관절경을 이용한 족관절의 골연골병변의 치료

이명철,성상철,강승백 ( Myung Chul Lee,Sang Cheol Seong,Seung Baik Kang ) 대한슬관절학회 1993 대한슬관절학회지 Vol.5 No.1

Over the past few years the arthroscope has played a major role in the evaluation and treatment of the chondral and osteochondral lesions of ankle joint. But its tech- nique is very difficult and require considerable expertise with instrument. We reviewed 10 ankles in 10 patients who underwent arthroseopic treatment of the osteochondral lesion of ankle at Seoul National University Hospital from 1986 to 1991. The mean age at the time of surgery was 30 years (re,nge,16 to 49 years). There were eight males and two females, All patients had history of trauma and conservative treat- ment under the diagnosis of ankle sprain. The mean follow-up was 2 years and 9 months (range, 1 year and 2 months to 6 years and 7 months). Preoperative diagnosis were osteochondritis dissecans in 7 ankles, loose osteochondral body in one and degenerative arthritis in two through CT or MRI. Arthroscopic diagnosis were osteo- chondritis dissecans with crater and loose body in 6 ankles, loose osteochondral body with no osteochondral defect in one and posttraumatic degenerative arthritis in three. Six ankles with crater and loose body were treated with arthrosopic abrasion and loose body removal. Dne aknle with loose osteochondral body was treated with loose body removal and 3 ankles with degenerative arthritis were treated with resection of body spur and osteochondral ridge. At last follow up, 8 ankles showed excellent and two showed good result. Postoperatively one patient complained transient dorsal numbness and there were no permanent complications. Arthroscope would play a definite role in the diagnosis and treatment of the osteochondral lesions of ankle.

비전형적 대퇴골과 자발성 골괴사증(증례 보고)

이명철,조현철,김태균,성인호,성상철,Lee, Myung Chul,Jo, Hyun Chul,Kim, Tae Gyun,Seong, In Ho,Seong, Sang Cheol 대한관절경학회 1998 대한관절경학회지 Vol.2 No.2

Spontaneous osteonecrosis of the knee was first described by Ahlbck et al in 1968 as the spontaneous and sudden onset of severe pain, usually on the medial side of the knee joint, in old age(>60 years) with no specific etiologic factors. They differentiate the disease from osteochondritis dissecans, osteoarthritis, fracture, infection, neuropathic joint and secondary osteonecrosis of the knee joint. So far many investigators described this disease but had never observed cases developed in young patient with familial occurrence. The report presented here is a case of spontaneous osteonecrosis of both medial and lateral femoral condyles involving the bilateral knee joint that were treated by arthorscopic loose body removal and multiple drilling.

우리나라의 원양정기선 무역에 있어서 최적복합운송망의 선정에 관한 연구

이명철,하명신,최태영 ( Myung Chul Lee,Myung Shin Ha,Tae Yeong Choi ) 한국해운물류학회(구 한국해운학회) 1996 해운물류연구 Vol.23 No.-

내분비질환에 대한 핵의학 분야의 20세기 회고 및 21세기 전망

이명철,Myung Chul Lee 대한갑상선-내분비외과학회 2001 The Koreran journal of Endocrine Surgery Vol.1 No.1

연구논문 : 지체장애인의 관광활동이 삶의 질에 미치는 영향에 관한 연구

이명철 ( Myung Chul Lee ),강인호 ( In Ho Kang ) 대한관광경영학회 2012 觀光硏究 Vol.27 No.2

본 연구는 지체장애인들을 대상으로 관광활동 만족이 삶의 질 어떠한 영향을 미치며, 삶의 질과 행동의도가 어떠한 영행관계가 있는지를 실증분석함으로써 지체장애인의 삶의 질을 향상시키는 복지관광정책을 추진하는데 필요한 기초자료를 제공하고자 하였다. 연구는 조사대상자의 일반적 특성을 파악하기 위하여 설문지를 이용하여 자료를 수집하였으며, 조사대상자는 대구·경북지역에 거주하는 19세 이상의 남녀 중 관광경험이 있는 지체장애인으로 하였다. 설문조사는 2011년 7월 1일부터 7월 30일까지 전문조사원을 선발하여 각 지역에 소재하고 있는 장애인종합복지관, 장애인단체, 그리고 생활시설에 입소하고 있는 지체장애인을 대상으로 설문지 320부를 배포하여 294부를 분석자료로 이용하였다 실증분석 결과 첫째, 지체장애인의 관광활동 만족은 삶의 질 즉, 지체장애인의 자아존중, 자아성취, 대인관계 간의 구조적인 관계로 규명할 수 있다. 둘째, 지체장애인들의 관광만족과 대인관계를 규명함으로써 지체장애인의 관광활동을 통한 다양하고 다채로운 만족들의 변수가 지체장애인들의 대인관계에 유의한 영향을 미치는 것을 알 수 있었다. The purpose of this study is to obtain the basic data necessary to propel the tourism policy to enhance the quality of life of physically disabled persons by providing a plan to develop a tourism activity program tailored for them by analyzing the relationship among satisfaction of tourism activities quality of life and behavioral intentions of the physically disabled. For this purpose, the project was established as follows. First, the relationship among satisfaction of tourism activities, the quality of life and behavioral intention of the physically disabled persons who are doing the tourism activities, The population of this research is the physically disabled persons age 19 or older living in Daegu/Kyungbuk province and having tourism experience, The questionnaires were collected between July 1st , to July 30th, 2011. A total of 320 questionnaires distributed were collected, but 26 were rejected and 294 used. The result of the study shows the satisfaction of tourism activities of the disabled has a meaningful influence on self-respect among types of quality of life and the self-respect is very important to the return tourism activity intention and positive recommendation to neighboring people. Therefore, this study is judged to make the suggestion of the importance of social welfare and tourism industry` to developing the tourism activity programs for the disabled who have no problem with movability and activity and have no different understanding from general people.

다수의 SNS를 이용한 키워드 트렌드 분석 시스템

이명철 ( Myung-chul Lee ),한수현 ( Soo-hyun Han ),이재성 ( Jae Sung Lee ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.2

기업이나 정부 등의 정책 결정에 활용하기 위해, SNS에서 사용하는 키워드를 추출하여 소비자나 유권자의 관심과 선호도를 분석하는 방법이 많이 사용되고 있다. 본 논문에서는 다수의 SNS 사이트에 올린 글과 그에 대한 공감(좋아요) 댓글, 해시태그를 분석하여 관심 키워드의 트렌드를 분석할 수 있는 시스템을 제안한다. 이 시스템에서는 각각의 SNS 글을 형태소 분석하여 키워드 빈도를 측정하고 그에 대한 공감 및 해시태그의 갯수를 계산하여 일정기간 동안의 변화를 그래프로 표시하였다. 이를 통해, 여러 사이트에서의 키워드 트렌드를 한눈에 확인할 수 있도록 했다.

IEC 61508 기준 PES 기반 전자연동장치의 기능 안전도 분석에 관한 연구

이명철(Myung-Chul Lee) 대한전기학회 2014 전기학회논문지 Vol.63 No.11

The Electronic Interlocking unit in railway signalling system is safety-related facilities to determine route and speed for train running. In particular, the SSI(Solid State Interlocking) is Electronic Interlocking unit for high-speed railway, and it performs safety-critical function by MPM(Micro-Processor Module). Meanwhile, MPM is composed of the PES(Programmable Electronic System)-based system, and the PES-based system in railway safety-related facilities should be implemented by complying with the safety requirements defined in IEC 62425 and IEC 61508. In this paper, we performed modeling of failure rate and reliability for MPM implemented by fault tolerance methods and analyzed functional safety for MPM. Moreover, we determined SIL(Safety Integrity Level) for MPM according to the safety requirements defined in IEC 61508 based on an analyzed functional safety.

골절부위에 생긴 혈종의 골막하 이식이 골형성에 미치는 영향에 관한 실험적 연구 - 골스캔 소견을 중심으로 -

이명철(Myung Chul Lee),양승오(Seoung Oh Yang),강흥식(Hung Sik Kang),장기현(Kee Hyun Chang),구경회(Kyung Hoi Koo),성상철(Sang Chul Seung),박인애(In Ae Park) 대한핵의학회 1990 핵의학 분자영상 Vol.24 No.1

N/A It has been reported that hematoma is one of the most crucial factors in fracture healing since callus formation is disturbed by washing out the hematoma near a fracture site. However, it is not clear why the hamatoma is important and how it plays a role during the fracture healing. In order to investigate the role of hematoma in the process of fracture healing, the osteogenic potential by subperiosteal transplantation have been studied. Experimental fractures by operation were made at the mid-shaft of the tibia in New Zealand white rabbits. Removal of hematoma at the fracture site was done after 2 and 3 days from experimental fracture, and the removed hematoma was transplanted into the subperiosteal area at the mid-shaft of the ulna of each rabbit. As control gorups, we have performed 3 different procedures 1) the hematoma was transplanted into the muscular layers at the thigh and forearm; 2) autologous blood clots were transplanted into the subperiosteal area of the ulna; and 3) sham operation without a transplantation into the subperiosteal area. After transplantation, seria bone scintigraphy and simple radiography were performed at 4 days, 1 week, and 2 weeks to detect an abnormality. The results of bone scintigraphy were positive in 5 of 6 experimental group. However, a11 in three control groups were negative. Histological observation of the positive bone revealed new bone formation with trabeculation. These results suggest the hematoma in fracture site has osteogenic potential in the subperiosteal area which can be demonstrable by bone scintigraphy and histologic findings. Therefore, it is considered that hematoma of the fracture site plays an important role in the process of fracture healing. Further biochemical investigation using various experimentaI models is mandatory to apply this preliminary result to the treatment of clinical delayed union or nonunion.

세팍타크로 선수의 16주간 트레이닝이 경기 중 운동강도와 건강 및 운동기능관련 체력에 미치는 영향

이명철(Myung-chul Lee),안나영(Na-young Ahn),장인현(In-hyun Chang) 한국코칭능력개발원 2009 코칭능력개발지 Vol.11 No.3

게이트 Tc-99m-MIBI SPECT 와 Cedars 소프트웨어를 이용한 심근 기능 측정의 재현성

이명철(Myung Chul Lee),정준기(June Key Chung),이동수(Dong Soo Lee),안지영(Ji Young Ahn),천기정(Gi Jeong Cheon) 대한핵의학회 1998 핵의학 분자영상 Vol.32 No.5

N/A Purpose: We investigated reproducibility of the quantification of left ventricular volume and ejection fraction, and grading of myocardial wall motion and systolic thickening when we used gated myocardial SPECT and Cedars quantification software. Materials and Nethods: We performed gated myocardial SPECT in 33 consecutive patients twice in the same position after Tc-99m-MIBI SPECT. We used 16 frames per cycle for the gatingof sequential Tc-99m-MTBI SPECT. After reconstruction, we used Cedars quantitative gated SPECT and calculated ventricular volume and ejection fraction (EF), Wall motion was graded using 5 point score. Wall thickening was graded using 4 point score. Coefficient of variation for re-examination of volume and fraction were calculated. Kappa values (k-value) for assessing reproducibility of wall motion or wall thickening were calculated. Results: Enddiastolic volumes (EDV) ranged from 58 mi to 248 ml (122 ml +/- 42 ml), endsystolic volumes (ESV) from 20 mi to 174 mi (65 ml +1- 39 ml), and EF from 20% to 68% (51% +/- 14%). Geometric mean of standard deviations of 33 patients was 5.0 ml for EDV, 3.9 ml for ESV and 1.9% for EF. Their average differences were not different from zero (p>0.05). k-value for wall motion using 2 consecutive images was 0.76 (confidence interval: 0.71-0.81). k-value was 0.87 (confidence interval:0.83-0.90) for assessment of wall thickening. Conclusion: We concluded that quantification of functional indices, assessment of wall motion and wall thickening using gated Tc-99m-MIBI SPECT was reproducible and we could use this method for the evaluation of short-acting drug effect.