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이채형 ( Chae Hyeong Lee ),노주원 ( Ju Won Roh ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.9
Breast cancer has become one of the most significant health concerns not only in western countries but also in Korea. Screening is the most important method to reduce the mortality related to breast cancer. However, controversy remains about some aspects of breast cancer screening. Breast self-examination has been shown not to improve cancer-specific mortality, but it is commonly advocated as a noninvasive screen. Although the contribution of the clinical breast examination to early detection is difficult to determine, up to 10 percent of mammographically silent cancers can be detected by clinical breast examination. Major health organizations endorse mammographic screening every one to two years for women 40 years, and every year after age 50 as long as the woman is healthy. Although breast magnetic resonance imaging shows promise as a screening tool in high-risk women 30 years and older, it is not currently recommended for general screening because of high false-positive rates and costs. When applying guidelines to individual patients, risk assessment and clinical judgment including physical examination is needed to ensure appropriate management.
이채형(Chae-Hyung Lee),모성서(Sung-Seo Mo),강윤구(Yoon-Goo Kang),Kunihiko Nojima,김영호(Young-Ho Kim),국윤아(Yoon-Ah Kook) 대한치과교정학회 2007 대한치과교정학회지 Vol.37 No.1
본 연구의 목적은 한국인과 일본인의 Angle씨 I급, II급, III급 부정교합군에서 하악치열궁의 크기와 형태적 특성을 상호 비교 분석하는데 있었다. 한국인의 부정교합자 368명(I급 114명, II급 119명, III급 135명)과 일본인의 부정교합자 160명(I급 60명, II급 50명, III급 50명)을 대상으로 하였다. 치료 전 하악 치열 모형을 복사한 사진에서 13개의 인접한 접촉면에서 가장 협측에 위치한 점들을 좌표치화한 후 하악 치아의 두께 자료에 근거하여 임상 브라켓 점들을 설정하였고 4개의 선 계측과 이들을 이용하여 2개의 비율을 측정하였다. 각 부정교합군에서 측정 항목들에 관하여 t-test를 하였고 치열궁 형태를 square, ovoid, tapered 의 3가지로 분류한 후 분포 특성에 관하여 카이제곱 검정하였다. 그 결과 I급과 II급 부정교합군에서 일본 여성의 하악 치열궁 폭경이 일본남성, 한국 남성 및 한국 여성에 비해 작았으며, III급 부정교합군의 하악 치열궁 크기는 인종이나 성별에 따른 차이가 없었다. 그리고 모든 부정교합군에서 한국인과 일본인의 대부분이 square와 ovoid한 치열궁 형태를 가졌으며 II급 부정교합군에서는 일본인은 ovoid 형태가 52.%으로 가장 많고 한국인은 square 형태가 40%로 가장 많게 나타났다. Objective:The purpose of this study was to compare arch dimensions and frequency distribution of arch forms between Korean and Japanese Class I, II, and III malocclusion groups.<br> Methods:The sample consisted of 368 Korean cases (114 Class I, 119 Class II, and 135 Class III malocclusion) and 160 Japanese cases (60 Class I, 50 Class II, and 50 Class III malocclusion). The most facial portion of 13 proximal contact areas was digitized from photocopied images of the mandibular dental arches. Clinical bracket slot points were calculated for each tooth based on mandibular tooth thickness data. Four linear and two proportional measurements were taken. Measurements are statistically analyzed in each malocclusion group. The dental arches were classified into square, ovoid, and tapered forms to determine and compare the frequency distributions between the two ethnic groups.<br> Results:The findings of this study showed that Japanese females in Class I and II groups had a statistically significant narrower mandibular dental arch width compared with the Japanese males, Korean males and Korean females. But in the Class III group, there was no significant difference in the mandibular dental arch size according to the two ethnic groups and genders.<br> Conclusions: The majority of Koreans and Japanese in all the malocclusion groups exhibited square and ovoid arch forms. The most frequent arch forms found in Koreans was square but ovoid for Japanese.
최신임상강좌 : 부인과 영역에서 유전성 종양의 임상적 접근
이채형 ( Chae Hyeong Lee ),노주원 ( Ju Won Roh ) 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.1
Hereditary cancer syndrome is a genetic condition that causes and increases the risk for specific type of cancers. Recent advances in genetics have identified a number of genes associated with inherited susceptibility to cancer, and this rapid development of knowledge about cancer genetics have implications for all aspects of cancer management, including prevention, screening, and treatment. Hereditary patterns of cancer are often characterized by early age at onset, high penetrance, bilaterality in paired organs, vertical transmission through either parent, and an association with other types of tumors. Most representative hereditary cancer syndromes in gynecologic field are hereditary breast/ovarian cancer syndrome (HBOC), hereditary non-polyposis colorectal cancer (HNPCC), Li-Fraumeni syndrome, and Cowden syndrome. Several familial mutations of specific genes, such as BRCA1, 2, TP53, PTEN, MMR, CHEK2, are linked to hereditary cancer syndrome, which are responsible for hereditary gynecologic cancers. It would be very important for gynecologic doctors to know the inclusion criteria for the genetic assessment, taking family history, clinical evaluation, genetic testing, screening guideline and risk reduction strategies for women with hereditary high risk factor. The morbidity and mortality of gynecologic malignancies related to these syndromes could be reduced by the adequate clinical approach, although recent guidelines were developed with an acute awareness of the preliminary nature of much of our knowledge regarding the clinical application of the rapidly emerging field of molecular genetics, and with an appreciation for the need for flexibility when applying these guidelines to individual families.
그린 스마트 스쿨을 위한 공간 적응형 자율주행 공기청정 로봇 설계 및 구현
오석주,이채형,이채규 한국인터넷방송통신학회 2022 한국인터넷방송통신학회 논문지 Vol.22 No.1
The effect of indoor air pollution on the human body is greater and more dangerous than outdoor air pollution. In general, a person stays indoors for a long time, and in a closed room, pollutants are continuously accumulated and the polluted air is better delivered to the lungs. Especially in the case of young children, it is very sensitive to indoor air and it is fatal. In addition, methods to reduce indoor air pollution, which cannot be ventilated with more frequent indoor activities and continuously increasing external fine dust due to Covid 19, are becoming more important. In order to improve the problems of the existing autonomous driving air purifying robot, this paper divided the map and Upper Confidence bounds applied to Trees(UCT) based algorithm to solve the problem of the autonomous driving robot not sterilizing a specific area or staying in one space continuously, and the problem of children who are vulnerable to indoor air pollution. We propose a space-adaptive autonomous driving air purifying robot for a green smart school that can be improved. 실내공기오염이 인체에 미치는 영향이 실외공기오염보다 더 크며 위험하다. 일반적으로 사람은 실내에 머무는시간이 길고, 밀폐된 실내는 오염물질이 지속적으로 쌓여 오염된 공기가 폐에 더 잘 전달된다. 특히 어린 아이들의 경우실내공기에 매우 민감하며 치명적이다. 이와 더불어 코로나19로 인한 더 잦은 실내활동과 지속적으로 증가하는 외부미세먼지와 함께 환기를 못하는 현재 실내공기오염을 줄이는 방법은 더욱 중요해지고 있다. 본 논문은 기존 자율주행공기청정 로봇의 문제점을 개선하고자 지도를 분할과 UCT(Upper Confidence bounds applied to Trees) 기반의알고리즘을 통해 자율주행 로봇이 구역을 살균하지 않거나 한곳에 계속 머무르는 문제점과 실내공기오염에 취약한 아이들의 문제를 개선할 수 있는 그린 스마트 스쿨을 위한 공간 적응형 자율주행 공기청정 로봇을 제안한다.