• 한국의학물리학회지:의학물리
• /
• 제23권1호
• /
• pp.62-69
• /
• 2012

적응 방사선 치료(Adaptive Radiation Therapy, ART)를 실행하기 위한 매 치료 마다 획득되는 Megavoltage cone-beam CT (MVCBCT) 영상을 이용한 재 선량 계산 과정은 필수적이다. 본 연구의 목적은 intensity 보정 방법을 적용한 MVCBCT 영상 기반의 선량 계산 결과와 kilo-voltage CT (kV CT) 영상 기반의 선량 계산 결과의 비교 및 MVCBCT 영상 기반의 선량계산 정확성의 향상이다. MVCBCT 영상의 intensity 교정을 위해 kV CT와 MVCBCT을 이용하여 12 종류의 전자밀도 바를 제공하는 Cheese 팬텀 영상을 획득하고, Cheese 팬텀 영상의 동일한 전자밀도 바에서 표현되는 kV CT 영상과 MVCBCT 영상의 intensity 관계를 도출하였다. 이후 kV CT, MVCBCT를 이용한 Rando 팬텀 영상을 획득하여 MVCBCT 영상은 3차원 강체 정합을 수행하였고 본 과정을 통해 MVCBCT 영상은 kV CT 영상과 마치 동일한 모달리티에서 획득한 영상과 같은 위치 및 intensity 분포로 변환되었고, MVCBCT 영상의 잡음을 없애기 위한 Gaussian smoothing 필터를 적용하였다. 위의 과정을 거친 MVCBCT 영상을 토대로 intensity 교정을 적용한 영상과, intensity 교정을 적용하지 않은 영상, kV CT영상을 기반으로 방사선 치료 계획 시스템을 이용한 선량 계산을 시행 하였다. 선량 계산의 결과는 선량 분포의 차이 및 Percentage difference로 평가되었다. Intensity 보정을 적용한 MVCBCT 영상의 선량 계산 결과의 경우 kV CT 영상 기반의 선량 계산 결과와의 Percentage difference가 두경부 영상의 경우 1.08%, 흉부 영상의 경우 2.44%였다. 본 연구에서 적용한 intensity 변환을 통해 MVCBCT 영상을 이용한 선량 계산의 정확성이 향상됨을 확인하였고, 본 연구 방법은 실제 선량 계산에 적용 및 사용의 편리성을 확인하였다. 차후 연구 계획도 본 연구 내용에 의해 제안되었다.

• Investigative Magnetic Resonance Imaging
• /
• 제18권3호
• /
• pp.219-224
• /
• 2014

목적: 무릎관절 자기공명영상에서 내측 반월상연골 전각의 끝이 잘린 삼각형 모습 (truncated triangle appearance)의 빈도와 그 임상적 가치에 대하여 알아보고자 하였다. 대상과 방법: 위 연구는 기관윤리심의위원회 (IRB)의 승인을 받았으며, 사전동의를 받아 진행하였다. 가성방사파열로 판단하는 기준은 내측 반월상연골 전각부터 중심부에서 끝이 잘린 삼각형 모습과 뭉툭해진 끝 주변에 물과 같은 신호강도가 한 개 또는 그 이상의 관상면 영상에서 보일 경우로 하였다. 두 명의 근골격계를 전공한 영상의학과 의사가 후향적으로 485개의 무릎관절 자기공명영상을 독립적으로 내측 반월상연골의 가성방사파열의 유무와 위 소견이 보이는 영상의 개수를 자기공명영상의 양자밀도강조 관상영상을 이용하여 평가하였다. 관찰자간 일치도와 관찰자내 일치도는 카파 계수로 평가되었고, 관절경 소견과 연관시키기 위하여 의무기록을 참조하였다. 결과: 내측 반월상연골의 가성방사파열은 381명 (78.6%)의 환자에서 관찰되었다. 병변의 위치는 내측 반월상연골의 전각에 112명 (29.4%), 전각부터 중심부에 143명 (37.5%), 중심부에 126명 (33.1%)에서 각각 나타났다. 가성방사파열의 소견이 보이는 연속적인 단면 영상의 개수는 100명 (26.2%)에서 1개, 164명 (43.0%)에서 2개, 94명 (24.7%)에서 3개, 21명 (5.5%)에서 4개, 2명 (0.5%)에서 5개로 각각 나타났다. 관찰자간 일치도는 병변의 유무에 대해서는 0.99, 가성방사파열의 소견이 보이는 단면영상의 개수에 대해서는 0.43로 각각 나타났다. 관절경은 96명의 환자에서 시행되었고, 관절경상에서 모든 내측 반월상연골은 정상소견을 보였다. 결론: 무릎 자기공명 관상면 영상에서 내측 반월상연골의 전각과 중심부의 가성방사파열은 흔히 보이는 소견으로써 실제 방사파열과 감별이 필요한 영상의학과 의사가 알고 있어야 할 진단상 함정으로 사료된다.

• 한국의류학회지
• /
• 제29권7호
• /
• pp.1008-1017
• /
• 2005

When we develop 2D pattern from replica of human body with small pieces, it is inevitable to have some replica pieces overlapped or departed. In this study, the optimized method of 2D pattern development from the 3D replica pieces was investigated using dress-form. Among six arrangement methods, anchoring two vertexes of a replica to neighboring vertexes of a next replica induces the optimized 2D pattern by evenly distributing stress across the 3D replica pieces. Anchoring neighboring vertexes resulted in automatic widening k overlapping (W & O) the interspaces among replicas of dress-form, thereby stress was distributed more evenly than any other method. W&O arrangement method was verified to be the best by examining the 3D space distribution images between body surface and twelve experimental garments.

• 한국간호교육학회지
• /
• 제11권2호
• /
• pp.200-205
• /
• 2005

Purpose: This descriptive study was designed to investigative BMI(body mass index) and health behaviors in college students. Method: The subjects of this study consisted of 189 college women and 125 college men. Data were collected using self-report questionnaires from April 1 to April 10, 2005. Data were analyzed by the SPSS /pc 10.0 statistical program using frequency, t-test, $x^2$-test. Result: College women perceived themselves as more obese than indicated their BMI, and the most effective weight control factor was their response to images of people presented in the media. In general college men present more salubrious behavior than college women. Conclusion: The results suggest that health care providers need to educate female students about heathy behavior as well as the normal weight in BMI.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1995년도 추계학술대회 논문집
• /
• pp.903-906
• /
• 1995

In this paper,human body models have been manufactured by the use of rapid prototyping techniques, which are to be used for surgery planning in clinical practice. In this manufactacturing process, CT or MRI data of human bodies are prepared and the images are processed to obtain sectional contours. With these contours, three-dimensional surface triangulated models are constructed, which finally transformed to STL file for rapid prototyping. For this purpose, total service system for manufacturing of human body models is constructed by employing commercial softwares, and the related problems and process parameters are investigated

• ETRI Journal
• /
• 제39권2호
• /
• pp.181-190
• /
• 2017

The movements of the human body are difficult to capture owing to the complexity of the three-dimensional skeleton model and occlusion problems. In this paper, we propose a motion capture system that tracks dynamic human motions in real time. Without using external markers, the proposed system adopts multiple depth sensors (Microsoft Kinect) to overcome the occlusion and body rotation problems. To combine the joint data retrieved from the multiple sensors, our calibration process samples a point cloud from depth images and unifies the coordinate systems in point clouds into a single coordinate system via the iterative closest point method. Using noisy skeletal data from sensors, a posture reconstruction method is introduced to estimate the optimal joint positions for consistent motion generation. Based on the high tracking accuracy of the proposed system, we demonstrate that our system is applicable to various motion-based training programs in dance and Taekwondo.

• 한국의류학회지
• /
• 제25권4호
• /
• pp.783-794
• /
• 2001

This research focuses its study on the expressions of the visual images of the fashion illustration as a part of visual art and utilizes it to formulate the theoretical basis. Main findings of our research are as follows: The structure of communications in the fashion illustration is based on the four elements. They are the expression of the texture, drawings, composition, and the human body and dress. The characteristics in expression of texture level in fashion illustration can be the expression of creative texture in pattern or crease, and also can be expressed as various collage and photomontage by computer graphics. Secondly, the analysis on the characteristics of the drawings show that the drawing skills are imagination and sequential drawings. Thirdly, the characteristics of composition method are mainly shown as the application of plane composition which was previously used in avant-garde arts. Fourthly, most of the human body in the fashion illustrations are shown as the results of simplification, exaggeration and deformation in human body and also expressed or analyzed by the method of the body modification. Based on the above findings of this research we conclude that the way of expression in the fashion illustration is very similar in its composition as in visual art. However, they also show differences between the two in expression method or the method for the image development in specific expressions.

• 한국실내디자인학회논문집
• /
• 제26권2호
• /
• pp.55-63
• /
• 2017

Recent projects of Japanese architect, Ito Toyo have been evolved into innovative and experimental stages that are unique and different from other contemporary architects. Since Ito established his own office in 1971, there were several critical changes and developments in terms of architectural philosophy as well as design methods. Particularly, after Sendai Mediatheque, Ito has tended to focus on creating three-dimensional organic body in which architectural form, space, structure, facilities, images are merged all together. With this new type of three-dimensional structure, Ito aims to generate a new notion of architecture as 'living organism'. This paper tried to analyze Ito's new concept of architecture, design process of three-dimensional organic body and its ultimate characteristics and meanings. For the analysis, three projects were selected: Taichung Metropolitan Opera House(2005), Berkeley Art Museum and Pacific Film Archive(2007), The New Deichman Library in Oslo(2008). These projects clearly represent several types of three-dimensional organic body. After the comparative studies, it is found that, in Ito's design process and method, there are unique characters: ambivalent relationship between plan and three-dimensional form, aiming new/hyper reality through complicated collaboration of analogue and digital design tools, and contradictory relationship with surrounding urban context. Although there are some limitations and restrictions, ever-evolving Ito's design concept and methods are very much valid and meaningful in contemporary spatial design in various perspectives.

• 복식
• /
• 제57권2호
• /
• pp.143-154
• /
• 2007

This study's purpose is how express gender image according to sex in editorial fashion photography. This study's objectives are the women's magazine Vogue, Harper's Bazaar and man's magazine GQ, Esquire published 2000-2005 within the country. The photography was classified with established a standard based on the precede studies. The photo is classified Gender image according to dress and its ornaments, model character and atmosphere by Sex Expression of femininity woman has exposure of body parts and emphasizing thin eyebrows and red lips, soft and mild image, modest and static pose. Man expressed femininity used ladylike color and pattern, erotic exposure of body and long hair style. Commonly emphasizing red lips, natural background of flower plant, S-line. For expression of masculinity man and woman are used masculinity item, short hair-style and thick eyebrows. And also emphasize square like chin and shoulder. Specially, woman used direct silhouette to conceal soft body curved line. The expressions of androgynous woman and man are colorful dress and make-up. Woman emphasized male face to show and man expressed soft image through hull of abundant material of fur. All two sex selected method that conceal body curved line and face to express sexless. Hiding characteristics of body and face make indistinct of sex. The gender is affected by atmosphere such as model and illumination background as much as clothes because of the editorial fashion photography.

• 패션비즈니스
• /
• 제12권2호
• /
• pp.153-164
• /
• 2008

The author of this study would like to consider the influence that socio-cultural attitudes to the appearance offemale college students have on body image and satisfaction. The results of this study were as follows: 1. According to the result of the analysis of the relevant factors of socio-cultural attitudes on outward appearance of women college students, three factors which are named "Internalization", "Awareness" and "Non-confirmity" have been drawn out: 2. According to the result of the factor analysis for the evaluation of the behavioral figure images of women college students, three factors which are named "Figure Management", "Weight Management" and "Figure Valuation" have been drawn out: 3. Socio-cultural attitudes to appearance have correlation with body image, BMI and self-satisfaction of body and appearance: 4. According to consideration of the result of the study of the Influence that socio-cultural attitudes to the appearance have on physical satisfactionof each physical part, it is showed that they have managed their physical weight according to the satisfaction degree of weight and other circumference items: 5. Socio-cultural attitudes to appearance have high correlation with appearance management and weight management.