• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2002년도 추계종합학술대회
• /
• pp.348-351
• /
• 2002

컴퓨터의 발달과 의료기기의 디지털화로 인해 의료영상 분야도 디지털화되고 있다. DICOM 표준을 따르는 PACS 시스템의 구축과 원격 진료 등으로 의료영상의 데이터 베이스화와 장기간의 저장이 필요하게 되었으며, 의학 정보에 대한 불법적 변형과 데이터 인증 및 소유권에 관한 문제 또한 발생되고 있다. 본 논문에서는 의료영상에 대한 기하학적 변형 및 개인 정보를 보호하는 방법으로 워터마킹을 제안한다. 기존의 워터마킹 기법이 기하학적 변형에 민감한 것을 의료영상과 연관하여 RST변형에 강인한 워터마킹을 구현하였다. FFT와 LPM 변환을 이용하여 RST 변환에 강인한 영역을 생성한 뒤 워터마크를 삽입하여 의료 영상에서의 여러 가지 신호 처리 및 공격에 대한 강인성을 관찰하였다.

• 한국시스템다이내믹스연구
• /
• 제6권2호
• /
• pp.53-71
• /
• 2005

In the short view, the medical fee regulation has contributed for patients by reducing their hospital expenses and helping them to visit hospital more easily. But, some medical parts have gone into red ink because the medical fee has been different with each item. So, that medical parts have been experienced the medical specialist shortage. And some hospitals have been interested in high-priced medical services to cover their deficit. Moreover, most medical doctors don't need to use low-priced medicine undergo these circumstance, domestic small and medium pharmaceutical company has been going into bankruptcy and the dependence on foreign drug company has been rising. If these abnormal medical service keep to patience, people will get more burden of medical fee cause 9 casual loop work very complicated. In other words, present medical fee regulation were made by some politicians who had plain thinking. Those who govern the people, therefore, stand for not present medical service user but the welfare and health promotion of people and give attention to desirable medical fee with systems thinking.

• 약학회지
• /
• 제57권5호
• /
• pp.369-375
• /
• 2013

Objective: Using the Korean Health Panel data (KHP) of 2008 and 2009, this paper analyzed the effect of antihypertension medication adherence on the changes in medical service utilization and medical expenditure in the next year. Method: Through a face-to-face interview survey, KHP has provided an extensive data on demographic characteristics, medical utilizations behavior, medical expenditure and health behaviors of the targeted households and their members since 2008. KHP is recognized as highly accurate regarding medical expenditure in that it makes the target households to record 'Health diary' whenever they use healthcare service, which could minimize their cognitive bias or memory distortion. The 2010 KHP data was based on the interview from 6,432 households and 19,697 household members. Two part model was used to explore the effects of medication adherence on medical use (logistic regression analysis) and medical expenditures (OLS). Result: Our study result demonstrated that the 74.7% of the patients who strictly adhere to their medication in both years, in 2008 and in 2009, were likely to use inpatient service in 2010. This shows the noncompliant patients were in fact use emergency service less than the compliant patients. Conclusion: Based on our analysis, this paper concludes that the high medication adherence of hypertensive patients could contribute to reduce the emergency service use. Therefore it is highly recommendable for the Korean government and the insurer, NHIS, to actively invest in developing education and promotion program to improve medication adherence among hypertensive patients.

• Journal of Communications and Networks
• /
• 제13권2호
• /
• pp.149-159
• /
• 2011

In this paper, we study the problem of how to design a medical-grade wireless local area network (WLAN) for healthcare facilities. First, unlike the IEEE 802.11e MAC, which categorizes traffic primarily by their delay constraints, we prioritize medical applications according to their medical urgency. Second, we propose a mechanism that can guarantee absolute priority to each traffic category, which is critical for medical-grade quality of service (QoS), while the conventional 802.11e MAC only provides relative priority to each traffic category. Based on absolute priority, we focus on the performance of real-time patient monitoring applications, and derive the optimal contention window size that can significantly improve the throughput performance. Finally, for proper performance evaluation from a medical viewpoint, we introduce the weighted diagnostic distortion (WDD) as a medical QoS metric to effectively measure the medical diagnosability by extracting the main diagnostic features of medical signal. Our simulation result shows that the proposed mechanism, together with medical categorization using absolute priority, can significantly improve the medical-grade QoS performance over the conventional IEEE 802.11e MAC.

• Korean Journal of Acupuncture
• /
• 제24권3호
• /
• pp.67-79
• /
• 2007

Objectives : The Purposes of this study were to investigate payment system for oriental medical treatment as supplier of medical services, and to estimate reasonable levels of medical fee. Methods : This study made these following results by reviewing the answers which were given by 172 Korea traditional doctors from March 1 to April 15, 2006. Results : General satisfaction of payment system for oriental health insurance was $2.17{\pm}1.01$ $(mean{\pm}SD)$ on a 1-7 scale (median 4) as very low level. Reasonable medical fees which were answered by 172 Korea traditional doctor are higher than present fees, thus Korea traditional doctors think that present fees should be increased. And according to the survey, current insurance fees have a problem of disparity between each treatment fee. Conclusions : According to results of this study, current fees of oriental medical treatment are not rational. And this problem leads to distortion of medical treatment. Additional studies in thls field are needed.

• Journal of Oral Medicine and Pain
• /
• 제46권4호
• /
• pp.125-130
• /
• 2021

Purpose: The dental age estimation of children is performed using dental maturity. Postmortem missing of the anterior teeth or the distortion of image of the anterior teeth in panoramic radiographs can make it difficult to analyze the development of the anterior teeth. This pilot study was conducted to derive a new age estimation method based only on the developmental stage of mandibular posterior teeth. Methods: This study was conducted using panoramic radiographs of 650 subjects aged 3 to 15 years old. The dental developmental stages of the lower left first premolar, second premolar, first molar and second molar were evaluated according to the Demirjian's criteria. The intra-/inter-observer reliability was evaluated, and multiple linear regression analyses were performed including the developmental stage of each tooth as an independent variable. Results: The intra-/inter-observer reliability was 0.9626 and 0.8877, respectively, and showed very high reproducibility. Multiple linear regression analyses were performed for males and females, and the age calculation table was derived by obtaining the intercept and the coefficient according to the development stage of each tooth. The coefficient of determination (r²) of the age calculation method was 0.9634 for male and 0.9570 for female subjects, and the mean difference between chronological age and estimated dental age was -0.42 and -0.21, respectively. Conclusions: This pilot study evaluated the developmental stages of four lower posterior teeth in the Korean group according to Demirjian's criteria, and derived age estimation method. The accuracy was lower than when more teeth were used, but it will be useful to estimate age of children when the anterior teeth are difficult to accurately analyze.

• 한국음향학회:학술대회논문집
• /
• 한국음향학회 1998년도 학술발표대회 논문집 제17권 1호
• /
• pp.351.1-355
• /
• 1998

Network-based real-time multimedia applications require guaranteed performances of communication service. Also according to increased bandwidth and processing performance in the future high speed networks, it is possible to make multimedia real-time applications such as distributed real-time applications including video conference, medical imaging, and video education. These applications have characteristics of stringent performance requirements in terms of delay, delay jitter and maximum loss rate. This paper proposes a new delay control for Broadband networks with FCFS queueing. The delay control provides an alternative solution to a current problem in real-time communication; traffic distortion, which makes it difficult to meet such real-time requirements. In simulations, it shows that the proposed delay control can guarantee local and end-to-end delay.

• 대한물리치료과학회지
• /
• 제10권1호
• /
• pp.30-37
• /
• 2003

Purpose : The purpose of this study is giving the healthy promotion and it's related data base for out-patients who had stroke via evaluating the general characters of their active daily living and physical therapy Method : This study researched 81 patients who had received physical therapy service in 6 general hospitals located Pusan city responded to the self-assessment questionnaires from July 2002 to August 2002. Conclusion : In this study, patients were composed of 61.7% of male, 65.4% of 50's-60's in the age, 56.8% of cerebral infarction, and 60.5% of right hemiplegia. 74.1% of patients received physical therapy after 6 months from an attack, only 62.9% used orthosis & gait aids, and 59.2% received medical care 2 or 3 times per week. 40.7% of patients had over 9 hours sleeping time and 22% had reduced $1{\sim}2hours$ before hospitalization. 90% did not have drinking and smoking. 91.4% had 3 times eating per day, and 67.7% did not have good nutrition. The reasons of that were their eating habit, 542% of eating-giver, 3.7% of economic problem. 46.9% of patients used healthy food. In active daily living, patients can't do drinking by cup, voiding & defication by themselves, however patients can't do wearing/take off, etiquette for dressing, bathing, stepping by themselves. 40.7% of patients don't wear orthosis, 55.6% of patients don't use W/C. Part of physical therapy that patients concerned importantly exercise for prevention of joint distortion, management of affected side, and 80% of patients was also concerned other's part, significantly. 71.8% of patients & care-givers want to receive physical therapy at home, and 74% of patients do physical therapy by themselves at home along teached hospitalization.

• 한국방사선학회논문지
• /
• 제10권4호
• /
• pp.255-261
• /
• 2016

PET/CT 촬영에서 정량분석에 영향을 주는 다양한 인자 중 현재 상품화된 CT 조영제와 MRI 조영제의 종류별 각 성분의 특성에 따른 SUV의 변화를 비교 분석하고자 하였다. 실험장비는 Discovery 690 PET/CT(Ge)와 NEMA NU2-1994 PET phantom를 이용하였고, 팬텀에 증류수 2/3를 채워 넣은 후 방사성동위원소(18F-FDG 37 MBq)와 각각의 CT와 MRI 조영제를 순차적으로 주입하여 팬텀을 고르게 교반하고 다시 증류수를 가득 채운 후 기포가 생기지 않게 하였다. 방출스캔은 FDG 또는 FDG와 혼합한 조영제를 넣고 40분에 15분 동안 스캔하였으며, 투과스캔은 CT로 관전압 120 kVp, 관전류 40 mA, 회전시간 0.5 sec, 단면두께 3.27 mm, DFOV 30 cm의 조건으로 스캔하였다. 분석방법으로 정량분석은 각각 10, 15, 20, 25, 30번째 slice에서 region of interest (ROI)를 설정하여 각각 SUVmean, SUVmax를 구하였다. 결과적으로 순수 FDG 영상과 비교에서 MRI 조영제를 혼합한 3종류의 영상 모두에서 SUVmean가 높게 측정되었으나 통계적 유의성은 없었고, SUVmax 에서는 유의한 결과를 얻었다. 또한 4종류의 CT 조영제 영상은 SUVmean, SUVmax 모두 유의한 결과를 얻었다. PET/CT는 영상의 정확도를 위해 감쇠 보정은 다양한 방법으로 시행되고 있지만 CT와 MRI 조영제는 감쇠보정 시 영상의 왜곡에 의한 진단적 가치를 저하시킬 수 있다. 이러한 이유로 진료 당일 여러 종류의 검사를 시행하기 전 반드시 선행되어야 할 검사를 선별하여 서로 영향을 주지 않도록 함으로서 고객에게 차별화된 양질의 의료서비스를 제공해야 한다.