Abstracts Ò.2 ¹1 2005
Automated system for supporting of medical equipment actual condition of disaster medicine medicical formations
Some practical items in developing of the comprehensive automated management inside Ukrainian scientific practical center of emergency first aid and disaster medicine to be aimed for operative management decisions in time of emergency situations are outlined. They were presented from the views of principles in developing of modern integrated information systems while taking into consideration various for disaster medicine service organizational and field’s medical practice aspects.
Keywords: disaster medicine, management, organization, automated system.
O.Yu. Mayorov (1,2,3), V. N. Fenchenko (1,3,4)
Application of Karunen-Loev expansion for the analysis spatially — temporal EEG structures of the healthy and the sick brain
Some aspects of application of Karunen-Loev expansion for the analysis of existential EEG signals in a condition of quiet wakefulness and during mental test (the inverse account in mind) at healthy examinees and at patients with schizophrenia are considered. The possibility of a pathological mental condition of patient’s preliminary diagnostics by results of Karunen-Loev expansion in beforehand chosen EEG frequency ranges are shown.
Keywords: qEEG methods, nonlinear EEG analysis, Karunen-Loev expansion, computer EEG analysis at healthy and sick of schizophrenia, qEEG system NeuroResearcher 2003
Heart rate variability and stability are the most important characteristics of the cardiovascular system
The purpose of the work is examining the stability of cardiovascular system of sportsmen, healthy people, ischemic disease and myocardial infarction patients by using heart rate variability data. 137 people have been examined in rest, during their physical activity and after being operated. The decrease of the heart rate variability parameters SDNN, MxdMn and HF shows the transition from normality to pathology. The decrease of the sensibility of the heart rate variability depending on physical activity and after having been operated on the coronary artery bypass grafting shows the loss of stability by eyesight. The depression of the heart rate with the sympato-adrenal dominant is the marker of the unfavorable issue after the coronary artery bypass grafting. The deterioration of the regulator qualities leads to the loss of the cardiovascular system's stability during physical activity. The violation's degree of parameters of the heart rate variability is influenced by the degree of progress of pathologic process.
Key words: heart rate variability (HRV), cardiovascular system, stability.
P. Garkaviy, M. Yabluchansky, A. Martynenko
Sexual peculiarities of heart rate variability indices reaction in healthy volunteers during the transition processes
The dependence of heart rate variability (HRV) indices changes was studied during transition processes from clinostasis to orthostasis in healthy volunteers using technology of nonlinearity parameters analysis. 20 volunteers with median age 20±1,3 year were investigated. Among the HRV parameters we estimated the total power (ÒÐ), and its components in the domains of very low frequency (VLF), low frequencies (LF), high frequencies (HF) and LF/HF ratio. The investigation was based on the method of integral approximation that was implemented on the computer electric cardiograph CardioLab+ (KhÀI-medica). Patients were divided into two groups depending on sex. The data was processed with parametric and nonparametric statistics methods. The results showed that in the clinostasis ÒÐ, VLF and HF are higher in males, LF/HF ratio is lower, and LF meanings are comparable with these in females. The dispersion of all parameters is higher in males. During the transition process ÒÐ, VLF and LF are increasing in both sexes and HF is decreasing. The degree of the last parameter decrease is higher in males, and its dispersion is markedly lower than in females. LF/HF and its dispersion in males is increasing in a greater extent than in females. In the orthostasis ÒÐ, VLF, LF, HF are decreasing in both sexes. ÒÐ dispersion and LF is higher in males and VLF and HF dispersion are comparable in both sexes. LF/HF and its dispersion increases more drastically in males than in females. The most meaningful differences in HRV parameters between males and females are found during the transition processes, this indicates on the importance of their targeted analysis.
Key words: HRV, transition process, sexual peculiarities of reaction.
V. I. Shulgin, A. V. Morozov, E. V. Volosyuk
Blind source separation technology application to biomedical signal processing
The traditional methods of the time, spectral and space-time signal processing can be used for the signals extraction from their mixture only in the case when the information about the time and spectral characteristics or the mixing law are available. In the case of absence of such information or its negligibility and similarity of the time and spectral characteristics of mixed signals, the «blind source separation» problem is appear. Its solution is based on statistical independence of separated signals. In this work the some problems of biomedical signal processing where the «blind source separation» method can be effectively used, and fundamentals of Bayesian approach to solving such problem are discussed.
Key words: Blind Source Separation, BSS, independent component analysis, ICA, Bayesian approach, statistical independence, electroencephalography, electrocardiography, fetal cardiography.
Alexander M. Akhmetshin Lyudmila G. Akhmetshina
Low contrast radiological image segmentation by means of space-resonance imaging method
A new method of radiological image analysis is outlined. The one has high sensitivity to detection of low contrast pathological areas and high stability to influence of anatomical noise. The essence of method is comparing to each pixel of analyzed image some virtual digital filter. Coefficients of the one are brightness of analyzed image. Information features for further analysis are magnitude and frequency extremal points of magnitude–frequency and group–delay characteristics of that filter. Presented experimental results on examples of X—ray CT and mammogram images analysis had shown high information possibilities of the new method in situation when known methods using did not any give positive results.
Key words: radiological image processing, space resonance, low contrast, segmentation, sensitivity, phase characteristic.
L. Vasilyev, E. Radzishevska, Y. Vikman, O. Gladkova, V. Gertman
Usage of modern technologies for analysis of catamnesis data in patients with breast cancer
In work the results of investigations on data arrays of the formalized medical information with usage of modern information technologies are presented. The arrays formed with the help of a specially designed program complex permitting to store the information of any kind and volume and to select from subarrays of any structure, suitable for further processing in standard software. As a data array the data of a catamnesis of the patients with breast cancer of I-II stages were considered. Usage of Data Mining technology has allowed revealing the parameters having information value for forming of disease prognosis. Such parameters are mass index and side of lesion. For substantiation of the hypothesis the traditional methods of statistics were used.
Key words: breast cancer, Data Mining technology, informative parameters.
E. Ya. Grechanina, Ju. B. Grechanina, I. V. Novikova, A. V. Hristich, T. M. Tkachova
Computer diagnostic systems in practice of genetic consultation
In article «Computer diagnostic systems in practice of genetic consultation» are submitted results of use of modern computer technologies in genetic practice. It is specified, that their application raises accuracy of revealing of a chromosomal pathology in cytogenetics; allows revealing pathological metabolites with using of modern biochemical method of diagnostics — high performance liquid chromatography.
Keywords: cytogenetic, chromosomal complement, kariotype, chromatographic methods, high performance liquid chromatography.
V. Z. Sviridiuk, U. J. Guminsky, A. V. Olynitshenko, S. V. Stepanova, V. J. Shatylo
Using of modern computer technologies, anthropometry and organometry in practice of the family doctor
In work, on an example of calculation of an index of weight of a body and differential diagnostics of various types of obesity, the advantages of use of modern computer technologies are shown at processing of dates of anthropometry with the help of the program Excel in practice of the family doctor. The advantages of computer technologies are emphasized at processing the large files of organometry of the man in norm and pathology received with the help of modern tool-hardware ways of visualization and definition of the sizes internal bodies, such as: magnetic-resonant tomography, computer tomography, angiography, ultrasonography etc.
Keywords: anthropometry, organometry, computer technologies in medicine, family medicine.
B. A. Kobrinskiy
Information technologies for monitoring of population health condition
Practical realization of system of monitoring behind the various groups of the population requiring for the constant control over a condition of health, and separate age contingents is impossible without use of the specialized registers / information systems. In article the various systems providing a full work cycle of gathering, transfer and the analysis of the data are submitted. Questions of confientiality and the authorized access to personal datas are considered.
Keywords: information technologies, information systems, specialized registers, protection of the data, uniform information space.
Information Problems in the Medical Education
Problems of information evolution in education with allocation of few primary goals are considered: structuring of the medical knowledge, implementation of the educational standards, creation of pedagogical expert systems and monitoring systems of knowledge. Criteria of system of an estimation of professional training quality are studied: a level of knowledge trained, skills of independent work and skill to put into practice knowledge. It is shown, that educational process as the complete and complex multifactor system may is successful be carried out only at reliable and constant diagnostics of a knowledge level trained with the feedback integrated in this process.
Keywords: distant education, information decentralization of education, quality assessment in the professional training, pedagogical expert systems.
Izet Masic (1), Ahmed Novo (1), Zlatan Masic (2)
Learning from the distance in medical education at university of Sarajevo
Distance learning or learning from the distance represents the educational technique which occupies significant place in the actual medical education of the health care professionals abroad, especially in postgraduate and continuous medical education. With two projects in this area Possibilities of introduction of Distance Learning in Medical Curriculum and Introduction and Implementation of Distance Learning in Medicine, the Cathedras for Medical Informatics, Medical faculty, University of Sarajevo and Tuzla have made tremendous progress in education of undergraduate students and medical professional in Bosnia and Herzegovina. Also, this paper gives recommendation for sustainable Distance Learning and really lifelong educational process.
Key words: education, medical Informatics, distance learning.
Consciousness and memory from medical informatics point of view, genesis of the «paranormal phenomena»
In the article presents modern data about mechanisms of acquiring, preserving and processing of memory elements in the animal and vegetable world. Human onto- and phylogenetic means of memory storing and areas of its intellectual processing are determined. The author explains as well some paranormal phenomena in the terms of medical information science.
Key words: consciousness, memory, paranormal phenomena, genesis, medical information.