• 제목/요약/키워드: Team-work

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자동차회사 근로자를 대상으로 한 근골격계 자각증상과 moire 영상 진단과의 관계 연구 (Research on the Relation between Musculoskeletal symptoms and Diagnosis using Moire Topography among Workers at an Automobile Manufacturing Plant)

  • 천은주;이영길;장두섭;이기남;송용선
    • 대한예방한의학회지
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    • 제5권2호
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    • pp.69-92
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    • 2001
  • The purposes of this study were to offer foundation making more certain standards of musculoskeletal disorder diagnosis, We researched musculoskeletal symptoms degrees, frequencies, and cares and then examined relation between musculoskeletal symptoms and diagnosis of musculoskeletal conditions using moire topography among workers at an automobile manufacturing plant. Therefore we propose the possibility of moire topography as diagnosing utilities of musculoskeletal disorders. Methods: This study was to examine the general characteristics, complaints of musculoskeletal symptoms, and work-related musculoskeletal disorder rates of cervicobrachial and lumbar area by survey among 435 workers at an automobile manufacturing plant and then to show each frequency and percentage, In the diagnosis using moire topography, we studied pain control necessity of cervicobrachial and lumbar area, 435 subjects were classified by 5 levels: A(no symptoms), B(need management), C(need treatment) and then more divided by B1(light symptoms)/B2(heavy symptoms), C1(light symptoms)/C2(heavy symptoms), And musculoskeletal areas were divided by 2 parts, cervicobrachial area(neck, shoulder, arm&elbow, and wrist&hand) and lumbar area, Then, frequency and percentage of each musculoskeletal areas(cervicobrachial and lumbar area) were appeared. At last, Pearson's chi-square test analysis was utilized to observe the relation between diagnosis using moire topography and general characteristics and the relation between diagnosis using moire topography and work-related complaint of musculoskeletal symptoms of cervicobrachial and lumbar area, Results: The subjects employed for this research were categorized into; by gender, all of them were males(l00%): by age, under 35 years 12 %, 36-40 years 56.3%, 41-45 years 26.3 %, and above 46 years 5.3% with 36-40 years accounting for most of it. By living location, owned houses represented 69.7%, rented houses 23.4%, monthly-rented 1.6%, the others 5.3%; by education, middle school and lower represented 3.0%, high school 89.4%, and junior college and higher 7.6% with high school occupying most of the group. By marital status, married represented 95.2%, unmarried 4.1%, and the others 0.7% with most of them married; by alcohol, drinking represented 81.8% and non-drinking 18.2%; by smoking status, smoking represented 53.6%, non-smoking 46.4% with no big difference between them. By working time(hours/week), below 50 represented 26.9%, 50-60 67.6%, above 60 5.5%; by working time(hours/day), below 9 represented 21.6%, 10-12 73.1%, above 13 5.3%; by job tenure(years), below 10 represented 25.1%, 11-15 54.3%, 16-20 15.2%, above 21 5.5%. By personal income per year, below 30 million won represented 11.0%, 30-40 84.8%, above 40 4.1%; by sleeping hours, below 6 hours represented 26.7%, 7-8 hours 69.9%, above 9 hours 3.4%. Complaint rates of musculoskeletal symptoms and work-related musculoskeletal disorder rates were 63.9% and 54.9% with shoulder area occupying most of both them. By pain degree of musculoskeletal symptoms, shoulder area represented $2.73{\pm}0.84$, lumbar area $2.66{\pm}0.86$, wrist and hand area $2.59{\pm}0.86$, neck area $2.55{\pm}0.74$, and arm and elbow area $2.48{\pm}0.71$. By cares about musculoskeletal symptoms, taking medication or care represented 34.4%-46.7%, absence or leave 15.4%-28.7%, and job transfer 6.3%-11.5%. So experienced cases more than one thing among cares about musculoskeletal symptoms represented 39.6%-54%. In the diagnosis using moire topography, pain control necessity of cervicobrachial area was shown below; A(no symptoms) 20.7%, B1(need management/light symptoms) 64.6%, B2(need management/heavy symptoms) 11.5%, C1(need treatment/light symptoms) 3.0%, C2(need treatment/heavy symptoms) 0.2%. By lumbar area, A(no symptoms) 8.7%, B1(need management/light symptoms) 52.2%, B2(need management/heavy symptoms) 30.3%, C1(need treatment/light symptoms) 8.7%, C2(need treatment/heavy symptoms) was none. In the relation between pain control necessity and general characteristics, age(P=0.013), education(P=0.000), and job tenure(P=0.012) with pain control necessity showed differences with significance. The relation between pain control necessity and complaint of musculoskeletal symptoms of cervicobrachial and lumbar area showed no difference with significance; in cervicobrachial area represented P=0.708, lumbar area P=0.318 Conclusions: This study for musculoskeletal symptoms on workers at automobile manufacturing plant showed that complaint rates of musculoskeletal symptoms for cervicobrachial and lumbar area were so high, 63.9%. But Pearson's chi-square test analysis was utilized to study the relation between musculoskeletal symptoms and the diagnosis using moire topography, showed no differences with significance. They have no differences with significance, but the prevalence rates of diagnosis using moire topography for cervicobrachial and lumbar area were more higher than complaint rates of musculoskeletal symptoms; complaint rates of musculoskeletal symptoms were 52.4%, 34.5% and the diagnosis using moire topography were 79.3%, 91.3% for cervicobrachial and lumbar area. The results of this study indicate that the diagnosis using moire topography can find weak musculoskeletal disorders that an individual can not feel, not be judged work-related musculoskeletal disease. Therefore, this study has an important meaning that diagnosis using moire topography can predict and control own physical condition complete musculoskeletal disorders beforehand, since oriental medicine theory considers that prevention is important.

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주민(住民)의 전통의술(傳統醫術) 이용도(利用度) 조사연구(調査硏究) - 민속요법(民俗療法) 이용(利用)을 중심(中心) 으로 - (A Study on the Utilization Level of Traditional Medicine by Residents - On the basis of Use of Folk Medical Techniques -)

  • 김진순
    • 농촌의학ㆍ지역보건
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    • 제13권1호
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    • pp.3-18
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    • 1988
  • The general objective of this research is to study behavioral pattern of health care utilization and to measure the level of utilization of the traditional medicine. The specific objective is to study utilization pattern and content of folk medicine which is the indegenous medical technology recognized part of traditional medicine. This research was under taken to generate valid information that will provide basis data for formulating general direction for health education activities and for designing service package for general population. A social survey method was employed to obtain required information for the research activities, The survey field team consisted of 20 surveyors who all participated is an intensive 2 day training course. A total of 3091 households were visited and interviewed by the field team during the period 7 September to 6 October 1987. The major findings obtained from the information collected by the field survey are as follows ; 1) General characteristics of the study households 2562 households out of 3091 households visited were selected for final data process, 80.2 of the selected households were nuclear families ; 17.4%, extended families ; others 2.4%. Only 4.3 percent of the study population in the urban households indicated "no schooling" whereas 14.2% of the rural household members falls within this category. Study population in the urban areas are more protected against diseases by the national medical insurance system than those in rural areas. In their self appraisal of living standard, those who responded with low group are 39.6% and 50.3% respectively by urban and rural households. 2) Morbidity status Period prevalence rate for all diseases during the preceding 15 days before the date of the household interview v as 243,0 per 1,000 study population. For cases with the illness duration of within 15 days, the initial points of medical entry were diversied ; 56.9%, drug stores ; 30.9%, clinics and hospitals ; 4.6% folk medicine ; 1.7% clinics of Korean oriental medicine. Among the chronic case; with illness duration of over 90 days, 34.6% of these people utilized clinics and hospitals of modern medicine ; 31.6%, drug stores ; 18.6% clinics of Korean oriental medicine ; 6.8% folk medical techniques. Noticeable is the almost ten fold increase from the mere 0.9% in the utilization of Korean oriental medicine, whereas in the utilization of folk medicine, it is short of two-fold increase. 3) Folk medicine and its utilization Households that use folk medicine for relief and care of signs and symptoms commonly encountered in daily life, number 1969 households, which accounts for 76.9% of all the study households. This rather high level use of folk medicine is not different from rural to urban areas. The order of frequency of utilizing folk medicine among the study people are : the highest 14.3% for the relief of indigestion ; 8.6% for burns ; 5.1% for common cold ; 4.7% for hiccough ; and 4.2% for hordeolum. A present various procedures of folk medicine is being used to relieve all kinds of symptoms. 192 symptoms are identified at present. The most frequently used procedures of folk medicine appear to be based either on principles of the Korean oriental medicine or of scientific knowledge. Based on these survey findings, proposals for utilizing folk medicine are as follows First, this survey's findings will be feed back to both on the job training and on the spot guidance of community health practitioners, public health nurses and other peripheral work force in the health field, who are in daily contacts with community. This feed back will assure that the health personnel carry out their health education and information activities that are based on the utilization pattern of folk medicine as found in the survey result. Second, studies will be soon implemented that are designed to measure the efficiency and potency of these procedures and to improve these procedures of folk medicine were most frequently used by the community. Third, studies will continue to systematize medicinal plants and skills of Korean oriental medicine that are easily available at minimal cost in daily life for the prevention of diseases and management of emergency cases.

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바이럴 마케팅용 애니메이션 뮤직비디오 제작 연구 : 월드컵 응원가 <일어나라 대한민국> 사례를 중심으로 (A Study on the animation music video production for the viral marketing purposes A case study of project)

  • 한상균;김탁훈;김유미
    • 만화애니메이션 연구
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    • 통권22호
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    • pp.47-63
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    • 2011
  • 현재 국내외 콘텐츠 산업은 미디어 플랫폼 형태의 진화와 함께 다변화되는 관객들의 기호에 맞춰 다양한 변화를 보여 왔으며 이러한 배경엔 컴퓨터와 네트워크의 발달이 함께 했다. 본 연구는 이러한 새로운 환경에서 탄생한 뉴미디어 플랫폼을 작품홍보를 위한 장으로 활용한 작품으로 스톱 모션 기법으로 제작된 2010 남아공 월드컵 주제가 <일어나라 대한민국>의 애니메이션 뮤직비디오 제작 사례를 분석하여, 이 작품에서 시도된 제작과 마케팅의 경제성을 살펴본다. 먼저, 총체적 비용 절감을 위해 <일어나라 대한민국>의 뮤직비디오는 일차적으로 제작과정의 단순화를 위해 하나의 퍼펫(puppet) 원형 모델을 여러 캐릭터에 중복 사용하여 모델 제작시간과 비용을 단축하였으며, 애니메이팅(animating)에 소요되는 시간을 단축하기위해 노래에 맞춰 환호하는 관객들의 동작을 반복되는 가사 "일어나라 대한민국"을 하나의 사이클로 완성해 같은 가사가 반복되는 부분마다 복사하여 사용하였다. 제작단계에서는 제작기간의 단축과 비용절감이라는 이슈 외에도 작품의 주 홍보매체인 UCC(User Created Contents)가 가지고 있는 바이럴 마케팅(viral marketing)의 효과를 기대하여 월드컵 시즌 상품으로 티셔츠를 제작 및 판매하기 위해 작품 내 캐릭터들의 의상이 디자인되었다. 이는 작품 내 캐릭터들의 의상이 매체를 통해 노출되고, 실제 인물들이 주는 친밀감이 티셔츠의 홍보와 연결되어 '크라잉 넛' 밴드의 팬을 주축으로 판매가 시도된 것이다. 결과적으로 판매 실적은 제작비를 충당할 만큼 충분치 못하였으나, 소규모 독립 애니메이션이 새로운 매체와의 결합으로 자생적 시스템을 갖출 수 있다는 가능성을 보여주었다는 점에서 이러한 시도는 주목할 만하다. 더욱이 새로운 미디어 환경에서 애니메이션 작품 내의 노출된 상품을 판매로 연결해 바이럴 마케팅(viral marketing)의 광고 효과를 적절히 활용하였다는 점에서도 국내 애니메이션제작 산업에서의 새로운 시도라 하겠다.

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Korean Practice Guidelines for Gastric Cancer 2022: An Evidence-based, Multidisciplinary Approach

  • Tae-Han Kim;In-Ho Kim;Seung Joo Kang;Miyoung Choi;Baek-Hui Kim;Bang Wool Eom;Bum Jun Kim;Byung-Hoon Min;Chang In Choi;Cheol Min Shin;Chung Hyun Tae;Chung sik Gong;Dong Jin Kim;Arthur Eung-Hyuck Cho;Eun Jeong Gong;Geum Jong Song;Hyeon-Su Im;Hye Seong Ahn;Hyun Lim;Hyung-Don Kim;Jae-Joon Kim;Jeong Il Yu;Jeong Won Lee;Ji Yeon Park;Jwa Hoon Kim;Kyoung Doo Song;Minkyu Jung;Mi Ran Jung;Sang-Yong Son;Shin-Hoo Park;Soo Jin Kim;Sung Hak Lee;Tae-Yong Kim;Woo Kyun Bae;Woong Sub Koom;Yeseob Jee;Yoo Min Kim;Yoonjin Kwak;Young Suk Park;Hye Sook Han;Su Youn Nam;Seong-Ho Kong;The Development Working Group for the Korean Practice Guidelines for Gastric Cancer 2022 Task Force Team
    • Journal of Gastric Cancer
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    • 제23권1호
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    • pp.3-106
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    • 2023
  • Gastric cancer is one of the most common cancers in Korea and the world. Since 2004, this is the 4th gastric cancer guideline published in Korea which is the revised version of previous evidence-based approach in 2018. Current guideline is a collaborative work of the interdisciplinary working group including experts in the field of gastric surgery, gastroenterology, endoscopy, medical oncology, abdominal radiology, pathology, nuclear medicine, radiation oncology and guideline development methodology. Total of 33 key questions were updated or proposed after a collaborative review by the working group and 40 statements were developed according to the systematic review using the MEDLINE, Embase, Cochrane Library and KoreaMed database. The level of evidence and the grading of recommendations were categorized according to the Grading of Recommendations, Assessment, Development and Evaluation proposition. Evidence level, benefit, harm, and clinical applicability was considered as the significant factors for recommendation. The working group reviewed recommendations and discussed for consensus. In the earlier part, general consideration discusses screening, diagnosis and staging of endoscopy, pathology, radiology, and nuclear medicine. Flowchart is depicted with statements which is supported by meta-analysis and references. Since clinical trial and systematic review was not suitable for postoperative oncologic and nutritional follow-up, working group agreed to conduct a nationwide survey investigating the clinical practice of all tertiary or general hospitals in Korea. The purpose of this survey was to provide baseline information on follow up. Herein we present a multidisciplinary-evidence based gastric cancer guideline.

서울시 보건소 물리치료사들의 지역사회중심재활에 대한 인식 (A Recognition for community Based Rehabilitation by Public Health Center Physical Therapists in Seoul Province)

  • 김찬문;홍완성;배성일
    • 대한물리치료과학회지
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    • 제5권1호
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    • pp.549-556
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    • 1998
  • To survey the recognition of Community Based Rehabilitation(CBR) by Public Health Center(PHC) Physical Therapists in Seoul Province. This study analysed general characteristic of Physical Therapists and cognition, participation, education, problems and requirements for CBR. The subjects of this study were 31 therapists who work at PHC in Seoul Province and Seoul City Childerns Municipal Hospital. Data was collected for 18 days from April 13 to 31, 1998 and results computed from 25 responses. First, Female therapists outnumber males. The age category 30 to 35 old represented 44.0% of the total number studied. 48.0% of therapists had worked more than 7 years and therapists usually 84.0% worked from 3 to 4 years at the PHC. Junior colleage graduates were 72.0%, and respondents with family responsibility were 52.0%. Second, Recently pain control and therapeutic exercises has become the major requirement of patients at PHC(56.0%). If the offered expanded services, a rehabilitation programe at PHC(36.0%) was highly. When asked about a working guide book, nobody had one. Third, 64.0% of therapists were aware of the present level of CBR, 28.0% of them had gotten an information from newspaper and mass media. Fourth, For CBR, 72.0% had positive ideas in which they could participate. 56.0% wished to compose a team of various rehabilitation specialists. 52.0% wished for the meeting day to be flexible and 64.0% desired to meet once or twice a week. Fifth, Almost all(92.0%) desired more educational opportunity about CBR. Example, once or twice a year(48.0%) and training period of 4 to 7 day(44.0%). They wanted to learn theory and parctice together(88.0%) and 48.0% wanted national mutirehabilitation center as a educational managing organization. Sixth, The most important requirement for accomplishing CBR by Physical Therapists was job security and adequate number of therapists(48.0%). Required number of physical therapists in the PHC was 3(52.0%). The cooperative agency should be the distict govement(32.0%) and community welfare center of the disabled persons(32.0%). Factors inhibiting the execution of CBR were lack of physical therapists(56.0%), and equipments for pain control and for therapeutic exercises(68.0%).

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콘텐츠 공급자의 양방향적인 소셜 미디어 활동 연구 사례: TV 드라마 <한니발>의 트위터 활동을 중심으로 (Interactive Usage of Social Media for Contents Provider : Focusing on Twitter Activities of the TV Series )

  • 남명희;유은순
    • 디지털콘텐츠학회 논문지
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    • 제16권4호
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    • pp.565-573
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    • 2015
  • 2000년대 소셜 미디어(Social Media)의 발달은 불특정 다수를 같은 주제 아래 연대하게 이끌었다. SNS(Social Network Service)는 각종 대중문화의 감상과 해석을 널리 공유하는 수단이 되었고, 특정 작품을 매개로 하여 사람들의 관계를 돈독하게 해 주었다. 본 연구는 그 구체적인 사례로 미국 TV 드라마 <한니발(Hannibal)>의 제작자와 수용자 간의 커뮤니케이션 양상을 소개한다. 드라마 제작자인 브라이언 풀러(Bryan Fuller)를 비롯한 주요 제작진은 시청자가 원하는 것이 무엇인지 알고 공감하는 수단으로 SNS를 적극 사용하였으며, 이는 시청자 수로는 소규모이지만 헌신적인 시청층에게 열렬한 화답을 받았다. <한니발> 제작진은 작품 공급자이기보다 작품을 즐기는 소비자로서 SNS를 사용했고, 이는 과거의 일방향 홍보와 매우 다른 접근법이다. 본 연구는 사례 연구를 통해 SNS가 제작자와 시청자의 중간 매개자, 혹은 정보의 허브로서 강력한 힘을 발휘하고 있으며, 인터랙티브 컨텐츠가 뉴미디어에서 어떤 방식으로 제공될 때 효과가 좋은지를 제시하였다.

경기도 보건소 물리치료사들의 지역사회심재활에 대한 인식 (A Recognition for Community Based Rehabilitation by Public Health Center Physical Therapists in Kyoungki Province)

  • 김찬문;정재훈
    • The Journal of Korean Physical Therapy
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    • 제10권1호
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    • pp.75-80
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    • 1998
  • To survey the recognition of Community Based Rehabilitation (CBR) by Public Health Center(PHC) Physical Therapists in Kyoungki Province. This study analysed general characteristic of Physical Therapists and congnition, participation, education, problems and requireanents for CBR. The objects of this study were 37 therapists who work at 27 of 39 PHC in Kyoungki province and data was collected for 20days from Jan. 12 to 31. 1998 and the results computed from 32 responses. First, Female therapists outnumber males. The age category 30 to 35 old represneted $56.2\%$ of the total number studied. $59.4\%$ of therapists had worked more than 7 years and therapists usually$(46.9\%)$ worked from 6 month to 2 years at the PHC. Junior college graduates were $84.4\%$, and respondents with family responsibilirt were $65.6\%$. Second, Recently pain control has become the major requirment of patiants at PH$(53.1\%)$. If they offered expaneded services - a rehabilitation program $(53.1\%)$, home vistation $(31.3\%)$. when asked about a working guide book, nobody had one. Third, $68.7\%$ of therapists were aware of the present level of CBR, $40.9\%$ of them had gotten an information from educated colleagues, and $68.7\%$ of therapists were aware of the present level of CBR, $86.4\%$ of therapists felt responsible to provide rehabilitation Fourth, For CBR, $93.7\%$ had positive ideas in which they could participate. $73.3\%$ wished to composed a team of various rehabilitational specialists. $73.3\%$ wished for the meeting day to be flexible and $86.6\%$ desired to meet once or twice a week. Fifth, Almost all$(96.9\%)$ desired more educational opportunity about CBR. Example, once or twice a year$(56.2\%)$ and training period of 4-7 days $(43.7\%)$. They wanted to learn theory and practice together$(74.2\%)$ and $74.2\%$ wanted the mational multi-rehabilitation center as a educational managing organization. Sixth, The most important requirment for accomplishing CBR by physical therapists was job security and an adequate number of therapists$(84.4\%)$ Required number of physical therapists in the PHC was 3 $(43.7\%)$. The cooperative agency should be the district goverment organization $(56.2\%)$. Factors inhibiting the execution of CBR were lack of administrative support, physical therapists, and equipments for pain control and for therapeutic exercise.

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1 kW 고체산화물 연료전지 스택의 내부개질 특성 연구 (Study on Internal Reforming Characteristic of 1 kW Solid Oxide Fuel Cell Stack)

  • 최영재;안진수;이인성;배홍열;문지웅;이종규
    • 한국수소및신에너지학회논문집
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    • 제28권4호
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    • pp.377-383
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    • 2017
  • This paper presents the performance characteristics of a 1 kW solid oxide fuel cell (SOFC) stack under various internal reforming and fuel utilization conditions. The Research Institute of Industrial Science & Technology (RIST) developed the 9-cell stack using a $20{\times}20cm^2$ anode supported planar cell with an active area of $324cm^2$. In this work, current-voltage characteristic test, fuel utilization test, continuous operation, and internal reforming test were carried out sequentially for 765 hours at a furnace temperature of $700^{\circ}C$. The influence of fuel utilization and internal reforming on the stack performance was analyzed. When the 1 kW stack was tested at a current of 145.8 A with a corresponding fuel utilization of 50-70% (internal reforming of 50%) and air utilization of 27%, the stack power was approximately 1.062-1.079 kW. Under continuous operation conditions, performance degradation rate was 2.16%/kh for 664 hours. The internal reforming characteristics of the stack were measured at a current of 145.8. A with a corresponding fuel utilization of 60-75%(internal reforming of 50-80%) and air utilization of 27%. As fuel utilization and internal reforming ratio increased, the stack power was decreased. The stack power change due to the internal reforming ratio difference was decreased with increasing fuel utilization.

건강검진 수진자들을 대상으로 한 식이 섭취와 혈중지질과의 상관관계 (Relationships Between Dietary Intake and Serum Lipid Profile of Subjects Who Visited Health Promotion Center)

  • 정미숙;배제헌;김양하
    • 한국식품영양과학회지
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    • 제37권12호
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    • pp.1583-1588
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    • 2008
  • 본 연구는 건강진단센터에서 건강검진을 받은 검진자 293 명을 고지혈증 치료지침 혈중지질 농도 기준에 따라 정상군, 경계군, 위험군으로 분류하여 신체계측, 혈액 성분 및 혈압, 영양소 섭취량을 조사하여 혈중지질 농도에 영향을 주는 요인을 분석하였다. 각 군별 체중, 체지방율, 허리둘레, 체질량지수 평균은 정상군에 비해 경계군, 위험군이 유의적으로 높았다. 열량 섭취량은 정상군 1,818.3 kcal, 경계군 1,803.0 kcal, 위험군 1,999.5 kcal로 정상군에 비해 위험군이 유의적으로 높았다. 에너지원인 탄수화물, 지질, 단백질 섭취량에 서 정상군에 비하여 위험군이 모두 유의적으로 높았다. 한편 연구대상자들의 혈중 중성지방 농도에 따라 영양소 섭취량을 비교한 결과 정상혈중중성지방군보다 위험혈중중성지방군인 대상자에서 열량, 탄수화물, 지질, 단백질 섭취량이 유의적으로 높았다. 영양소 섭취와 혈중지질 농도 간의 상관관계 분석 결과 열량, 탄수화물, 지질, 단백질 섭취량이 혈중 중성지방 농도와 양의 상관관계를 나타내었고, 탄수화물 섭취량과 혈중 HDL-콜레스테롤 농도는 음의 상관관계를 나타내었다. 결론적으로 본 연구에서 고지혈증 혹은 혈중 중성지방 농도가 높은 대상자들에게서 모두 열량, 탄수화물, 지질, 단백질 섭취량이 높게 나타나 우리나라 사람들의 고지혈증 요인 중의 하나가 과잉 식이섭취에 의한 것임을 알 수 있다. 따라서 성인의 건강한 혈중지질 농도를 유지하기 위해 과잉 식이섭취에 의한 비만을 예방하고 특히 적절한 지방 및 탄수화물의 섭취를 위한 영양교육이 필요할 것으로 사료된다.

확산텐서영상을 이용한 확산 주축의 고유치 영상 재구성 (Image Reconstruction of Eigenvalue of Diffusion Principal Axis Using Diffusion Tensor Imaging)

  • 김인성;김주현;연근;서경진;유돈식;강덕식;배성진;장용민
    • Investigative Magnetic Resonance Imaging
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    • 제11권2호
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    • pp.110-118
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    • 2007
  • 목적: 확산텐서자기공명영상(DT-MRI: Diffusion Tensor Image)을 이용하여 확산의 주축을 구성하는 세 성분에 대한 고유치 (eigefvalue)의 영상을 구현해 보고자 하였다. 대상 및 방법: 고유치 영상을 구현하기 위해서 3.0 테슬러 MRI(Magnetic Resonance Imaging)를 이용하여 확산텐서영상을 얻었으며, Moore-Penrose pseudo-inverse 방법과 SVD(single value decomposition) 방법을 이용하여 확산 주축을 계산하였다. 이 과정을 픽셀단위로 반복적으로 계산하여 새로운 확산 주축 영상들을 만들었으며, 이 확산 주축 영상들과 분할 비등방성 영상의 관계를 조사하였다. 결과: 확산텐서영상 기법으로 얻어진 확산텐서영상을 이용하여, 세 방향의 확산 주축에 대한 고유치 영상을 구성하였으며, 고유치 영상들과 분할 비등방성 영상을 함께 분석함으로써, 뇌의 해부학적 구조물에 따른 분할 비등방성 값의 차이를 확인할 수 있었다. 또한, 확산 주축에 대한 고유치의 변화에 대한 컴퓨터 모의실험에서, 변화하는 고유치에 따른 분할 비등방성 값의 변동 추이를 알아볼 수 있었다. 그리고 확산 주축의 크기가 비등방성을 좌우하는 것이 아니라, 세 확산 주축의 조합으로 비등방성의 정도를 표현한다는 것을 확인할 수 있었다. 확산 주축 방향의 고유치들을 분리하여 영상화 함으로써, 뇌의 병변에 의한 비등방성의 변화의 원인이 확산 주축의 어떠한 변화에 의해 발생하는 것인지 확인할 수 있을 것으로 기대된다.

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