Kor J Dermatol 1994;32(5):866-871)
무선센서네트워크기반의 디지털 도어락을 이용한 홈오토메이션 시스템 개발
최연상(Yeon-Sang Choi),박용태(Yong-Tae Park),백운성(Woon Sung Baek),이동훈(Dong-hun Lee),변재영(Jae-Young Pyun) 한국정보기술학회 2011 Proceedings of KIIT Conference Vol.2011 No.5
최근 정보통신 기술의 발전에 따라 센서 네트워크 발전에 따라 우리의 생활공간에서 응용되는 빈도가 높아지고 있다. 또한, 유비쿼터스 기술이 발전하여 컴퓨팅 및 생활 기술이 발전하였다. 그에 따라 응용 서비스들이 제공되고 있다. 현재의 홈오토메이션 시스템은 기존의 건물에 적용하기 위해서는 설치 시간의 증가와 함께 사용자의 비용이 증가한다. 우리의 시스템은 도어락에 서버가 장착되며, 집 밖에서도 인터넷을 통해 집안 내부의 상황을 모니터링 할 수 있으며, 제어도 가능하다. 결과적으로 우리의 시스템이 설치시 발생하던 비용적인 문제와 시간적인 문제를 해결 하였다. Recently information and communication technology and sensor networks has been delveoped, Thus the frequency of application in our living space is increased. Ubiquitous computing and the technological advance develops better life quality. Application services are provided accordingly. To apply with existing buildings the home automation system, increase the installation time and the user’s cost. Our system is mounted on the server by door lock, When user is outside of home via the internet, it can be observed the situation inside of the house, and also can be controlled. As a result, our system solved the cost of installation and time problem.
CT검사 시 방사선 흡수선량에 따른 혈액학적 변화 관찰
최연상(Yeon Sang Choi),박환상(Hwan Sang Park),정창기(Chang Gi Jeong),이종호(Jong Ho Lee),최남길(Nam Gil Choi) 대한CT영상기술학회 2012 대한CT영상기술학회지 Vol.14 No.1
목적 환자의 CT검사 시 흡수선량에 따른 혈액수치를 검사 전과 검사 후로 나누어 흡수선량범위에 따른 급성장애에 관한 혈액학적 변화 관계를 알아보고자 한다. 대상과 방법 2011년 5월부터 7월까지 CT검사를 시행한 병동환자(남: 74명, 여: 53명-평균연령 60.9세)를 중심으로 검사 전 혈액검사 검사 후 1~2일 후 혈액검사결과를 수집하여 흡수선량 범위(500mGy 이하, 500~1000mGy, 1000 mGy 이상)를 구분, 환자의 급성장애에 관한 혈액수치를 비교 분석하였다. *사용장비: GE Light VCT (Dose Report: DLP <mGy-cm>) 결과 1. CT 검사 전과 검사 후(혈액검사 1~2일 후 이내) 혈액수치결과. 127명(남: 74명, 여: 53명) 평균나이: 60.9세 평균Dose: 846mGy-cm WBC(5.6→4.9) 10³/mm³ 12,5% 감소, RBC(4.8→4.5) 106/mm³ 6,3% 감소, Platelet(l76.9→165.6) 10³/mm³ 6.4% 감소, Lymphocyte(20.7%→19.2%) 7.2% 감소. 1) 500mGy-cm 이하:(남: 23명, 여: 13명) 평균나이: 60.2세, 평균Dose DLP 452 mGy-cm WBC(5.4→5.1) 10³/mm³ 5.6% 감소, RBC(5.1→4.9) 10⁶/mm³ 3.9% 감소 Platelet(185.1→178.3) 10³/mm3 3.7% 감소, Lymphocyte(18.2%→17.8%) 2.2% 감소. 2) 500mGy~1000mGy-cm: (남: 27명, 여: 15명) 평균나이: 60.5세 평균 DLP Dose: 867mGy-cm WBC(5.8→5.2) 10³/mm3 10.3% 감소, RBC(4.5→4.2) 10⁶/mm³ 6.7% 감소 Platelet(191.4→183.2) 10³/mm3 4.3% 감소, Lymphocyte(20.9%→19.4%) 7.2% 감소. 3) 1000mGy-cm 이상 -(남: 30명, 여: 19명) 평균나이: 61.2세 평균 DLP Dose: 1356 mGy-cm WBC(5.7→4.6)10³/mm³ 19.3% 감소, RBC(4.7→4.3) 10⁶/mm³ 8.5% 감소, Platelet(154.2→135.4) 10³/mm³ 12.2% 감소, Lymphocyte(23.1%→20.3%) 12.1% 감소. 결론 CT검사 전과 검사 후 흡수선량의 범위에 따른 혈액수치를 비교해 본 결과 검사 전에 비해 WBC, RBC, Platelet Count, Lymphocyte 수치 모두 검사 후에 혈액수치가 감소하였으며 흡수선량이 높은 구간에서 혈액수치의 감소폭이 비교적 높게 나타나는 걸 확인할 수 있었다. I. Purpose Absorbed dose during CT examinations of patients according to blood tests before and after the test is divided into levels. According to the absorbed dose range for acute disorders To evaluate the relationship between changes in hematology. II. MATERIALS and METHODS May to July 2011 who underwent CT scans ward patients (M: 94, F: 63 people - average age 60.9 years) before checking into the center of one to two days after a blood test after the test results of blood tests were collected. Absorbed dose range(less than 500mGy, 500~1000mGy, more than 1000mGy) separate the patients with acute disorders of On the blood levels were compared. *Equipment used: GE Light speed VCT (Dose Report: DLP <mGy-cm>) III. Result 1. CT scans before and after the test (blood test within 1-2 days)127 People (M: 74, F: 53), Average age: 60.9, Average DLP Dose: 846 mGy-cm WBC(5.6→4.9) 10³/mm³: 12.5% reduction, RBC(4.8→4.5) 106/mm³: : 6.3% reduction, Platelet(176.9→165.6) 10³/mm³: 6.4% reduction, Lymphocyte(20.7%→19.2%): 7.2% reduction. 1) Less than 500 mGy-cm People(M:23, F:13) Average age: 60.2, Average DLP Dose: 452 mGy-cm WBC (5.4→5.1) 10³/mm³: 5.6% reduction, RBC(5.1→4.9) 106/mm³: 3.% reduction Platelet(185.1→178.3) 10³/mm³: 3.7% reduction, Lymphocyte (18.2%→17.8%): 2.2% reduction 2) 500 mGy~1000 mGy-cm People(M:27, F:15), Average age:60.5, Average DLP Dose: 867 mGy-cm WBC(5.8→5.2) 10³/mm³: 10.3% reduction, RBC(4.5→4.2)106/mm³: 6.7% reduction Platelet(191.4→183.2) 10³/mm³: 4.3% reduction, Lymphocyte(20.9%→19.4%): 7.2% reduction 3) More than 1000mGy-cm People(M:30,F:19) Average age: 61.2, Average DLP Dose: 1356 mGy-cm WBC(5.7→4.6) 10³/mm³: 19.3% reduction, RBC(4.7→4.3) 106/mm³: 8.5% reduction, Platelet(154.2→135.4) 10³/mm³: 12.2% reduction, Lymphocyte (23.1%→20.3%): 12.1% reduction. IV. Conclusion CT scans before and after the test to the range of absorbed dose results in blood levels were compared. Before the test, compared to the WBC, RBC, Platelet Count, Lymphocyte numbers in blood levels after checking all the Decreased. In particular, the higher the absorbed dose to blood levels were more significantly reduced actin know.
비전형적인 임상 양상을 보인 Trichophyton rubrum 감염증
최연상 ( Yeon Sang Choi ),이수근 ( Soo Keun Lee ),유희준 ( Hee Joon Yu ),손숙자 ( Sook Ja Son ) 대한피부과학회 1995 대한피부과학회지 Vol.33 No.3
Trichophyton rnbrum is a.nthropophilic, and the most common and widely distributed dermato phyte of man. Characterisic lions are circular, usually sharplyn ginated, slightly erythematous, dry, scaly patches with a raised edge. Progressive central clearin produces annular outlines. Other variants are reported, such as granulomatous, bullous or verucius. We reported a case of Trichophyton rubrum infection showing an unusual clinical manifest tin. The skin leison showed multiple discrete brownishouni macules with a fine scale on both hi lower legs, dorsum of feet and buttocks. Central clearing and inflammed border were not not. On KOH mount, fungal hyphae were noted and Techophyton rubrum was isolated on the funu culture. (Kor J Dermatol 1995;33(3): 585-589)