• Title/Summary/Keyword: medical technology

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Possibility of Using DNA Chip Technology for Diagnosis of Human Papillomavirus

  • Liu, Cui-Hua;Ma, Wen-Li;Shi, Rong;Ou, Yang-Qian;Zhang, Bao;Zheng, Wen-Ling
    • BMB Reports
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    • v.36 no.4
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    • pp.349-353
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    • 2003
  • To explore the application of DNA chip technology for the detection and typing of Human Papillomavirus (HPV), the HPV6, 11, 16 and 18 gene fragments were isolated and printed onto aminosilane-coated glass slides by a PixSys 5500 microarrayer as probes to prepare the HPV gene chips. HPV samples, after being labeled with fluorescent dye by restriction display PCR (RD-PCR) technology, were hybridized with the microarray, which was followed by scanning and analysis. The experimental condition for preparing the HPV gene chips was investigated, and the possibility of HPV genotyping using gene chips was discussed. The technique that was established in this study for preparing HPV gene chips is practical. The results of the present study demonstrated the versatility and inspiring prospect of using this technology to detect and genotype HPV.

Dissemination of Borrelia burgdorferi and immunological responses after experimental infection in rabbits (실험적으로 감염시킨 토끼에서 Borrelia burgdorferi 분포 및 면역반응 양상)

  • Kim, Jong-bae;Park, Sung-un;Song, Hye-wone;Park, Sang-wook;Kim, Young-mi
    • Korean Journal of Veterinary Research
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    • v.39 no.1
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    • pp.204-212
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    • 1999
  • The visceral dissemination of Borrelia burgdorferi in New Zealand White rabbits was evaluated following intradermal inoculation of $1{\times}10^8$ spirochetes. We inoculated Borrelia burgdorferi B31, B garinii KW1 and B afzehlii S13, respectively, and monitored the dissemination in the experimentally infected rabbits for 28 days. In the B burgdorferi B31-challenged group, the spirochetes were completely cleared in rabbits at day 1 and visceral dissemination was not demonstrated. However, B garinii KW1 and B afzelii S13 were found to successfully disseminate in visceral organs of rabbits during the experiment period of 28 days. And experimentally infection-derived immunological responses in rabbits were identified with enzyme-linked immunosorbent assay and immunoblot analysis. Based on these results, the differences in the virulence of Lyme borrelial strains were proved in rabbit model.

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Study of Efficiency Test Evaluations Method for Imaging Device Based Laser Equipment (영상장치 기반 정밀치료용 레이저 수술기의 성능 평가 방법 개발)

  • Kim, Dae Chang;Lee, Seung Bong;Jeong, Jae Hoon;Kim, Sung Min
    • Journal of Biomedical Engineering Research
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    • v.40 no.6
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    • pp.230-234
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    • 2019
  • Medical laser equipment using optical energy is used to surgery and treat diseases by destroying and removing tissue. Domestic laser equipment has been used steadily in the skin and cosmetics sectors and has been changed to radiate high-power energy in a wide range to shorten patient treatment time. However, side effects such as burns and damage of normal tissues occurred. To solve this problem, techniques for detecting lesions using an imaging device and selectively radiating the laser have been developed. In this study, we proposed an evaluation method to evaluate the safety and performance of target detection accuracy, laser irradiation accuracy and motion protection device technology derived from product analysis and investigation. Finally, the validity of the evaluation method was evaluated by evaluating the imaging device based laser equipment as the proposed evaluation method.

Monocytes Contribute to IFN-β Production via the MyD88-Dependent Pathway and Cytotoxic T-Cell Responses against Mucosal Respiratory Syncytial Virus Infection

  • Tae Hoon Kim;Chae Won Kim;Dong Sun Oh;Hi Eun Jung;Heung Kyu Lee
    • IMMUNE NETWORK
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    • v.21 no.4
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    • pp.27.1-27.12
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    • 2021
  • Respiratory syncytial virus (RSV) is the leading cause of respiratory viral infection in infants and children. However, little is known about the contribution of monocytes to antiviral responses against RSV infection. We identified the IFN-β production of monocytes using IFN-β/YFP reporter mice. The kinetic analysis of IFN-β-producing cells in in vivo RSV-infected lung cells indicated that monocytes are recruited to the inflamed lung during the early phase of infection. These cells produced IFN-β via the myeloid differentiation factor 88-mediated pathway, rather than the TLR7- or mitochondrial antiviral signaling protein-mediated pathway. In addition, monocyte-ablated mice exhibited decreased numbers of IFN-γ-producing and RSV Ag-specific CD8+ T cells. Collectively, these data indicate that monocytes play pivotal roles in cytotoxic T-cell responses and act as type I IFN producers during RSV infection.

International Standards of Electrical Equipments for Medical Practice (의료용 전기기기에 대한 국제표준 현황)

  • Lee, Tae-Bum
    • The Korean Journal of Health Service Management
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    • v.7 no.3
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    • pp.203-212
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    • 2013
  • Medical devices separated by a committee of the International Electrotechnical Commission IEC TC (Technical Committee) 62 medical electrical equipment being promoted by the International standards. Actually, a lot of standards were existed, but many national and international standards for medical devices were lacking in practical standards that can be applied to their development. Most international standards were focused in electrical and mechanical safety of medical devices. Therefore, there were few practical standards which contain essential performance evaluation. Although medical device regulations do not enforce a fixed lifecycle model, activities are presented in a sequential manner, thus hinting at a waterfall process. Meanwhile, for a decade or more, software teams have benefitted from agile development methods. Several medical device manufacturers have adopted agile practices while keeping development in compliance with regulations, but conflicts arise and decisions have to be taken in favor of agility or formality. However, if there are new practical standards of medical devices, it must be possible to promote the medical devices industry in their nation. To do this, there is a need to develop a new standard could apply to the international market through the analysis of the medical device related technology. Consequently, new standards such as NP (New proposal) or NWIP (New Work Item Proposal) should be developed through international standardization of medical device technology.

A study on problem solution method for works improvement and advancement quality of life on Job analysis of Emergency Medical Technicians (응급구조사의 직무분석에 따른 업무개선과 삶의 질 향상을 위한 문제점 해결 방법에 관한 연구)

  • Kim, Jae-Gab;Koh, Jae-Moon;Kim, Kyung-Wan;Jung, Young-Tae
    • The Korean Journal of Emergency Medical Services
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    • v.11 no.1
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    • pp.73-80
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    • 2007
  • This study is a descriptive survey research to know the levels of job satisfaction and influential factors for emergency medical technicians(EMT). This study sampled Level 1 and Level 2 Rescue Members from fire stations and EMT from general hospitals in the Gwangju City and JeollaNamdo area. Interviews for the 75 participants of this convenience sample were conducted for a two month period from July to September 2006. Data was collected on interviewing questionnaires. When looking at the results above internal factions were most influential towards satisfaction and self-responsibility, fulfillment, displays of Aptitude were highest for satisfaction. However, organizational factors were the lowest. There is a need for reform in promotion term periods and policy as well as promotion opportunities. Influential factors for job satisfaction were Role Performance Ability, Intentions for Changing Jobs, and Job Selection Motivation. Therefore, the more insufficient your ability to perform your job the less satisfied you are with it and the more fear you feel from experiences on the job the less satisfied you are with your job. Henceforth, there is a need to reform the educational programs offered to EMT for job training emphasizing job performance ability and the ability to judge for oneself on emergency situations, and reform the promotional system. Finally, there is a need for psychological consultation to offer stability to those after treating an emergency situation and encouragement for personal religion.

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Recommendations for the Successful Design and Implementation of Competency-Based Medical Education in Korea (한국에서 역량바탕의학교육의 성공적인 실행을 위한 제언)

  • Yoon, Bo Young;Choi, Ikseon;Kim, Sejin;Park, Hyojin;Ju, Hyunjung;Rhee, Byoung Doo;Lee, Jong-Tae
    • Korean Medical Education Review
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    • v.17 no.3
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    • pp.110-121
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    • 2015
  • Competency-based medical education (CBME) is an outcome-oriented curriculum model for medical education that organizes learning activities and assessment methods according to defined competencies as the learning outcomes of a given curriculum. CBME emerged to address the accountability of medical education in response to growing concerns about the patient safety in North America in the 1970s, and the number of medical schools adopting CBME has dramatically increased since 1990. In Korea, CBME has been under consideration as an alternative curriculum model to reform medical education since 2006. The purpose of this paper is three-fold: (1) to review the literature on CBME to identify the challenges and benefits reported in North America, (2) to summarize the process and experiences of planning and implementing CBME at Inje University College of Medicine, and finally (3) to provide recommendations for Korean medical schools to be better prepared for the successful adoption of CBME. In conclusion, one of the key factors for successful CBME implementation in Korea is how well an individual school can modify the current curriculum and rearrange the existing resources in a way that will enhance students' competencies while maximizing the strengths of the school's existing curriculum.

Effect of Hospital Selection Factors on Patient Satisfaction and Reuse Intention (병원선택요인이 환자만족도 및 재이용에 미치는 영향)

  • Shim, Gyu-Beom;Kim, Min-Ho;Kim, Weon;Shin, Moon-Ju
    • The Korean Journal of Health Service Management
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    • v.8 no.2
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    • pp.37-48
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    • 2014
  • This study was performed to identify effects of hospital selection factors on patient satisfaction and reuse intention. For this purpose, a survey was performed subject to outpatients and inpatients in 10 hospitals located in Busan district from March 7, 2013 to June 21, 2013 and total 447 copies were used as final study data. As results of this study, it was found that among the hospital selection factors of outpatients, internal conditions and medical service gave effects to patient satisfaction and internal conditions, service of medical staffs and medical service gave effects to reuse intention. It was found also that among the hospital selections factors of inpatients, internal conditions, service of medical staffs and medical service gave effects to patient satisfaction and external conditions, internal conditions, service of medical staffs and medical service gave effects to reuse intention. It was suggested that in the effect of patient satisfaction on reuse intention, both inpatients and outpatients gave the effect and thus higher patient satisfaction was related to higher reuse intention. Therefore, instead of hospital-centered medical treatments, hospitals should restructure its medical and service systems that are patient-centered. Also, it is necessary for the hospital managers to recognize that patient satisfaction is an important factor in increasing its profit.

The Principle and Trends of CRISPR/Cas Diagnosis (CRISPR/Cas 진단의 원리와 현황)

  • Park, Jeewoong;Kang, Bong Keun;Shin, Hwa Hui;Shin, Jun Geun
    • Journal of Biomedical Engineering Research
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    • v.42 no.3
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    • pp.125-142
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    • 2021
  • The POCT (point-of-care test) sensing that has been a fast-developing field is expected to be a next generation technology in health care. The POCT sensors for the detection of proteins, small molecules and especially nucleic acids have lately attracted considerable attention. According to the World Health Organization (WHO), the POCT methods are required to follow the ASSURED guidelines (Affordable, Sensitive, Specific, User- friendly, Robust and rapid, Equipment-free, Deliverable to all people who need the test). Recently, several CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) based diagnostic techniques using the sensitive gene recognition function of CRISPR have been reported. CRISPR/Cas (Cas, CRISPR associated protein) systems based detection technology is the most innovative gene analysis technology that is following the ASSURED guidelines. It is being re-emerged as a powerful diagnostic tool that can detect nucleic acids due to its characteristics that enable rapid, sensitive and specific analyses of nucleic acid. The first CRISPR-based diagnosis begins with the discovery of the additional function of Cas13a. The enzymatic cleavage occurs when the conjugate of Cas protein and CRISPR RNA (crRNA) detect a specific complementary sequence of the target sequence. Enzymatic cleavage occurs on not only the target sequence, but also all surrounding non-target single-stranded RNAs. This discovery was immediately utilized as a biosensor, and numerous sensor studies using CRISPR have been reported since then. In this review, the concept of CRISPR, the characteristics of the Cas protein required for CRISPR diagnosis, the current research trends of CRISPR diagnostic technology, and some aspects to be improved in the future are covered.

Performance Comparison of the JPED and Full Frame Bit Allocation Techniques for Medical Image Compression

  • Ahn, C.B.;Ro, D.W.;Lee, J.S.
    • Proceedings of the KOSOMBE Conference
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    • v.1992 no.05
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    • pp.58-63
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    • 1992
  • The discrete cosine transform (DCT)-based progressive coding standard proposed by the International Standardization Orgnnization (ISO) Joint Photographic Experts Groups (JPEG) is investigated for medical image compression and the performance of the JPEG is compared to that of the full-frame bit-allocation (FFBA) technique. From the comparison, the JPEG standard appeals superior to the FFBA technique in the following aspects: 1) JPEG achieves higher compression than the FFBA technique with less mean square error. 2) Less Gibb's artifact is observed in the compressed images by the JPEG. 3) Computational time for the JPEG is about one-fourth or the FFBA technique. Other attractive points of the JPEG include: Implementation of the JPEG with VLSIs is commercially available in relative low price and the JPEG compression format can easily be interchangeable with other applications.

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