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      • PET 기술의 현재와 미래의 프로젝트 : Current and Future Project

        이경성 제주한라대학 1995 論文集 Vol.19 No.-

        This study is to review the current technology and clinical applications of PET (Positron Emission Tomography) , and to propose it's applicable areas in future and the preparation for it's the advance. PET scanning is a specific method to quantify the functions of all parts in body and the biochemical and physiological responses. PET can provide the informations about basic physiological mechanism and to identify possible makers of disease. And there are many future application, including measurement of biological parameters and the therapeutic monitoring of drugs. Many studies have been carried out to date in numerous centers throughout the world including a number of neurological and psychiatric disorders. Such studies with PET are the beginning of a tremendous expansion in basic science and clinical applications for the human physiological processes. There is no technique currently available that has the sensitivity or potential specificity of chemical mechanism in vivo in various organ as the brain, heart, lung, and elsewhere in the body. But PET scanning will yield rapid advances in new ligand development, providing an understanding of both physiological and pathophysiological prosesses within the next few years that could never be studied by any other method. The studies of second messenger systems in the brain probably will be the next frontier in brain imaging. The use of biological markers with the new genetic markers of neuropsychiatric illness provides a potential for improving our understanding of the etiology, possible diagnosis, and optimal treatment of these diseases. The demonstration of changes in disease such as cancer and the examination of function in common diseases, such as cardiopulmonary diseases, are also likely future areas of PET studies. This together with great improvements in anatomical imaging and the coordination and correlation of these features with PET scanning, promises to be one of the most exciting areas in radiological imaging development. In Korea, only two hospitals have PET facilities today. It need the professional and specific technic and staffs in various areas to the proper use of PET. These staffs include internal medicine and surgeon as the specialists of the organ in body, pharmacologist and chemistrist to synthesize the radiopharmaceutics, medical engineer and physist, and nuclear medical doctor and technologist, and nurse to perform the study in practice. The close cooperation of these areas is necessary to be accomplished accurately and smoothly PET scanning. Therefore, it need the exploitation of manpower and the investment in staff and facility to expand the study and clinical application of PET and to develop it's new technic.

      • 신기능 평가를 위한 동적 신장신티그램의 기술학적 검토

        이경성 제주한라대학 1999 論文集 Vol.23 No.-

        This study reviews the technical aspect to take the accurate renal scintigram. Such effort may provide the base to make the standadized procedure of renal scintigram. The renal scintigram is the method to image the renal function unlike X-ray test, ultra-sonogram, CT, MRI. The advantage of renal scintigram is to detect early the pathologic lesion because the abnormal renal functions appear earlier than renal morphological changes. The renal scintigram is used to test selectively each part of kidney, and to analyze the image quantitatively. The other advantages of renal scitigram are that the procedure of test is easy, non-invasive and has little side effect. and that the repeat test allows to observe the progress of disease and the effect of treatment. For last decades many methods of renal function evaluation were developed to measure accurately and simply in nuclear medicine The improvement of radiopharmaceuticals and computer program techniques make to be able to provide more information about the renal function. But according to the purpose of test, we must select the factors including radioactive drugs, pre-procedure treatment for patient, patient position, data collection, scintigram and data analysis to evaluate renal function by renal scintigram. The selection of each factors make different results. So the role of technologist is very important.

      • MRI 시스템과 MRI 기술의 장래 전망 : Now and Future

        이경성 제주한라대학 1992 論文集 Vol.16 No.-

        Magnetic Resonance Imaging (MRI) is the image techique which is attained by connecting the NMR phenomena with the computer applied techniques, is called the most innovative development in the image medical area. MRI invites more interests than others because it is able to look the inside of human body noninvasively by using NMR phenomena and to have many clinical applied areas by obtaining the image of the physical charateristics of the composites of human body. This article is to disccuss the principles, the image techniques and the equipments of MRI system at technical aspect, and to propose the prospects of MRI technique. Examining the technical aspect of the rapidely improving MR medicine may provide a tool of judgements about selection, application, clinical values of MR equipments, And it may rise the efficiency of MRI and expand the role of it.

      • PACS의 역할과 전망

        이경성 제주한라대학 2000 論文集 Vol.24 No.-

        PACS(Picture Archiving and Communications System) is a core technology for the future hospitals. Today, a number of hospitals are implementing hospital-wide PACS. PACS as diagnostic network system has following advantages : Saving space(film replacement), saving time(human resource reduction), saving cost(profit mprovement). But to actualize for PACS’ advantages needs to synthesize the technologies that include the image displaying and processing, the data communicating and networking, the database establishing, the information managing, the user interfacing, and the data storing. To establish the reliable and fault-tolerant PACS needs the total systems approach grounded on full understanding the task of radiological department and the hospital environment. The followings will be key players to expend PACS : Memory cost reduction of recording media like DVD, approval of reimbursement by MIIW, low cost DICOM viewer, high speed public line, public server(Web) in medical society by national project.

      • KCI등재

        여성 얼굴의 매력 평가에 영향을 미치는 남성의 개인차 요인들

        이경성,한덕웅,이웅진 한국사회및성격심리학회 2004 한국심리학회지 사회 및 성격 Vol.18 No.2

        남성이 여성의 얼굴 모습을 보고 매력을 느끼는데 영향을 미치는 요인들에 관해서 다음 가설들을 검증하였다. 먼저 선행연구에서 남자 대학생들이 여성의 얼굴에서 매력을 느끼는데 큰 영향을 미치는 남성성-여성성, 이지성-맹함의 두 차원들을 알아낸 결과가 30대에서도 일관되게 나타나는지 알아보았다. 다음으로 여성의 얼굴에서 남성이 매력을 느끼는데 영향을 미치는 성격 및 태도 요인들 가운데 남성성, 전통적 성역할에 대한 신념, 지배성, 외향성, 그리고 의존성이 여성 얼굴의 남성성-여성성, 이지성-맹함의 두 차원들의 효과를 조절하는지 알아보았다. 30대 남성 129명을 대상으로 수행된 본 연구의 중요한 결과를 요약하면 다음과 같다: ⑴ 남성들은 여성스러운 얼굴 모습의 여성에 대해서는 그 여성이 맹해 보이든지 이지적으로 보이든지 상관없이 매력적이라고 평가하였지만, 이와 달리 남성스러운 얼굴 모습의 여성에 대해서는 이지적으로 보일 때보다 맹해 보이면 덜 매력적이라고 평가하였다. ⑵ 남성성이나 전통적 성역할 신념이 높은 남성, 혹은 의존성이 낮은 남성들은 각각 남성성이나 전통적 성역할신념이 낮은 남성, 혹은 의존성이 높은 남성들보다 남성스러운 얼굴 모습의 여성을 더 매력적이지 않다고 평가하였다. 또한 전통적 성역할 신념이 높은 남성과 의존성 수준이 낮은 남성들은 여성스러운 얼굴 모습의 여성을 더 매력적이라고 평가하였다. ⑶ 지배성, 외향성, 및 전통적 성역할 신념이 높은 남성들은 낮은 남성들에 비해서 여성스럽고 맹한 얼굴 모습의 여성을 더 매력적이라고 평가하였다. This study examined the following hypotheses: First, as found in the previous study(Lee & Hahn, 2003) with male college students, both of the 'womanly- manly' and ‘intelligent- dull' facial dimensions would be also important in the attractiveness ratings of women's faces among men in their 30s. Second, sex-role beliefs, masculinity, dominance, extroversion, and dependency of men would moderate these effects. The main findings of this study were as follows : (1) Men rated womanly faces as more attractive than manly faces, and men rated manly and dull faces as less attractive than the faces in the other conditions; (2) Manly female faces were rated as less attractive by men who were high in masculinity, high in traditional sex-role, or low in dependency. And womanly female faces were rated as more attractive by men who were high in traditional sex-role or low in dependency; (3) Women with the womanly and dull faces were rated as more attractive by men who were high in dominance, extroversion, or traditional sex-role. The implications of this study and suggestions for future study were discussed.

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