• Nuclear Engineering and Technology
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• 제45권5호
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• pp.695-700
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• 2013

Thirty-eight radiation safety reports for brachytherapy equipment were evaluated to determine the current status of brachytherapy units in Korea and to assess how radiation oncology departments in Korea complete radiation safety reports. The following data was collected: radiation safety report publication year, brachytherapy unit manufacturer, type and activity of the source that was used, affiliation of the drafter, exposure rate constant, the treatment time used to calculate workload and the HVL values used to calculate shielding design goal values. A significant number of the reports (47.4%) included the personal information of the drafter. The treatment time estimates varied widely from 12 to 2,400 min/week. There was acceptable variation in the exposure rate constant values (ranging between 0.469 and 0.592 ($R{\cdot}m^2/Ci{\cdot}hr$), as well as in the HVLs of concrete, steel and lead for Iridium-192 sources that were used to calculate shielding design goal values. There is a need for standard guidelines for completing radiation safety reports that realistically reflect the current clinical situation of radiation oncology departments in Korea. The present study may be useful for formulating these guidelines.

• Korean Journal of Radiology
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• 제21권5호
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• pp.588-597
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• 2020

Objective: To investigate the value of combined chemical exchange saturation transfer (CEST) and conventional magnetization transfer imaging (MT) in detecting metabolic and structural changes of renal fibrosis in rats with unilateral ureteral obstruction (UUO) at 3T MRI. Materials and Methods: Thirty-five Sprague-Dawley rats underwent UUO surgery (n = 25) or sham surgery (n = 10). The obstructed and contralateral kidneys were evaluated on days 1, 3, 5, and 7 after surgery. After CEST and MT examinations, ¹⁸F-labeled fluoro-2-deoxyglucose positron emission tomography was performed to quantify glucose metabolism. Fibrosis was measured by histology and western blots. Correlations were compared between asymmetrical magnetization transfer ratio at 1.2 ppm (MTR_asym(1.2ppm)) derived from CEST and maximum standard uptake value (SUV_max) and between magnetization transfer ratio (MTR) derived from MT and alpha-smooth muscle actin (α-SMA). Results: On days 3 and 7, MTR_asym(1.2ppm) and MTR of UUO renal cortex and medulla were significantly different from those of contralateral kidneys (p < 0.05). On day 7, MTR_asym(1.2ppm) and MTR of UUO renal cortex and medulla were significantly different from those of sham-operated kidneys (p < 0.05). The MTR_asym(1.2ppm) of UUO renal medulla was fairly negatively correlated with SUV_max (r = -0.350, p = 0.021), whereas MTR of UUO renal medulla was strongly negatively correlated with α-SMA (r = -0.744, p < 0.001). Conclusion: CEST and MT could provide metabolic and structural information for comprehensive assessment of renal fibrosis in UUO rats in 3T MRI and may aid in clinical monitoring of renal fibrosis in patients with chronic kidney disease.

• 한국통신학회논문지
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• 제38C권5호
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• pp.464-470
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• 2013

현재 헬스케어에 대한 관심이 높아지면서 건강정보측정기기에 필수적으로 적용되어야 할 표준에 대한 연구가 활발히 진행되고 있다. 이러한 표준화 및 시험/인증은 IEEE 11073 PHD, Health Level Seven 그리고 Continua Health Alliance를 통해 진행되고 있으며, 앞으로 더 많은 연구와 실험이 계속될 것이라고 생각된다. 본 논문에서는 원격 건강 정보의 교환을 위한 표준인 IEEE 11073 PHD와 Bluetooth의 건강정보측정기기를 위한 프로파일인 Bluetooth Health Device Profile(HDP)을 소개하고, HDP가 적용된 스마트 디바이스와 건강정보측정기기 간 개인의 건강 정보를 교환하는 실험을 진행하였다. 실험을 통해 HDP를 이용하여 IEEE 11073 PHD 표준 프로토콜의 송수신으로 스마트 디바이스와 건강정보측정기기 간에 상호연결 및 운용이 가능함을 확인할 수 있었고, 향후 이를 지원하는 기기를 통해 다양한 원격 의료 서비스가 구현될 수 있을 것이라 기대한다.

• 한국정보전자통신기술학회논문지
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• 제15권2호
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• pp.164-177
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• 2022

의료기기 사용적합성 평가란 최종 시제품 제작 완료이전 실제 사용자를 통한 의료기기의 평가를 말한다. 국제전자의료기기 안전규격 중 하나인 IEC 62366은 유럽 및 미국 등 주요 선진국의 의료기기 인허가 획득을 위해 반드시 적용해야 하는 규격이다. 국내의 경우 식약처 고시를 통하여 2021년 1월부터 등급별로 순차적 적용을 시행하고 있다. 본 연구에서는 (주)이끌레오에서 개발 중인 집중형초음파자극시스템의 사용자 적합성 평가 중 형성평가를 인천 G 대학 병원 의료기기융합 센터를 통하여 참가자 전문의 15인을 모집하였고, 공동 시나리오 개발을 통하여 시험을 진행하였다. 작업 수행 여부 결과에서는 90.67%의 수행율을 보였으며, 수행 완료 후 참가자 설문 조사결과 문항별 결과 분석에서 '사용자 인터페이스의 용이성' 86.67%, '정보의 식별성/가독성/이해도' 문항에서 94%의 보통 이상의 응답 비율을 보였다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5545-5550
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• 2014

Background: Human biological materials from cancer patients are linked directly with public health issues in medical science research as foundational resources so securing "human biological material" is truly important in bio-industry. However, because South Korea's national R and D project lacks a proper managing system for establishing a national standard for the outputs of certain processes, high-value added human biological material produced by the national R and D project could be lost or neglected. As a result, it is necessary to develop a managing process, which can be started by establishing operating guidelines to handle the output of human biological materials. Materials and Methods: The current law and regulations related to submitting research outcome resources was reviewed, and the process of data 'acquisition' and data 'distribution' from the point of view of big data and health 2.0 was examined in order to arrive at a method for switching paradigms to better utilize human biological materials. Results: For the deposit of biological research resources, the original process was modified and a standard process with relative forms was developed. With deposit forms, research information, researchers, and deposit type are submitted. The checklist's 26 items are provided for publishing. This is a checklist of items that should be addressed in deposit reports. Lastly, XML-based deposit procedure forms were designed and developed to collect data in a structured form, to help researchers distribute their data in an electronic way. Conclusions: Through guidelines included with the plan for profit sharing between depositor and user it is possible to manage the material effectively and safely, so high-quality human biological material can be supplied and utilized by researchers from universities, industry and institutes. Furthermore, this will improve national competitiveness by leading to development in the national bio-science industry.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.414-415
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• 2011

Due to heterogeneity in Data and Processes, healthcare systems are facing the challenge of interoperability. This heterogeneity results in different healthcare workflows of each individual organization. The compatibility of these heterogeneous workflows is possible when standards are followed. HL7 is one of the standards that is used for communicating medical data between healthcare systems. Its newer version V3 is providing semantic interoperability which is lacking in V2. The interoperability in HL7 V3 is only limited to data level and process level interoperability needs to be catered. The process level interoperability is achieved only when heterogeneous workflows are aligned. These workflows are very complex in nature due to continuous change in medical data resulting in problems related to maintenance and degree of automation. Semantic technologies plays important role in resolving the above mentioned problems. This research work is based on the integration of semantic technology in HL7 V3 standard to achieve semantic process interoperability. Web Service Modeling Framework (WSMF) is used for incorporating semantics in HL7 V3 processes and achieves seamless communication. Interaction Ontology represents the process artifacts of HL7 V3 and helps in achieving automation.

• 보건의료산업학회지
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• 제11권4호
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• pp.189-202
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• 2017

Objectives : This study aims to present a new classification system using evaluation standards to ensure the safety of transport ventilators used in Korea. Due to the rapid advancement of technology, various types of ventilators have been developed and as the range of application increases, so does demand. With quick access to information and a growing economy, the technology used in Korean hospitals is equivalent to that of other countries; however, regulatory and safety consciousness are still lagging in Korea. Methods : Based on researching overseas cases, reference data and standards for improving the current system in Korea are proposed. Results : According to the review of transport ventilator use in Korea, it was found that concerns about safety is due to the absence of a standardized classification system for evaluating the safety and effectiveness of transport ventilators. Conclusions : In order to improve the safety of patients and the quality of medical care, it is essential to establish guidelines and assessment standards guaranteeing the safety of transport ventilators in Korea. Clear definitions and classifications for devices must precede the application of such standards. In addition, effective evaluation standards should be developed in order to resolve problems and improve upon the current system through continuous validation.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2006년도 춘계종합학술대회
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• pp.1055-1059
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• 2006

최근 인터넷 기술이 비약적으로 발전하는 추세에 부응하여 의료사업분야에서도 전자처방전 및 처방 EDI 시스템이 병 의원과 약국간에 이루어지고 있다. 그러나 현재 대부분의 병 의원들의 전산화구축 현황을 볼 때 전산화시스템을 도입하지 않은 병 의원이 많고 워드프로세스로 발급하거나 수기로 처방하는 현실이다. 이런 병 의원들을 웹을 통한 처방전관리를 하게 된다면 데이터의 호환성 및 약국과의 연계를 통해 처방에 대한 검증까지 가능할 것이다. 본 논문에서 의료자료의 처방전표준양식을 설계하고 이용자가 처방전발급을 위해 별도의 환경설정을 하지 않고 운영환경에 무관하도록 XML 웹기반의 처방전양식표준을 개발하였고 이용자의 인터페이스를 편리하게 하면서 프로그램 유지보수가 용이하도록 데이터베이스의 검색결과를 XML형태로 작성하도록 구현하였다.

• 한국IT서비스학회지
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• 제10권1호
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• pp.177-190
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• 2011

Due to the growth of economy and the advancement of IT, the life expectancy has been prolonged and the interests in health have greatly increased. Recently the request for systems that enable measuring the bio-signals of patients in the non medical organizations, such as home, and transmitting them to medical staffs at remote sites for monitoring them. In this paper, we present an agent-based u-health system for patients or suspects with heart diseases. Our system consists of portable devices for measuring bio-signals and agents that perform data collection, data storage, automatic detection of abnormal status in patients, and HL7-based data exchange in a cooperative way. The main features of the system are : the agent-based architecture facilitates the addition of new service modules as well as the modification of existing ones; an intelligent agent is provided which automatically detects situations in which the bio-signals of patients are abnormal; the medical data standard is supported so that the communication with other systems is very easy. To our survey, there have been few previous systems which support all those features in a seamless way.

• 디지털융복합연구
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• 제11권7호
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• pp.149-155
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• 2013

최근 차량 교통 시스템은 스마트 센서 및 외부와의 소통을 통해 교통의 효율성과 안정성을 향상시키는 교통 체계를 의미하는 지능형 교통시스템(Intelligent Transport Systems : ITS)의 형태로 진화하고 있다. 이러한 발전 추세에 반하여 국내의 ITS 서비스는 다른 주요 통신 서비스에 비해 많이 낙후되어 있다. 이러한 현상의 원인은 현재 국내에서는 국제적으로 배정된 ITS 주파수 대역 내에 방송용 주파수가 할당되어 있으며, 국내에서 ITS로 사용되고 있는 DSRC(Dedicated Short Range Communications) 방식의 주파수도 ISM(Industrial, scientific and medical) 대역을 사용하고 있기 때문에 그것의 활용에 있어서 제한적일 수밖에 없다. 본 논문에서는 국내 ITS의 기술적 현황을 분석하여 다음과 같은 ITS 활성화 방안을 제안하였다. 첫째, 기존의 DSRC방식을 포용하는 WAVE(Wireless Access in Vehicular Environments)방식의 ITS 관련 표준을 시급히 확정하여 표준 설치 사양을 마련해야 한다. 둘째, ITS 표준을 완성하기 위한 주파수 배정이 시급히 시행되어야 한다.