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Measurement of Femoral Anteversion in the PACS Image Viewer.

Journal of Korean Society of Medical Informatics.2001;7(4):41-47.

The measurement of the femoral anteversion is an important factor in the practice of orthopedic surgery. The anteversion is measured by means of the axis of head and neck of the femur. In this study, widely used computed tomography method of measuring anteversion was tested on femoral necks of patients. Measurement by the manual method and image viewer of computed tomography to determine the anteversion of femoral head were carried out on both femurs. In January and February 2001, 30 patients 3 to 6 years of age were randomly selected from Seoul National University Hospital. The purpose of this paper was to introduce a new method to measure femoral anteversion angle utilizing image viewer program. This new method was more accurate and convenient than the conventional manual method. In conclusion, PACS of image viewer program was statistically more reliable in determining the angle of the femoral anteversion.
Axis, Cervical Vertebra ; Femur ; Femur Neck ; Head ; Humans ; Neck ; Orthopedics ; Seoul

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The Design of Wavelet-based Biological Signal CODEC for Telemedicine Application.

Jae Man HUH ; Sun Kook YOO ; Nam Hyun KIM

Journal of Korean Society of Medical Informatics.2001;7(4):33-40.

In this paper, waveform preserving coding technique is proposed for the bio-signals based on wavelet transform local maxima representation. In order to efficiently encode the bio-signal, it utilize the inherent property of bio-signals that sharp waves corresponding to the local maxima in wavelet domain contain the most of the clinically significant information in general. The testing sets of ECG and EEG are experimented to select the appropriate wavelet basis and to demonstrate the usefulness regarding to coding efficiency. The spline basis is more suitable in designing the coder than the Harr basis since the spline basis produces less number of local maxima than the Harr basis. The proposed wavelet method based on spline basis outperforms the conventional subband coding technique in terms of wave form degradation and coding efficiency. The actual transmission experiment using external communication network and the general personal computer demonstrates the applicability to telemedicine system handling the bio-signals.
Clinical Coding ; Electrocardiography ; Electroencephalography ; Microcomputers ; Telemedicine* ; Wavelet Analysis

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The Development Of Automatic Analysis System For Icg Retinal Image And The Effective Classfication Of Indocyanine Green Angiography By It.

Moon Cheol LIM ; Young Hoon KIM ; Woo Saeng KIM ; Jin Sung RYU

Journal of Korean Society of Medical Informatics.2001;7(4):21-31.

The local laser solidification treatment among the therapys of age-related macular degeneration, which is immensely important in the field of ophthalmology, has been admited to be of effect. The accurate scope and the times of the cure not only play a important role of convalescence but also have a great influence on eyesight in the laser remedy. The retinal image photographed by a recent technology of ICG(Indocyanine Green) give us easy observation of avascular zone, and let us understand and predict objectively the degree of age-related macular degeneration. In this paper, we introduce the ICGI Analyzer and explain ICG image analysis methods that masure in quantities regions of hyperfluorescein area by choroidal neovascularization and detect transformations of it by image processing techniques. Also, we descript a method that ophthalmologist classify ICGA into several types on the basis of position of CNV(Choroidal NeoVascularization) using this system. We present results of applying ICG retinal image of patients to ICG Analyzer and typical frequency of age-related macular degeneration investigated by experts for testing the objectivity and accuracy of proposed methods.
Angiography* ; Choroidal Neovascularization ; Convalescence ; Humans ; Indocyanine Green* ; Linear Energy Transfer ; Macular Degeneration ; Ophthalmology ; Retinaldehyde*

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The Analysis of Health Promotion Information On the Internet.

Young Sung LEE ; Young Hee JU ; Min Kyung IM ; Sang Woo O

Journal of Korean Society of Medical Informatics.2001;7(4):11-20.

The recent widespread use of computers and improvement of the internet technology have made people of every walk of life get plenty of information of various contents, including health and medicine. However, the efforts to verify and evaluate those Internet-based information fall far short of the ever-increasing number of web-sites dealing with health and medicine. These efforts are particularly important for the web-sites regarding health promotion, because they can render the general population to nourish their potentials to lead healthy lives, and provide wide variety of information, including every steps of natural courses of diseases till death. In the present study, a total of 100 web-sites regarding health promotion were selected through six domestic major searching engines, considering the contents and methods of evaluation. The evaluations were performed as to the 8 items comprising 3 fields, or the owners' credentials, transparency of sponsorship, and information publication form, along with analyses of the conditions of information-providing agencies and forms of providing on-line education program for health promotion. Results have shown that the average of the total marks of evaluation was 4.52 out of 8. The web-sites with points of +1SD from the average or more (6~8 points) accounted for 19% and those with -1SD from the average or less (~3 points) accounted for 20%. Only 2% of the total web-sites evaluated showed full marks (8 points). As to the agencies providing information, relevant social organizations, including corporations, accounted for the largest part (25%), followed by joint-stock companies and sales companies, which accounted for 24%. These figures represent a maximum of 6-fold as much as information provided by organizations with public confidence, such as institutes, hospitals, and public health centers. In addition, up to 81% of the on-line education programs were provided in the form of usual text, suggesting the lack of appropriate technology of providing information. On the other hand, the number of web-sites on health promotion/risk factors showed differences according to the searching engines used, and the number of those regarding health promotion was larger than that regarding risk factors for health. There was no single web-site searched commonly by five or six engines, and most web-sites were searched by only one engine. These results show that continuous systematic controls and evaluations are needed for the internet web-sites on health promotion, and that these require government-driven analyses of information contents, standardization, and comprehensive support.
Academies and Institutes ; Commerce ; Education ; Hand ; Health Promotion* ; Internet* ; Public Health ; Publications ; Risk Factors

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A Comparative Study on the 'Sign or Symptom' Concepts of the UMLS(Unified Medical Language System) and Clinical Terms in Korean Medical Records.

Seung Bin HAN ; Jin Wook CHOI

Journal of Korean Society of Medical Informatics.2001;7(4):1-10.

The UMLS is a long-term NLM research and development effort designed to facilitate the retrieval and integration of information from multiple machine-readable biomedical information sources. It is one of the most comprehensive medical terminology systems. The UMLS is to make available to develop systems such as information retrieval, decision-making support system, natural language processing, and voice recognition in medical fields because it can be easily integrated with other systems or databases. It is now support about 15 languages like French, German, Finnish, and Spanish. The goal of this paper is to estimate the availabilities and usefulness that when we will apply the electronic medical records system and then support to Korean medical vocabulary integration. We tested mapping between chief complaint extracted from the discharge records in Seoul National University Hospital and the UMLS sign or symptom concepts term. Among 35% of chief complaint of the SNUH were Conceptually matched with the UMLS Sign or Symptom concepts. Most of 58% these terms were such that diagnosis, operation names, clinical laboratory test not Sign or Symptom terms. The rest terms of 7% were not found in the UMLS or these terms that different application of used concepts. While the UMLS terms are so specific and diverse about patients sign or symptom, we used simplified and usually based on the anatomical region records. Through this study, we exposed underlying of flaws currently in use clinical terms and analyzed the differences of expression patterns in clinical records between the two vocabulary system, we propose the UMLS application of Korean medical vocabulary translation with appropriateness and Interoperability of the UMLS for development the Korean medical technologies.
Diagnosis ; Electronic Health Records ; Humans ; Information Storage and Retrieval ; Medical Records* ; Natural Language Processing ; Seoul ; Unified Medical Language System ; Vocabulary ; Voice

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The Analysis of Mass Physical Screening Using the Concept of Data Warehousing Short subject: Data Warehousing and Mass Screening.

Jae Ok LEE ; Yun Sik KWAK ; Won Ki MIN ; Jin Wook CHOI ; Han Ik CHO

Journal of Korean Society of Medical Informatics.1998;4(2):111-114.

Vast quantities of data are generated through the health care process. While many studies to analyze the multiple database are being tried in the business area, a few studies have been done in medical area. We tried to study the seasonal variation of tests using two hospital data on mass screening. We received 79772 data from Seoul Joongang Hospital and 12330 data from Ajou University Hospital, and changed from text file to DBF. Inpromptu and Powerplay were used as the tools of data warehousing. The modeling and analysis was done effectively through the tools. The tests of seasonal variation were 6 items.
Commerce ; Delivery of Health Care ; Mass Screening* ; Seasons ; Seoul

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Development of Infection Control Courseware.

Kyu Sook KANG ; Ji Soo YOO ; Il Sun KO

Journal of Korean Society of Medical Informatics.1998;4(2):103-110.

Computer-Assisted Instruction(CAI) is one kind of teaching method to teach leaners knowledge, attitude, and technical aspect of course contents through utilizing a computer as a learning material. CAI is focused on the concept of interaction and individualized learning. Thus in teaching and learning process CAI is considered the individual differences of learners. And learners can study course contents repeatedly through utilizing courseware. Based on the importance of individualized learning program through utilizing a computer the courseware of infection control was developed to acquire and apply the appropriate knowledge for controlling infection for learners.
Individuality ; Infection Control* ; Learning ; Teaching

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Development of Oral Pathology Learning Support System based on MMDB.

Myeng Ki KIM

Journal of Korean Society of Medical Informatics.1998;4(2):95-101.

Collecting, managing and processing course material requires of much costs and efforts while they include a variety of data types particularly in the health field. Some engineering work on the material may help reduce the workload and costs to some extent. With such benefits having in mind, this paper tries to develop multimedial database for the course material of Oral Pathology in dental schools. It provides structured analysis of data for the course material, in which a unit of disease is a central class with relation to many other classes. It also achieved data independence from server applications by using the method concept of object-oriented database(OODB), which will increase reusability of the course data. Using another important concept of OODB, the system devised many functional utilities on an Internet web server including lecture notes, case studies, disease search, and question and answer, and shows how they are operated. But the effectiveness for the part of student users may remain to be evaluated.
Humans ; Internet ; Learning* ; Pathology, Oral* ; Schools, Dental

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A Design of Electronic Textbook Using the Multimedia Data Server.

Sung Ho HAN ; Moon Il PARK ; Ki Young RYU ; Byung Hyun HWANG ; Byung Uk CHOI

Journal of Korean Society of Medical Informatics.1998;4(2):87-93.

Clinical education is difficult for actual practice of medical students. In particular, the practice in the field of obstetrics is more difficult to many students. Moreover, the education of sub-fields of obstetrics such as birth or abortion needs many materials of women's reproductive organs. However, the ordinary paper-based textbooks have some limitations for clinical education of obstetrics. The electronic textbook system based on multimedia data enables that many student, doctor, and public user overcome these difficulties, as a computer assisted learning. We developed multimedia database system which is connected with web using ODBC(Open DataBase Connectivity)and ASP(Active Server Page)/IDC(Internet DataBase Connection). Many text and multimedia data are gathered in the database. This system serves various multimedia data using internet and intranet in the student's class or home. In conclusion, providing multimedia data of obstetrics using ODBC, ASP/IDC method reduce the limitation of clinical education. This model of the electronic textbook would be a reference to develop multimedia database on the network.
Computer Communication Networks ; Education ; Humans ; Internet ; Learning ; Multimedia* ; Obstetrics ; Parturition ; Students, Medical

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Question Pool System for Medical Examination Using HTML and Microsoft Access.

Sung Wan BYUN ; Soon Kwan HONG

Journal of Korean Society of Medical Informatics.1998;4(2):81-86.

Examination is indispensable to medical education. It qualifies medical education, drives medical students to study hard, and provides guides for the students acquiring a large amount of medical knowledge. This study provides an approach to organize the question pool for medical examination. In this approach, many questions in the form of HTML based texts were stored and managed in text-and memo-type field of Microsoft Access database system. They could be retrieved from the database in computer-generated HTML file, which could be read in word processors and web browsers. Several advantages of HTML bases text were emphasized. Though they are essentially text format data which can be stored and processed easily in text-type field of databases, they don't lose character attributes such as bold, italic, underlined, superscript, subscript and so on. Also they can provide table facility and links to external graphic files. This approach can be applied in other medical information retrieval system.
Education, Medical ; Humans ; Information Systems ; Students, Medical ; Web Browser

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