• Journal of Information Processing Systems
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• 제11권4호
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• pp.601-615
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• 2015

Region of interest (ROI) is the most informative part of a medical image and mostly has been used as a major part of watermark. Various shapes ROIs selection have been reported in region-based watermarking techniques. In region-based watermarking schemes an image region of non-interest (RONI) is the second important part of the image and is used mostly for watermark encapsulation. In online healthcare systems the ROI wrong selection by missing some important portions of the image to be part of ROI can create problem at the destination. This paper discusses the complete medical image availability in original at destination using the whole image as a watermark for authentication, tamper localization and lossless recovery (WITALLOR). The WITALLOR watermarking scheme ensures the complete image security without of ROI selection at the source point as compared to the other region-based watermarking techniques. The complete image is compressed using the Lempel-Ziv-Welch (LZW) lossless compression technique to get the watermark in reduced number of bits. Bits reduction occurs to a number that can be completely encapsulated into image. The watermark is randomly encapsulated at the least significant bits (LSBs) of the image without caring of the ROI and RONI to keep the image perceptual degradation negligible. After communication, the watermark is retrieved, decompressed and used for authentication of the whole image, tamper detection, localization and lossless recovery. WITALLOR scheme is capable of any number of tampers detection and recovery at any part of the image. The complete authentic image gives the opportunity to conduct an image based analysis of medical problem without restriction to a fixed ROI.

• 방사선산업학회지
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• 제11권1호
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• pp.27-31
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• 2017

Reliable follow-up of bone mineral density (BMD) by dual energy X-ray absorptiometry (DXA) is essential in clinical practice. When there is a difference in the BMD values from DXA systems in the same patient, cross calibration equation is required for the reliable follow-up. Unfortunately, no equation is existed in BMD measure between GE Lunar Prodigy Advance (US, GE Healthcare; LPA) and Osteosys Dexxum T (Korea, Osteosys; ODT) DXA systems. In this study, we evaluate the agreement of BMD values between LPA and ODT and suggest the cross calibration equation using European spine phantom (ESP) with two systems. We performed BMD measurements using ten scans with ESP in each DXA systems. We compared BMD values and calculated cross calibration equation by linear regression analysis. The comparison between the LPA and ODT bone densitometers used the ESP. Compared to the ESP BMD values, ODT underestimated 14.36% and LPA overestimated 12.96%. The average of total BMD measurement values acquired with ODT were 21.44% lower than those from LPA. Cross-calibration equation for LPA and ODT was derived from ESP. We calculated simple cross calibration equation for LPA and ODT DXA systems. Cross-calibration equation is necessary for the reliable follow-up of BMD values in two different systems.

• 한국항행학회논문지
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• 제18권6호
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• pp.619-624
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• 2014

스마트폰의 발달과 더불어 각종 스마트 디바이스가 발달되고 있는 요즘 사람의 신체에 부착하여 컴퓨팅할 수 있는 웨어러블 디바이스가 각광받고 있다. 본 논문에서는 사용자의 움직임을 감지할 수 있는 손목시계형 웨어러블 디바이스를 개발하고 더불어 스마트TV, 스마트폰과 연동하여 사용자들이 효과적으로 자신의 신체정보를 저장, 관리를 할 수 있는 시스템을 개발 및 연구를 진행하였다. 기존의 헬스케어 웨어러블 디바이스는 스마트폰과의 연동을 통해 정보를 저장한다. 그리고 스마트 TV 헬스 애플리케이션은 카메라를 이용한 모션인식이 주를 이룬다. 하지만, 스마트폰과의 연동에서는 제조사마다 지원하는 기기에 제한이 있으며 스마트 TV의 경우도 제조사마다 카메라의 장착 여부가 다르기 때문에 사용자가 사용하기에는 한계가 있다. 웨어러블 디바이스와 스마트폰을 이용하여 수집된 사용자 정보를 이용하여 언제, 어디서나 운동하고 관리할 수 있다. 또한 이러한 정보는 스마트TV 애플리케이션을 통해 확인할 수 있다. 이 시스템을 이용하여 향후 사용자의 움직임을 더욱더 정밀하게 측정할 수 있는 인식기술과 타 디바이스와의 연동에 관한 연구에 활용할 수 있을 것이다.

• 농촌의학ㆍ지역보건
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• 제49권2호
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• pp.132-145
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• 2024

본 연구는 국내 의료기관 중심 보건의료·복지통합 서비스 활성 방안을 모색하기위하여 대구의료원 달구벌건강주치의사업, 삼척의료원 301 네트워크 사업, 부산의료원 3 for 1 사업 을 프로그램 논리모형을 적용하여 사례 비교하였다. 상황적 측면에서 세 사업 모두 보건의료·복지 서비스의 분절과 의료사각지대 문제를 해결하기 위해 고안되었으며, 투입 요소 중 인력은 모두 다학제 팀 구성 현황은 유사하였으나 구체적인 구성 분야, 채용 규모, 고용 형태, 에서는 기관별 차이가 있었다. 예산을 지원받는 재원 출처의 차이로 각 사업은 지역사회와 협력하고 지원하는 방식과 향후 방향성에서의 차별성도 확인할 수 있었다. 산출은 수혜대상자 수와 진료 건수에 차이가 있었으며, 투입인력 또는 운영비 대비실인원 수, 수혜대상 1인당 사업비 비교시 다른 결과를 확인하였다. 의료기관 중심의 보건의료·복지 통합제공체계의 설계 시 우선적으로 권고하는 상황은 안정적인 기금마련 기전을 확보하고 이에 합당한 대상자와 서비스 전달체계를 구축하라는 것이다. 또한, 의료기관 내 사례관리 전담기구로서 각 부문의 활동을 연계할 수 있도록 위탁이 아닌 전담부서 설치, 적정 규모의 채용, 안정적 고용 체계가 필요하며, 민·관 협력 및 경증부터 중증까지 제공할 수 있는 포괄적 제공체계 구축을 제안한다. 이를 통해 의료기관 중심보건의료복지 통합 서비스 제공 사업은 지역사회에서 풀리지 않는 난제였던 보건의료 서비스 강화와 촘촘한 연계를 가능하게 함으로 궁극적인 지역사회 건강안전망 역할 강화를 기대한다.

• 의학교육논단
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• 제25권3호
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• pp.198-211
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• 2023

Health systems science (HSS) is recognized as the third pillar of medical education. alongside basic and clinical sciences. Today's physicians must also be systems thinkers who are able to discern how social, economic, environmental, and technological forces influence clinical decision-making. This study aimed to propose strategies for structuring an HSS curriculum that is tailored to the Korean healthcare and medical education context. First, the authors of this study conducted a survey to identify the present curricular contents of HSS related education at Korean medical schools. Second, a needs assessment was performed to determine the necessity of HSS competencies, as well as the prerequisites for the seamless integration of HSS into the existing curriculum. Third, literature reviews on HSS education at 14 US medical schools and expert consultations was conducted. We would like to propose a set of strategic approaches, classified into two levels: comprehensive and partial restructuring of the current medical curriculum to incorporate HSS. The partial restructuring approach entails a gradual, incremental incorporation of HSS content, while maintaining the current curricular structure. In contrast, a complete overhaul of the curriculum may be ideal to build HSS as the third pillar of medical education, but its feasibility remains relatively limited. The partial reorganization approach, however, has the advantage of being highly feasible. Collaborative efforts between professors and students are imperative to collectively devise effective methods for the seamless integration of HSS into the existing curriculum.

• 시스템엔지니어링학술지
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• 제15권2호
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• pp.72-78
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• 2019

Pathology is the motor that drives healthcare to understand diseases. The way pathologists diagnose diseases, which involves manual observation of images under a microscope has been used for the last 150 years, it's time to change. This paper is specifically based on tumor detection using deep learning techniques. Pathologist examine the specimen slides from the specific portion of body (e-g liver, breast, prostate region) and then examine it under the microscope to identify the effected cells among all the normal cells. This process is time consuming and not sufficiently accurate. So, there is a need of a system that can detect tumor automatically in less time. Solution to this problem is computational pathology: an approach to examine tissue data obtained through whole slide imaging using modern image analysis algorithms and to analyze clinically relevant information from these data. Artificial Intelligence models like machine learning and deep learning are used at the molecular levels to generate diagnostic inferences and predictions; and presents this clinically actionable knowledge to pathologist through dynamic and integrated reports. Which enables physicians, laboratory personnel, and other health care system to make the best possible medical decisions. I will discuss the techniques for the automated tumor detection system within the new discipline of computational pathology, which will be useful for the future practice of pathology and, more broadly, medical practice in general.

• International Journal of Fuzzy Logic and Intelligent Systems
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• 제11권4호
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• pp.229-237
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• 2011

As smart phones have become widely adopted, they have brought about changes in individual lifestyles, as well as significant changes in the industry. As the mobile technology of smart phones has become associated with all areas of industry, it is not only accelerating innovation in other industries such as shopping, healthcare service, education, and finance, but is also creating new markets and business opportunities. The preparation of thorough security measures for smart phones is increasing in demand. While offering excellent mobility and convenience, smart phones can be exposed to a range of violation threats. In particular, it is necessary to make efforts to develop a security system that can preemptively cope with potential security threats in the banking service area, which requires a high level of reliability. This paper suggests a security reference model that is considered for the smart phone-based joint mobile banking development project being undertaken by the Bank of Korea in 2010. The purpose of this study is to make a security reference model for a reliable smart phone-based mobile financial service, by recognizing the specific security threats directed toward smart phones, and providing countermeasures to these security threats. The proposed mobile banking security reference model is useful in improving system security by systematically analyzing information security threats to the mobile financial service, and by presenting the guideline for the preparation of countermeasures.

• 한국정보시스템학회지:정보시스템연구
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• 제19권4호
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• pp.51-63
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• 2010

U-City applies ubiquitous information technologies such as RFID, GPS, USN to various components of city functions and services. The concept of U-City was popularized especially in Korea and currently more than 40 projects have been carrying out all over country. U-City incorporates advanced information communication technologies into ubiquitous information services to provide better quality of life. The purpose of this study is to analyze preferences for the U-City services by surveying experts in U-City developing companies. This study employs Analytic Hierarchy Process which is very useful tool for performing multi-criteria decision making. Total of 28 responses were used in the analysis. The results indicated that the first 7 most preferred items were from transportation and safety area and environment and healthcare area and 4 out of 6 items in transportation and safety area were ranked among them. It implies that respondents consider countering anxiety caused by congested traffic, natural disasters, crimes, etc most important aspect that U-City should deal with. On the other hand, U-Port, U-Convention, U-Logistics, U-Public Administration and U-City Portal were listed as the least preferred services.

• 대한산업공학회지
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• 제39권1호
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• pp.20-29
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• 2013

Medical errors such as adverse drug event, improper transfusion, wrong-site surgery, mistaken patient identity and so on commonly occur at health care practice. Information technology, like Drug Utilization Review(DUR) system which reviews, analyzes, and interprets medication data when prescribing, can play a key role in reducing such medical errors and improving patient safety. Korean Government has guided all hospitals to implement concurrent DUR(cDUR) system, which is the first case worldwide in that all healthcare providers have to use cDUR system when prescribing. This paper introduced a case study that a tertiary hospital has integrated the cDUR system into its comprehensive Hospital Information System(HIS) and analyzed the whole prescription data during a week right after adoption of cDUR system. Considering technical strength and weakness, the cDUR system was integrated into the HIS, using Broker Servers for minimizing doctors' anxiety. As the quantitative analysis of the whole prescription data, DUR conflict events, which mainly included duplicate medications and contra-indicated drug interactions for outpatients, were 2.77%. Although only 0.7% is for the contra-indicated drug interactions, it will be greatly devoted to achieve the purpose of DUR such as improving patient safety.

• 한국산업정보학회논문지
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• 제19권3호
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• pp.115-125
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• 2014

This paper has two purposes. The first is to suggest the new and simple method to derive a regional input-output model from the national input-output table published by the Bank of Korea. The interregional input-output table has not been devised in spite of its potential use while the national table has been made every five years with the revised version during each five years. Second, this paper aims to derive Kangwon interregional input-output model from the national model using the regional supply proportion of industry and to analyze the effect of medical tourism industry on the regional economy of Kangwon Province. The paper measures, in particular, the effect of medical tourism industry on the financial self-sufficiency of Kangwon Province using the estimated output elasticity of tax revenue with the autoregressive distributed lag scheme ADL(1,1) in which the dependent variable and the single explanatory variable are each lagged once.