• 전자공학회논문지CI
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• 제43권4호
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• pp.58-66
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• 2006

본 논문에서는 복잡한 배경을 갖는 동영상에서 얼굴의 윤곽선을 추출하기 위해 DCM(Dilation of Color and Motion information) 마스크와 동적 윤곽선 모델 (Active Contour Models; Snakes)을 적용한다. 먼저, 얼굴의 색상 정보와 움직임 정보를 모폴로지의 팽창과 AND 연산으로 결합한 DCM 마스크를 제안하여, 복잡한 배경이 제거된 얼굴 영역을 검출하고 영상 에너지의 잡음을 제거하기 위해 사용한다. 또한, 초기 곡선에 민감한 동적 윤곽선 모델의 단점을 극복하기 위해 얼굴 요소의 기하학적인 비율에 의해 추정된 회전정도에 따라 초기곡선을 자동으로 설정하고, 에지가 약한 부분에서의 윤곽선 추출을 위해 스네이크의 영상에너지로 에지강도와 밝기를 함께 사용한다. 실험을 위해, 복잡한 배경이 있는 실내 영상과 방송 영상으로부터 양 눈이 보이는 총 16명의 다양한 헤즈 포즈 영상을 총 480장 취득하였다. 결과적으로, 얼굴의 회전정도에 따라 보간된 초기곡선을 사용하고 에지강도와 밝기의 결합 영상에너지를 사용하는 경우에 평균 처리시간은 0.28초에서 보다 정교한 얼굴 윤곽선이 추출되는 것으로 나타났다.

• 한방안이비인후피부과학회지
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• 제35권1호
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• pp.91-104
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• 2022

Objectives : The objective of this study is to report a case of a male atopic dermatitis patient accompanying seborrheic capitis and nummular eczema improved by Korean medicine therapy and lifestyle modification. Methods : A male patient was hospitalized for eczematous lesions in the head, face, and both hands which relapsed on March 2021. For 15 days, he took Korean medicine therapy including acupuncture, Bangpungtongseongsan-gagam, pharmacopuncture, and wet dressing with Hwangryunhaedok-tang. Simultaneously, lifestyle correction also conducted during administration. On the other hand, corticosteroid and antihistamine were prescribed from internal medicine of our hospital for the first 10 days because of severe skin lesions. As an outpatient, he was continuously treated by the same Korean medicine therapy except herbal decoction weekly for about 7 months after discharge. To assess symptoms, scoring atopic dermatitis(SCORAD) index, taking photos, and numerical rating scale(NRS) were used. Results : After 15 days of hospitalization, the SCORAD index decreased to 30.0, which was about a half of the initial SCORAD index(61.2). NRS score also dropped from 6 to 3. Despite stopping western medicine administration, skin lesions and subjective symptoms of the patient were steadily improved without aggravation. For 7 months of continued outpatient treatment, atopic dermatitis were steadily ameliorated despite temporary aggravation and improvement of symptoms, and seborrheic capitis was not relapsed. The final SCORAD index and NRS on November 9th, 2021 were 24.7 and 1, respectively. Conclusions : These results suggests that Korean medicine therapy contributes to improving SCORAD index, subjective symptoms, and skin lesions of the patient. Furthermore, lifestyle modification is also important as much as proper treatment for caring atopic dermatitis patients.

• Journal of Acupuncture Research
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• 제21권1호
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• pp.202-210
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• 2004

Objective: In order to find oriental medical therapies on Parkinson's disease and to make a fundamental basis for clinical application, this study was performed. Methods: We reviewed 35 kinds of the ancient and modern text, and related articles. Results: Parkinson's disease is an extrapyramidal disease characterized by akinesia, tremor at rest, rigidity, and slowness of movement. In old oriental medical text, Parkinson's disease is described as Jinjeon(振顫), Chi, Gyeong (痙), Gyejong, Ryeon(攣) and Pyeongo(偏枯), Tantan, Jungbu(中腑症) of Jungpung(中風). According to the text, major pathological causes were Wind(風), Fire(火), Phlegm(痰), and Blood stasis(瘀血). And Parkinson's disease can be classified into four clinical types as liver & kidney yin-deficiency, qi & blood deficiency, retention of phlegm-heat, and qi-stagnation & blood stasis. Standardized acupuncture points are GV20, GB20, GV14 on head, CV12, ST25 on abdomen, GV26, ST7, GB1, S14, LI20 on face, LI4, LI11, TE5, SI3, HT3, LI15, SI6 on upper extremity, and ST36, GB34, SP6, LR3, KI1, GB30, BL40 on lower extremity. Other methods, such as scalp acupuncture, electro-acupuncture, and herb-acupuncture, can be applied to treat Parkinson's disease. Conclusions: We find out that there are oriental medical concepts related with Parkinson's disease such as Jinjeon(振顫), Chi, Gyeong (痙), Gyejong, Ryeon(攣) and Pyeongo(偏枯), Tantan, Jungbu(中腑症) of Jungpung(中風), of which major causes are Wind(風), Fire(火), Phlegm(痰), and Blood stasis(瘀血). We can also apply many effective acupuncture points and acupuncture therapies according to differential diagnosis, for example, liver & kidney yin-deficiency. qi & blood deficiency, retention of phlegm-heat, and qi-stagnation & blood stasis.

• The Korean Journal of Pain
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• 제7권2호
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• pp.162-169
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• 1994

Blockade of cervicothoracic sympathetic ganglion (stellate ganglion controls pain on face, head, neck, shoulder, upper limbs, and upper chest, including their viscera and sympathetically maintained pain. This procedure also increases blood flow to the above areas and relieves hyperreactivity of sympathetic nervous system. Clinically, repeated stellate ganglion blocks with local anesthetic agent may become difficult with complications such as accidental intravascular or subdural injection, recurrent laryngeal nerve or bracheal plexus paralysis, pneumothorax and edema on injection site. Therefore, at times long-term cervicothoracic ganglion block with neurolytics is necessitated but its applications are prohibited by the critical structures surrounding ganglion. There are also few reports of neurolytic stellate ganglion block. This study was performed to observe the complications, gross changes of surrounding structures, and microscopic findings of ganglion cells after neurolytic block and to certify the possibility of clinical use of neruolytic stellate ganglion block. The unilateral superior cervical sympathetic ganglion of rabbit was blocked with absolute ethyl alcohol 0.4 ml at the level of cricoid cartilage. Normal ganglion was used as a control and 5 animals were sacrificed at each intervals of 7, 15 and 50 days after block. The results were as follows; 1) All experimental animals showed no specific changes of behavior, motor function. No necrotic tissues were present in the block area during the observation period. There were some gross scar tissues along the fascia of muscles surrounding the needle injection site, but gross atrophy of muscles or injured major vessels were not found. 2) Microscopically, structures of normal ganglion of rabbit were very similar to those of humans. Seven days after absolute ethyl achohol injection there were marked edema of ganglion cells and nuclei with irregular nuclear membrane. Some of the ganglion cells lost their nuclei and showed degenerative changes. Fifteen days after block, cell edema were decreased and loss of the Nissl's body was prominant. The ganglion cell structures looked close to normal but the cytoplasm and nucleus were generally contracted 50 days after block. These results suggest absolute ethyl alcohol injection on cervical sympathetic ganglion with above method mainly blocks pre- and post-synaptic fibers and the long-term neurolytic blockade of this ganglion may be possible in rabbits.

• 전자공학회논문지
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• 제53권12호
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• pp.169-174
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• 2016

본 연구에서는 실제적인 환자의 모델을 바탕으로 가상현실 기반의 수술환경을 제작하는 방법에 대한 고찰과 함께 치과 임플란트 수술 술기를 배울 수 있는 가상현실을 활용한 수술 모델에 대한 평가를 시행하고자 한다. 환자의 안면 해부학적 모델은 실제 환자의 CT 데이터를 바탕으로 안면부위 골에 대한 삼차원 모델을 먼저 완성한 후 각각의 근육을 표현하고 안면부에 대한 삼차원 스캔 그리고 치아의 3차원 스캔 후 모델링을 통해 각각의 해부학적 구조물을 표현하였다. Unity3D를 활용해 단계별 시나리오를 게임으로 구성하였다. 처음 절개를 시행하는 단계에서부터 환자의 현재 상태에 필요한 상악동 거상술에 대한 술기를 표현하고, 임플란트 식립과정 그리고 골이식술을 하는 과정을 단계별로 포함하였다. 단계별로 중요한 과정의 효과적인 습득을 위해 HMD(Head Mount Display) 및 Leap motion과 연동하여 3차원 모델에 기구를 위치시키고 수술행위를 재현해볼 수 있게하여 몰입감을 높이면서 실제 수술을 하고있는 느낌을 재현하고자 하였다. 총 20명의 수련의를 대상으로 가상현실 시뮬레이션을 수행한 후에 설문조사를 시행하였다. 임플란트 수술 교육 프로그램은 치과 대학생들과 수련의들의 교육 도구로서 수술 술기를 습득하고 평가하는데 사용할 수 있는 가능성을 보여주었다. 통상적으로 수술 술기 교육 방법이 많지 않은 현실에서 HMD 와 Leap motion이라는 비교적 저렴한 기기를 이용하여 몰입감을 높일 수 있는 가상현실 기반의 수술 교육은 장점이 있다고 말할 수 있다.

• The Journal of Advanced Prosthodontics
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• 제5권1호
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• pp.9-15
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• 2013

PURPOSE. The purpose of this study was to determine accurately the part of the tragus to be used to form the Ala-Tragal line or Camper's line in orthognathic profile patients. MATERIALS AND METHODS. 150 dentate subjects with age of 18-40 years with orthognathic profile were sampled. Life-size lateral digital photographs of the face with fox plane were taken in natural head position. Different angles between Eye-Ear plane and occlusal plane ($OT_1$-OP), Eye-Ear plane and ala-superior border of tragus ($OT_1-AT_1$), Eye-Ear plane and ala-middle border of tragus ($OT_1-AT_2$) and Eye-Ear plane and ala-inferior border of tragus ($OT_1-AT_3$) were calculated using computer software package, AutoCAD 2004. From the three angles formed by the Eye-ear plane ($OT_1$ or FH plane) and the ala-tragal lines, the one closest to the angle formed between Eye-Ear plane ($OT_1$) and occlusal plane (OP) was used to determine the occlusal plane of orientation. The obtained results were subjected to ANOVA F test, Tukey's Honestly significant difference test, followed by Karl Pearson coefficient of correlation test. P values of less than 0.05 were taken as statistically significant. RESULTS. The mean of base line angle i.e. $OT_1$-OP angle ($11.96{\pm}4.36$) was found to be close to $OT_1-AT_2$ angle ($13.67{\pm}1.93$) and $OT_1-AT_3$ angle ($10.31{\pm}2.03$), but $OT_1$-OP angle was found to be more closer to $OT_1-AT_3$ angle. Comparison of mean angles showed that $OT_1$-OP angle in both males (11.68) and females (12.51) is close to $OT_1-AT_3$ angle (males- 11.01, females- 11.95). CONCLUSION. The line joining from ala to the lower border of the tragus was parallel to the occlusal plane in 53.3% of the subjects. There was no influence of the sex on the level of occlusal plane.

• 전자공학회논문지CI
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• 제44권1호
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• pp.56-63
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• 2007

본 논문은 신경망 (neural network: NN)과 mean-shift알고리즘을 이용하여 복잡한 배경에서 사용자의 눈을 정확히 추출하고 추적할 수 있는 눈 추적 시스템을 제안한다. 머리의 움직임에 강건한 시스템을 개발하기 위해서 먼저 피부색 모델과 연결 성분분석을 이용하여 얼굴영역을 추출한다. 그 다음 신경망기반의 텍스처 분류기를 이용하여 얼굴 영역(face region)을 눈 영역(eye region)과 비눈 영역(non-eye region)으로 구분함으로써 눈을 찾는다. 이러한 눈 검출 방법은 안경의 착용 유무에 상관없이 사용자의 눈 영역을 정확히 검출 할 수 있게 한다. 일단 눈 영역이 찾아지면 이후 프레임에서의 눈 영역은 mean-shift알고리즘에 의해 정확하게 추적된다. 제안된 시스템의 효율성을 검증하기 위해서 제안된 시스템은 눈의 움직임을 이용한 인터페이스 시스템에 적용되었고, 이 인터페이스를 이용한 'aliens game'이 구현되었다. 25명의 사용자에 대해 실험한 결과는 제안된 시스템이 보다 편리하고 친숙한 인터페이스로 활용될 수 있다는 것을 보여주었으며, 또한 $320{\times}240$ 크기의 영상을 초당 30프레임의 빠른 속도로 처리함으로써 실시간 시스템에 적용될 수 있음을 보여주었다.

• 대한소아치과학회지
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• 제30권3호
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• pp.341-347
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• 2003

Smith-Magenis syndrome(이하 SMS)은 제 17번 상염색체의 부분적 결손으로 발생하는 다발성 선천적 기형 및 정신지체를 특징으로 하는 증후군으로 1 : 25,000의 빈도로 발생하는 것으로 알려져 있다. 이 증후군은 작은 키와 단두증(brachycephaly)을 동반한 편평한 중안면, 처진 입, 종종 두드러지게 붉은 뺨, 성인에서 돌출된 턱 등의 특징적인 얼굴 생김새, 만성이염, 청각 손상, 사시와 근시를 포함한 눈의 이상, 목 쉰 소리, 짧은 손가락과 발가락, 심장 질환, 비뇨기 질환, 척추 만곡, 비정상적 걸음걸이, 통각에 둔감함 등의 신체적 특징을 지닌다. 특히 유아기에는 토실토실한 아기 얼굴, 행복한 기분, 드문 울음소리, 낮은 근 긴장도, 섭식 장애 등의 특징이 있다. 수면 장애를 포함하여 언어 지체 및 발음 장애, 발달지체, 학습 장애, 정신지체, 활동항진과 자해, 폭발적 분노, 지속되는 짜증, 파괴적이고 공격적인 행동, 흥분성, 흥분시에 팔로 안거나 손을 끼우는 행동 등의 행동 발달적 특징을 나타낸다. 본 증례는 3세 3개월된 남아로 생후 10개월에 SMS를 진단받은 환자로 상악 좌측 제 1유구치의 통증을 주소로 본과에 내원하였으며, 임상 및 방사선학적으로 다발성 우식증을 보였으며, 소아과 주치의에게 의뢰한 결과 심내막염의 예방을 위한 항생제의 처치를 처방 받고, 환아의 행동 발달적 문제로 인해 물리적 속박의 방법 하에 외래에서 치료되었다. 이 증례를 통해 SMS라는 희귀한 증후군에 관하여 보고하고자 한다.

• 대한의료기공학회지
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• 제11권1호
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• pp.144-172
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• 2009

objectives : This research aimed to study the similar effects between Jwahun and Sojucheon_practice, as both Induces to SooSengg-HwaGang(the coordination of water and fire). methods : 141 recipients of the survey was conducted in the Jwahun room of Korean medicine Hospital, which contained to body reaction between the moment of the Jwahun and after the Jwahun. And the result of them compared with the body's response of Sojucheon_practice results : 1. In a survey, 78% of the patients had responses that were sweating. The area sweating a lot in the survey is the face, abdomen, chest and was, in this order, the ratio was high. About feeling of warmth and coolness, survey of those who felt the warmth ratio was 79%, those who did not feel the coolness ratio was 77%, most of the responses were warm bodies. 46% of patients replied that feels warm in the belly. It said the fact that Jwahun directly to the lower body is to warm. 2. Symptoms of congestion of the head on the survey, 78% of investigators did not appeal. Other investigators were responding they were dizzy. Research on pain and itching, but no response was at 84%. Among the responses to the itchiness, itching perineum was 11% of the respondents. The rest was weak. 3. Associated with defecation in the survey, the investigators found that 33% of respondents said fart. Urine is 22% of respondents said. Abdominal reactions, 33% of respondents answered was taking a tone in the abdomen. In response to the whole body reaction, the most relaxing 39% of the respondents said, 22% of respondents replied that the body feel lighter. 4. After Jwahun, belly is warm and cathartic reactions were the most responsive. This said that Jwahun even after, in the lower abdomen lasting warmth as can be seen. Smooth bowel movements disproves the abdominal organs is a good move. It will also be seen in the same context of bowel movements, abdominal response when just doing Jwahun. conclusions : Jwahun activate the meridians and through the perineum stimulation induced imdokmaek(任督脈) SooSengg-HwaGang(水升火降) to enable the training and some Sojucheon can have similar effects.

• Tuberculosis and Respiratory Diseases
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• 제41권1호
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• pp.58-62
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• 1994

저자들은 폐렴간균 폐렴에 의한 우상엽의 용적 증가로 인하여 유발된 상대정맥 증후군 1예를 임상 경험한후 medline검색상 SVCS의 유발 원인으로서 폐렴간균 폐렴은 최초의 증례로 사료되므로 이에 보고하는 바이다.