• 제목/요약/키워드: Facial analysis

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3차원 CT 영상을 이용한 정상교합자의 안면 연조직 계측 분석 (Facial soft tissue measuring analysis of normal occlusion using three-dimensional CT imaging)

  • 한수연;백형선;김기덕;유형석
    • 대한치과교정학회지
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    • 제35권6호
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    • pp.409-419
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    • 2005
  • 최근 들어 3차원 전산화 단층 촬영(CT, Computed Tomography) 영상을 이용한 진단기법의 개발을 위한 연구가 활발히 진행되고 있으며 여러 분야에서 3차원적인 두개악안면 분석의 필요성이 증대되고 있다. 특히 교정 치료나 악교정 수술 후의 결과에 있어서 안면 연조직의 분석은 필수적이라 할 것이다. 본 연구에서는 정상교합을 가진 성인 남자 12명, 성인 여자 11명의 CT 영상을 촬영하여 개인용 컴퓨터 상에서 V works 4.0 프로그램(Cybermed Inc., Seoul, Korea)으로 3차원 CT 연조직 영상을 재구성한 후에 soft tissue Nasion을 기준 원점으로 하는 3차원 좌표평면의 좌표계를 설정하여 정중선상의 soft tissue Nasion. Pronasale, Subnasale, Upper lip center, Lower lip center, soft tissue B. soft tissue Pogonion. soft tissue Menton 등 8개의 계측점과 양측성인 Eudocanthion, Alare lateralis, Cheilion, soft tissue Gonion, Tragus. Zygomatic point등 총 20개의 재현 가능한 안면 연조직의 계측점을 지정하였으며 V surgery 프로그램(Cybermed Inc., Seoul Korea)을 이용하여 이들 계측점의 3차원적인 좌표와 기준 원점으로부터 각 계측점까지의 Net (${\delta}=\sqrt{{X^2}+{Y^2}+{Z^2}}$) 값의 평균과 표준편차를 구하였다. 안면 연조직 분석의 3차원적인 이해를 돕기 위해 주요 계측점 간의 거리 계측을 시행하였고, 그 결과 Na'-Sn과 En (Rt)-En(Lt)를 제외한 대부분의 계측값에서 남녀간의 유의한 차이가 있었으며, 2차원적인 두부 방사선 규격사진이나 안면 사진으로는 정확한 계측이 어려웠던 Na'-Zy, Na'-Ch, Na'-Go'(facial depth) 등의 정상치도 구하였다. 이상의 자료는 부정교합 환자와 악안면 기형 환자의 3차원적인 진단 및 치료 계획에 참고자료로 사용될 수 있을 것이다.

한 대학병원에서 분석한 재발 벨마비 환자의 임상양상 (Clinical Analysis of Recurrent Bell's Palsy in One University Hospital)

  • 김창형;이동국
    • Annals of Clinical Neurophysiology
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    • 제15권1호
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    • pp.1-6
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    • 2013
  • Background: Bell's palsy (BP) is the most common cause of unilateral lower motor facial palsy. Recurrent paralysis of the facial nerve is unusual and reported in only 7-8%. Methods: A total of 394 consecutive patients with acute BP patients were enrolled at Daegu Catholic University Hospital from July 2005 to September 2012. We classified the patients into two groups-single BP and recurrent BP-and compared them by patient characteristics, clinical features, MRI findings, electrophysiologic findings and prognosis. The degree of BP was graded according to the House and Brackmann facial nerve grading system. Results: Recurrent BP was observed in 31 (7.9%) patients. The number of recurrence was varied from 2 to 5. The recurrent BP (9.7%) had more incidence of family history and MRI enhancement than those of single BP (2.2%, p=0.047). The single BP (63.4%) had better recovery than recurrent BP (45.2%, p=0.045). Conclusions: The recurrent BP had more incidence of family history, MRI enhancement and poor prognosis than the single BP.

얼굴표정과 음성을 이용한 감정인식 (An Emotion Recognition Method using Facial Expression and Speech Signal)

  • 고현주;이대종;전명근
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제31권6호
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    • pp.799-807
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    • 2004
  • 본 논문에서는 사람의 얼굴표정과 음성 속에 담긴 6개의 기본감정(기쁨, 슬픔, 화남, 놀람, 혐오, 공포)에 대한 특징을 추출하고 인식하고자 한다. 이를 위해 얼굴표정을 이용한 감정인식에서는 이산 웨이블렛 기반 다해상도 분석을 이용하여 선형판별분석기법으로 특징을 추출하고 최소 거리 분류 방법을 이용하여 감정을 인식한다. 음성에서의 감정인식은 웨이블렛 필터뱅크를 이용하여 독립적인 감정을 확인한 후 다중의사 결정 기법에 외해 감정인식을 한다. 최종적으로 얼굴 표정에서의 감정인식과 음성에서의 감정인식을 융합하는 단계로 퍼지 소속함수를 이용하며, 각 감정에 대하여 소속도로 표현된 매칭 감은 얼굴에서의 감정과 음성에서의 감정별로 더하고 그중 가장 큰 값을 인식 대상의 감정으로 선정한다.

모자제작을 위한 여자 머리 계측에 관한 연구 (A Study on the Measurement of Korean Women′s Head for Headgear Pattern Making)

  • 안영실;서미아
    • 복식문화연구
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    • 제12권5호
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    • pp.743-756
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    • 2004
  • The purpose of this study is to set measurement parts which are important to identify the size and shape of the head in order to produce tightly fitted hats, and to identify detailed sizes and the major factors of head shape classifications of Korean women. A total of 285 Korean women's in the age group of 18 to 35 years old. It were measured through the direct measurement method by selecting 67 measurement items. Materials were analyzed by SPSS Ver.10 and technology statistics and factor analysis were performed according to the agenda. An attempt was made to conduct factor analysis of the measured region of the head in women's. Here, this study drew the head and the facial parts horizontal size as Factor 1, the head and facial parts vertical size as Factor 2, the circumference and width item as Factor 3, the factor representing the form of head height as Factor 4, the factor expressing the proportion of the facial form as Factor 5 and the factor about the frontal and back head form on the plan of the middle as Factor 6. Through this study, we will be able to systemize head measurement materials that can differentiate Korean's head from other peoples' and can use the results in developing head shape models according to Korean's head shape by selecting major head parts needed to identify the sizes and shapes.

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신장 이혈 상응점 자극에 따른 얼굴 색상 기반의 신장 기능 상태 분석 (Analysis of Kidney Function States Based on Face Color Observation by Kidney Ear Acupuncture Point Irritation)

  • 김봉현;조동욱
    • 한국통신학회논문지
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    • 제35권12B호
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    • pp.1192-1198
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    • 2010
  • 삶의 질이 향상되면서 현대 사회에서는 건강에 대한 관심도가 높아져 질병이 발생되기 전에 조기에 진단하여 예방하는 대체의학이 건강 패턴의 중심으로 자리잡고 있다. 이러한 대체의학 중 귀에 침을 자입하여 치료를 하는 것이 이침(耳針)요법이다. 따라서 본 논문에서는 신장과 관련된 이(耳)혈 상응점을 자극하여 신장의 기능이 향상되는 것을 얼굴 영역 색상 분석 기반 기술의 적용으로 실험을 수행하였다. 이를 위해 동일한 조건에서 시행되는 신장 이혈 상응점을 자극하기 전과 후의 얼굴 영상을 수집하였다. 수집된 얼굴 영상에서 신장과 관련된 지각 부위에 대해 CMYK 색체계 중 K값과 Lab 색체계 중 L값의 변화율을 추출, 분석하여 신장 기능의 향상 정도를 실험하는 연구를 수행하였다.

구안와사 환자의 12경맥 전위측정 연구 (Differences in Electric Potential of Meridian System -Comparing Electrical Potentials of Patients with Facial Hemiparalysis-)

  • 최환수;남봉현
    • Journal of Acupuncture Research
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    • 제21권6호
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    • pp.111-120
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    • 2004
  • Objective : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea (合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 13 patients with Facial Hemiparalysis (구안와사<口眼蝸斜>, FH), to find out the characteristic of meridian system in patients with AK. Methods : Electric potentials of well and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as FH were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results : The electric potentials of WSBTM at the left side were divided into five factors. On the other hand those at the right side Were divided into four factors. Conclusions : In conclusion, their electrical potentials at the left and right side were each other five and four factors. Thus electrical potentials of well and sea points might be the representative meridian to show their characteristics.

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악안면 기형환자에서 내측 익돌근 근력측정 및 의미분석 (Analysis of the resistant muscle force against distraction in the maxilla-facial deformities)

  • 정필훈;홍종락;배용철
    • 대한구순구개열학회지
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    • 제4권2호
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    • pp.45-50
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    • 2001
  • Recents reports have demonstrated that force and direction is important during mandibular distraction osteogenesis. The purpose of this study was to evaluate the resistant force of internal pterygoid muscles and inquire into relationship between internal pte'Ygoid muscles and cephalometric parameters. Eighty four patients with class III malocclusion underwent bilateral sgittal splitting of ramus with intraoral vertico-sagittal ramal osteotomy. A spring scale were used for measuring for resistence of internal pterygoid mescles after splitting of ramus. Skeletal-dental cephalometric analysis was made following statistic package was used for correlation between resistence and cephalometric parameters. The resistant force of right internal pterygoid muscle was greater than left muscle in Korean with class III malocclusion and the force had a linear regression relationship with facial depth (distance between nasion and gonion). The results suggested that facial depth has significant correlation of the resistance of internal pterygoid muscle (p<0.05).

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Pharmacopuncture for Acute peripheral facial paralysis: A systematic review and meta-analysis of randomized controlled trials

  • Choi, Min-Sun;Kim, Dong Il;Jang, Su Hee
    • 대한한의학회지
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    • 제36권2호
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    • pp.8-20
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    • 2015
  • Objectives: This study aims to evaluate the efficacy of pharmacopuncture in the treatment of acute peripheral facial paralysis (APFP) through a meta-analysis of randomized controlled trials to assess the clinical evidence for pharmacopuncture as a treatment for PFP. Methods: Literature was searched using databases. The search terms used were "pharmacopuncture," "sweet BV," "apipuncture," "apitoxin," "injection acupuncture," and "herbal acupuncture" in English and "bongchim," "bongyakchim," and "yakchim" in Korean. The RevMan 5.2 program was used for meta-analysis. Results: In all, 1902 studies were screened and the full texts of 219 articles were reviewed. Of these, nine studies were included in the systematic review and nine studies were included in the meta-analysis. Treatments utilizing bee venom, sweet bee venom (SBV), Soyeom, Calculus Bovis Fel Ursi Moschus (BUM), Hominis Placenta, and Suseunghwagang (SSHG) were observed in nine RCTs. In the forest plot, the diamond favors the PA treatment against the control treatment. (95% CI: 0.34 [0.08, 0.60], Z = 2.57, P = 0.01), which Our meta-analysis in RevMan 5.2 confirmed the significant efficacy of PA in treating APFP. Conclusion: Our systematic review and meta-analysis suggest that treatments using Soyeom, bee venom, and BUM are effective in APFP and they reduce the duration of postauricular pain occurring at the acute stage of APFP. However, due to small effect size, further investigation is needed.