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      • 골 및 연부 조직 종양에서의 미세 침 흡입 세포 검사

        이수용,전대근,이종석,김석준,조경자,오형호,박민효,박현수,장진대,Lee, Soo-Yong,Jeon, Dae-Geun,Lee, Jong-Seok,Kim, Sug-Jun,Cho, Kyung-Ja,Oh, Hyung-Ho,Park, Min-Hyo,Park, Hyun-Soo,Jang, Jin-Dae 대한근골격종양학회 1996 대한골관절종양학회지 Vol.2 No.1

        From January 1994 to August 1995 we performed 270 cases of fine needle aspiration cytology for bone and soft tissue lesions. Among them 137 cases were diagnosed histologically. Sixty-seven cases were benign and 70 cases were malignant. We analysed these on the aspect of sensitivity, specifity, positive predictive value, negative predictive value of the cytologic examination. Malignant cases consisted of bone tumor 29 cases; soft tissue tumor 25 cases; and metastatic tumor 16 cases. The sensitivity and specifity of the aspiration cytology for malignant tumor were 67.8% and 97%, respectively. The positive and negative predictive value of aspiration cytology were 97.4% and 72.7%, respectively. Among them 40 cases were primary bony lesions; 14 benign lesions, 26 malignamt bone tumors. Sensitivity of aspiration cytology for these primary bony lesion was 90%(18/20) and its specifity was 100%(13/13). Three cases showed atypical cells in cytology but with biopsy we could find them as one benign and two malignancies. Two cases of manignancy showed negative result in cytology; one was parosteal sarcoma of proximal femur and the other was osteosarcoma of proximal tibia which was biopsied already at other hospital. Although the overall sensitivity and specifity for malignant bone and soft tissue tumors were relatively low and not so predictable, the fine needle aspiration cytology for primary bony lesion was useful in the differential diagnosis of benign or malignancy.

      • 전이성골암에 의한 통증에 대한 Salmon Calcitonin($Miacalcic^{(R)}$) 비강분무의 효능 및 안정성

        이수용,전대근,이종석,김석준,홍석일,최수용,장진대,Lee, Soo-Yong,Jeon, Dae-Geun,Lee, Jong-Seok,Kim, Sug-Jun,Hong, Seok-Il,Choi, Soo-Yong,Jang, Jin-Dae 대한근골격종양학회 1996 대한골관절종양학회지 Vol.2 No.1

        Metastaic bone tumors are usually accompanied with severe pain. The treatment modalities for this pain are so variable that patients are sometimes afraid of using them. Salmon calcitonin has a function to increase beta-endorphines followed by increasing the blood level of prostaglandin and thromboxan A2, which results in analgesic effect. This drug also has been known to decrease bone resorption. There were a few reports that parenteral use of salmon calcitonin decrease the pain from metastatic bone tumor. We wanted to know the effectiveness and tolerability of nasal spray of salmon calcitonin in relieving bone pain with metastatic tumor. We analyzed the effectiveness in the aspects of pain, sleep, performance status, mobility, supplementary analgesic use. The biologic effect of salmon calcitonin was analysed with CBC, Ca/P, BUN/Cr, uric acid. Simple radiography, alkaline phosphatase, osteocalcin, pyrilink-K were used as parameters for bone change. Eighteen cases of metastatic bone tumors took nasal spray of salmon calcitonin($Miacalcic^{(R)}$, 200IU/day) for 4 weeks, to relieve bone pain. With Wilcoxon Matched-Pairs Signed Ranks Test, we could find pain decreased significantly at 3 week and mobility become improved at 4 week of salmon calcitonin use. Other parameters didn't show any significant changes. We think the analgesic effect is mainly due to effect not on the local bone lesion but on the central nervous system, and that increased dose of salmon calcitonin can induce earlier and stronger analgesic effect.

      • 원통형 굽힘을 받는 적층판의 임계좌굴 하중

        이수용,Lee, Soo-Yong 항공우주시스템공학회 2007 항공우주시스템공학회지 Vol.1 No.4

        This paper presents critical buckling loads of laminated composites under cylindrical bending. In-plane displacements are assumed to vary exponentially through plate thickness. The accuracy of this theory is examined for symmetric/antisymmetric cross-ply, angle-ply and unsymmetric laminates under cylindrical bending. Analytical solutions are provided to investigate the effect of transverse shear deformation on critical buckling loads of the laminated plates, and the results are compared with those obtained from the first-order shear deformation plate theory and the classical laminated plate theory.

      • 융기성 피부섬유육종의 치료 및 예후

        이수용,박종훈,전대근,이종석,김석준,Lee, Soo-Yong,Park, Jong-Hoon,Jeon, Dae-Geun,Lee, Jong-Seok,Kim, Sug-Jun 대한근골격종양학회 2000 대한골관절종양학회지 Vol.6 No.1

        목적 : 융기성 피부섬유육종은 피부에 생기는 드문 종양으로서 부적절한 절제가 잦은 재발과 예후에 영향을 미치는 것으로 보고되고 있다. 저자들이 경험한 환자를 대상으로 치료와 예후의 관계를 연구하여 적절한 치료법을 제시하고자 하였다. 대상 및 방법 : 1990년 3월부터 본원 정형외과에서 치료한 융기성 피부섬유육종 환자중 추시 기간이 최소 12개월 이상인 14례를 대상으로 치료 방법 및 최종 추시까지의 상태를 점검하였다. 전례 모두 병리학적 진단하에 치료되었으며, 재발 후 전원된 9례를 포함한 13례에서 광범위 절제술이 시행되었다. 1례는 서혜부의 신경, 혈관이 종양과 인접하여 종양내 전절제술을 시행하였고 술후 항암요법을 추가한 경우였다. 결과 : 재발후 전원되었던 9례의 평균 재발 회수는 1.3 (1~2)회였으며, 처음 수술 후 첫번째 재발까지의 기간은 평균 11.8(2~24)개월이었다. 술후 최종 추시까지(평균 추시기간 50.8개월)에서 광범위절제술로 치료한 13례에서는 재발을 볼 수 없었으나, 병소내 전절제술과 항암제치료를 하였던 예에서는 반복된 재발을 보였고, 결국 폐전이로 사망하였다. 결론 : 융기성 피부섬유육종은 반드시 생검을 통한 확진 후 초기에 광범위 절제연 이상으로 절제를 시행하여야 할 것으로 사료된다. 재발은 최소한 2년까지의 추시가 있어야 그 여부를 알 수 있을 것으로 사료된다. Purpose : Dermatofibrosarcoma protuberans(DFSP) is a rare tumor of the skin with a strong tendency of infiltration to surrounding tissues. Inadequate surgical intervention brings about frequent recurrence and poor prognosis. We attempted to find a guideline for adequate treatment for DFSP. Materials and Methods : Fourteen cases who had been treated in our department since Mar. 1993 and followed up for more than 12 months postoperatively were reviewed. Including nine cases who were transferred from other hospital after recurrence, thirteen cases underwent wide resection. One case was treated by intralesional resection followed by chemotherapy (CYVADIC) due to neurovascular abutment to the mass in the inguinal area. Results : The nine cases who were transferred due to recurrences experienced recurrence in average 1.3(1-2) times and the average period until first local recurrence from primary operation was 11.8(2-24) months. The thirteen cases with wide surgical margin showed no recurrence at the final follow up. One case treated by intralesional resection and chemotherapy showed multiple recurrence and died of the disease due to lung metastasis. Conclusions : From these data, we could find that primary wide resection can be the way of reducing recurrence and metastasis, and the follow up period for the detection of recurrence should be at least two years.

      • KCI등재

        비이온화방사선에 대한 제반 개념 양, 단위 및 용어

        이수용,Lee, Soo-Yong 대한방사선방어학회 1995 방사선방어학회지 Vol.20 No.3

        비이온화방사선(NIR)에 대한 방어는 증가되는 관심의 주제가 되고 있지만, 방사선의 유형이나 그 적용간의 의존되는 아주 다른 개념의 사용은 이 분야에서의 통일된 방법의 자료편집에 어려움을 주고 있다. 이 논문의 주된 목적은 비 이온화방사선 방어의 목적으로 확실하게 사용하는 개념, 양, 단위 및 전문용어를 제공하기 위해서이다. 그 외에 방사선방어의 표준과 피폭한도를 양으로 나타내는데 사용되는 특별한 개념과 주어진 양들의 체계적인 분류와 비교를 요약하고 또 논하였다. Protection against non-ionizing radiation(NIR) is the subject of an increasing interest but the use of very different concepts depending on the type of radiation or application, makes it rather difficult to compile studies and the data obtained in an uniformity in this field. The main object of the present paper is to summarizes and provide an inventory of concepts, quantities, units and terminology currently used for purposes of NIR protection. Furthermore a systematic classification and comparison of these quantities is given, and in particular the concepts used to quantify exposure limitation and radiation protection standards are summarized and discussed.

      • KCI등재

        300 keV 중성자(中性子)에 대한 방사선량(放射線量) 관계량(關係量)의 산정(算定)

        이수용,Lee, Soo-Yong 대한방사선방어학회 1986 방사선방어학회지 Vol.11 No.1

        ICRU 구(球)를 피사체(被射體)로 하여 300 keV 중성자(中性子)의 방사선량(放射線量) 관계량(關係量)을 평가(評價)하였다. 피사체내(被射體內)의 선량당량(線量當量) 분포(分布)를 직접(直接) 산정(算定)하기 위해 중성자(中性子)-광자(光子)-하전입자(荷電粒子) 결합수송(結合輸送)을 다룰 수 있는 몬테칼로 코드 NEDEP을 사용하였다. 계산결과(計算結果) 얻은 방사선량(放射線量) 관계량(關係量)은 다음과 같다. 심부선량당량지수(深部線量當量指數) $H_{I,d}:1.78{\times}10^{11}\;Sv-cm^2$ 표층선량당량지수(表層線量當量指數) $H_{I,s}:2.08{\times}10^{-1}\;Sv-cm^2$ 주위선량당량(周圍線量當量) $H^*(0.07):1.70{\times}10^{-11}\;Sv-cm^2$ 주위선량당량(周圍線量當量) $H^*(10):1.78{\times}10^{-11}\;Sv-cm^2$ 실효선질계수(實效線質係數) $\bar{Q}^*(10):12.4$ Dosimetric quantities for 300 keV neutrons in the ICRU standard tissue sphere were evaluated. The Monte Carlo code NEDEP which performs neutron-photon-charged particles coupled transport was used in the direct estimation of absorbed dose and dose equivalent. Some important quantities calculated are as follows; Deep dose equivalent index $H_{I,d}:1.78{\times}10^{11}\;Sv-cm^2$ Shallow dose equivalent index $H_{I,s}:2.08{\times}10^{-11}\;Sv-cm^2$ Ambient dose equivalent $H^*(0.07):1.7{\times}10^{-11}\;Sv-cm^2$ Ambient dose equivalent $H^*(10):1.78{\times}10^{-11}\;Sv-cm^2$ Effective quality factor $\bar{Q}^*(10):12.4$

      • KCI등재

        예수의 집단상담 기법 연구

        이수용(Lee, soo-yong),조삼복(Cho, som-bok) 한국기독교상담심리학회 2005 한국기독교상담학회지 Vol.10 No.-

        '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 9시까지 원문보기가 가능합니다.

        This study examined the Group Counseling Techniques of Jesus. First, I described Jesus as a counselor, the concept of the Group Counseling, the Group Counseling in the Old Testament, and the Group Counseling in the New Testament. Then I closely inspected the Group Counseling Techniques used by Jesus in the New Testament. I eliminated the 8cases that are a type of the Group Counseling in the New Testament. Then, I analyzed Jesus interviews from the point of view of counseling techniques. I found that Jesus usually used the counseling techniques of attending behavior, active listening, clarification, self-disclosure, empathy and confrontation. Jesus solved many people s difficulties through these techniques. Sometimes Jesus trained his disciples With small groups. In the Group Counseling he focused on here and now and also used modeling Jesus discharged all his duties very well. Through this study We found the core techniques of Jesus counseling to be attending behavior, active listening, clarification, self-disclosure, empathy and confrontation. Therefore we have to endeavor to practice these counseling techniques as an expert. Church is a kind of a group. If we can use the Group Counseling Techniques of Jesus well, it ll be helpful to the church. It is meaningful that this study examined the Group Counseling Techniques of Jesus.

      • KCI등재

        원위 경골에서 발생한 원발성 악성 골종양에서 사지 구제술과 절단술의 비교

        이수용(Soo-Yong Lee),전대근(Dae-Geun Jeon),박종훈(Jong-Hoon Park),송원석(Won Seok Song),고한상(Han Sang Koh),조완형(Wan-Hyung Cho) 대한정형외과학회 2007 대한정형외과학회지 Vol.42 No.6

        목적: 원위 경골에 발생한 원발성 악성 골종양의 장기 생존율과 사지 구제술의 적응증을 알아보고 저온 열처리 자가골만 이용하거나 생비골 이식술을 추가하여 사지 구제술을 한 경우 절단술과 비교하여 그 결과를 알아보고자 하였다. 대상 및 방법: 1985년 3월부터 2004년 6월까지 본원에 등록된 13예를 대상으로 하였다. 진단은 골육종 9예, 연골육종 2예, 방골성 골육종 1예, 악성 섬유성 조직구종 1예였다. Enneking에 의한 병기는 IB 1예, IIA 1예, IIB 11예였다. 모두 수술을 하였고 10예에서 항암 화학 요법을 추가하였다. 6예에서 하퇴 절단술을, 7예에서 사지 구제술을 하였으며 저온열처리 자가골만 사용하거나(5예), 생비골 이식술을 추가하거나(1예), 생비골 이식술만 시행(l예)하였다. 결과: 최종 추시 상 모든 예에서 재발이나 전이가 없었다. 사지 구제술을 시행한 군과 절단술을 시행한 군의 하지 기능 점수는 각각 85%, 82%였다. 열처리 자가골 만으로 재건한 5예 중 2예는 수술 후 6, 9개월에 골유합을 이루었다. 나머지 3예는 불유합 및 이식골 골절이 발생하여 생비골 이식술(2예) 및 해면장골 이식술(1예)을 추가로 시행하였다. 처음부터 생비골 이식술을 한 2예는 골유합이 진행중이다. 결론: 예후는 양호하였으며 신경 및 혈관의 침범과 광범위한 연부조직 절제가 절단술의 적응증이 되었다. 사지 구제술을 시행한 군과 절단술을 시행한 군의 기능적 차이는 없었다. 열처리한 자가골을 이용한 재건 술식이 생역학적이고 경제적이나 초기에 생비골 이식술을 조합하는 것이 이상적인 치료법의 하나로 생각된다. Purpose: The long term survival and indications of limb salvage surgery for primary malignant bone tumors of the distal tibia were evaluated, and the results of the reconstruction method using a pasteurized autograft alone or a pasteurized autograft and living fibular bone graft composite were examined. Materials and Methods: From March 1985 to June 2004, 13 cases were considered eligible. The diagnosis included 9 osteosarcomas, 2 chondrosarcomas, 1 parosteal osteosarcoma, and 1 malignant fibrous histiocytoma of the bone. There was 1 case of stage IB, 1 IIA, and 11 IIB according to the Enneking classification. Each case underwent surgery and 10 cases underwent additional chemotherapy. Six cases underwent a below-knee amputation and 7 cases had limb salvage surgery. The reconstruction methods were pasteurized bone alone (5), an additional living fibula bone graft (1) or a living fibula bone graft alone (1). Results: There was no recurrence or metastasis at the final follow up. The MSTS functional score of the limb salvage group and amputation group were 85% and 82% respectively. Two out of 5 cases of reconstruction with pasteurized bone alone achieved bony union at 6 and 9 months after surgery. The remaining 3 cases showed nonunion and fractures of the pasteurized bone that was followed by an additional living fibula graft (2 cases) and cancellous iliac bone graft (1 case). Two cases of primary living fibula grafts are in the course of healing. Conclusion: The prognosis was good. Neurovascular invasion by the tumor and the necessity of a radical soft tissue excision indicated an amputation. There was no difference in the functional outcome between the limb salvage group and amputation group. A reconstruction method using. pasteurized bone has bio-mechanical and economical benefits. However, primary additional living fibular bone graft is a promising method.

      • KCI등재

        로켓 연소기의 동압 진폭엔벨롭을 이용한 안정성 해석

        이수용(Soo Yong Lee) 한국추진공학회 2021 한국추진공학회지 Vol.25 No.1

        얼마나 쉽게 연소불안정 해지는지에 대한 척도로서, 작동 안정성 여유를 예측하기 위해 로켓연소기시스템의 열음향 불안정을 검토하였다. 연소기 시스템의 동적거동 특성파악을 위해 연소성능시험 중 측정한 연소기의 동압 데이터를 바탕으로 시간이 지남에 따라 시스템이 안정해지는지를 결정하는 파라미터로서 성장속도 계수를 구하였다. 파라미터 추출은 시계열 압력데이터를 주파수 도메인으로 전환하여 관심모드의 성장속도나 감쇠계수를 도출하는 방법을 우선 검토하였으며, 스토캐스틱 해석의 경우에는 압력진동의 진폭 엔벨롭으로부터 압력진폭 PDF를 추출했다. As a measure of susceptibility on the combustion instability, thermo-acoustic instabilities in rocket combustion system was considered for the estimation of the operational stability margin. Growth rate, which governs the asymptotic stability behavior of the system, was determined from the dynamic data measured during combustion tests in order to understand the dynamic characteristics of combustor system. Frequency transform technique was first applied to determine the system parameters such as growth rate and/or damping coefficient for an interested mode from the time series pressure data, and the PDFs of pressure amplitude were extracted from the amplitude envelope of pressure oscillation for the stochastic analysis.

      • 복합형 진공펌프의 성능에 관한 실험적 연구

        이수용(Soo-Yong Lee),권명근(Myoung-Keun Kwon),황영규(Young-Kyu Hwang) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5

        Recently, high vacuum pumps are widely used in the semi-conduction and liquid-crystal display(LCD) process. In this study, pumping performance of two type vacuum pumps compared compound drag pump (CDP) with compound molecular pump (CMP). Two pumps are considered: CDP is combined a helical-type and disk-type drag pump, and CMP is combined a turbo molecular pump (TMP) and disk-type drag pump. We measured the ultimate pressure, pumping speed and compression ratio in the outlet pressure range from 0.4 to 533 ㎩ for vacuum pumps.

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