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放射線計測用 熱루미네센스 線量計의 TL感應에 관한 實驗的 硏究(Ⅰ)
李秀容 漢陽大學校 基礎科學硏究所 1990 基礎科學論文集 Vol.9 No.-
최근 熱 루미네센스線量計(TLDs)는 環境科學, 醫學 原子力産業 및 많은 分野에서 널리 사용되고 있으며, 또 이들 線量計를 사용한 모니터링은 放射線에 의한 被暴線量 評價에 유용하게 적용될 수 있으므로 作業保健物理면에서 그 개발의 필요성이 증대되고 있다. 이러한 면에서, 본 硏究에서는 TLD에 관련된 主要槪念을 설명한 후 X- 및 r-線과 같은 光子放射線의 에너지 변화에 따른 熱루미네센스(TL) 感應特性의 調査를 이 硏究의 目的을 위해 試圖된 “重複照射方法”을 도입하여 실행하였다. 이를 위해 사용된 線量計로는 테포른 素子를 30% 함유한 TLD(D-LiF-7, D-CaSO₄:Dy 및 D-LiF-6을 택하여 光子放射線에 대한 超線型性과 熱中性子에 대하 線型性을 調査하여 比較分析하였다. X線에 대해서 필터法에 의해 有效에너지를 決定하므로써 照射線量의 信賴度를 높였고, 熱루미네센스線量計의 加熱處理特性과 安定性에 관해서도 함께 논의하였다. Recently, thermoluminescent dosimeters(TLDs) have been widely. used in the environmental science, medicine, nuclear power industry, and in many other fields. And also the monitoring using these dosimeters should be usefully applied to the evaluation of the exposed dose, therefore the need for improved dosimetry in operational health physics has, in the past few years, led to increased development. In this viewpoint, after an elucidation of the main concepts having relevance to the TLDs, the present study carried out the investigation that the properties of TL response due to the energy variation relating to the photon radiation such as X-and gamma-rays introduced by “the repeadedly irradiation method”intended to this purpose. As the TLDs, D-LiF-7, D-CaSO₄: Dy and D-LiF-6 of Teflon discs containing 30% of phosphors by its weight are selected for use in this study, and then the supralinearity of photon radiation as well as the linearity of thermal neutron were investigated, and then analysed comparatively. Determining the effective energy of X-rays by means of the filter methods, the present study improved the reliability of exposed dose, and then the properties of heating cycles as well as its stability of TLDs were discussed.
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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
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.
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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.
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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.
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이수용,Lee, Soo-Yong 대한방사선방어학회 1995 방사선방어학회지 Vol.20 No.3
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.
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공학계열 초기경력자의 학습과 적응을 위한 조직사회화과정 연구
이수용 한국공학교육학회 2014 공학교육연구 Vol.17 No.5
The purpose of this study was to examine the organization socialization process of engineering novice for the learning and adaptation. Qualitative case study was performed with 5 participants and the collected qualitative data were analyzed using funnel-like method. The findings showed that the organization socialization process proceeds in three steps–anticipatory, encounter, and metarmorphosis. Engineering Novice look at the whole organization socialization proces of organization culture and job maladjustment, and the relationshipbetween internal and external organizations to overcome the difficulties arising from the community through the process of becominga full participant. Socialization of engineering novice is ultimately the organization to respond to new situations and changes in thelearning process takes place in the process, talking about a major resource for human resources. This enables organizations to socializeand harmonious human relationships within the organization so that it can be more important than anything else.
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