Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596431
Andreas E. Gygi, G. Moschytz
Many publications and articles describe the electrical properties of muscular tissue. In these articles the terms "low pass filter" and "purely resistive medium" often occur in parallel. From the viewpoint of electrical engineering (namely from a network theoretic viewpoint) one would not expect that a purely resistive medium behaves as a low pass filter. Instead the existence of some capacitive and/or inductive elements would be expected. We present a network theoretic description of the low pass filter effect of muscular tissue. We use a descretized and simplified tissue model, e.g. a network of resistors. For this model the low pass characteristic of muscular tissue will be verified. The fundamental reason for the low pass characteristic of muscular tissue is the fact that electrical activity travels with some constant velocity along a given path (e.g. the muscle fibres) while the measurement of this activity is done at some fixed point. The independant variables "time" and "space" can be mapped onto each other. The low pass filter effect occurs in space domain.
{"title":"Low-pass filter effect in the measurement of surface EMG","authors":"Andreas E. Gygi, G. Moschytz","doi":"10.1109/CBMS.1997.596431","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596431","url":null,"abstract":"Many publications and articles describe the electrical properties of muscular tissue. In these articles the terms \"low pass filter\" and \"purely resistive medium\" often occur in parallel. From the viewpoint of electrical engineering (namely from a network theoretic viewpoint) one would not expect that a purely resistive medium behaves as a low pass filter. Instead the existence of some capacitive and/or inductive elements would be expected. We present a network theoretic description of the low pass filter effect of muscular tissue. We use a descretized and simplified tissue model, e.g. a network of resistors. For this model the low pass characteristic of muscular tissue will be verified. The fundamental reason for the low pass characteristic of muscular tissue is the fact that electrical activity travels with some constant velocity along a given path (e.g. the muscle fibres) while the measurement of this activity is done at some fixed point. The independant variables \"time\" and \"space\" can be mapped onto each other. The low pass filter effect occurs in space domain.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116159834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596437
J. Rugelj, V. Svigelj
Medicine is heavily dependent on computer supported systems that have become integral to the diagnosis and treatment of the disease. At the same time, the need for all kinds of collaboration grows. New technologies promise the ability for teams and individuals to conduct collaborative work using teleinformatics resources through electronic interaction in virtual distributed laboratory spaces called also collaboratory. A collaboratory is designed to enable close ties between the collaborating partners, to accelerate the development and dissemination of basic knowledge, and to minimize the time lag between diagnosis and corresponding treatment. The paper presents the architecture of our collaboratory and some basic teleinformatics tools for the support of collaboration which were selected in the preparatory phase of the project.
{"title":"Computer supported multimedia environment for the support of long-distance collaboration in medicine","authors":"J. Rugelj, V. Svigelj","doi":"10.1109/CBMS.1997.596437","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596437","url":null,"abstract":"Medicine is heavily dependent on computer supported systems that have become integral to the diagnosis and treatment of the disease. At the same time, the need for all kinds of collaboration grows. New technologies promise the ability for teams and individuals to conduct collaborative work using teleinformatics resources through electronic interaction in virtual distributed laboratory spaces called also collaboratory. A collaboratory is designed to enable close ties between the collaborating partners, to accelerate the development and dissemination of basic knowledge, and to minimize the time lag between diagnosis and corresponding treatment. The paper presents the architecture of our collaboratory and some basic teleinformatics tools for the support of collaboration which were selected in the preparatory phase of the project.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123801430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596429
C. Busch
The paper considers the computer-based support for the localization of pathological tissue within tomographic data. The subject of the approach is the inter-patient analysis of brain tissue types such as tumor, CSF, white matter, grey matter, bone, fat tissue and background. The class tumor hereby represents the superset of pathological tissue. The analysis pipeline of the presented approach contains feature extraction, classification, two-step texture analysis and morphological postprocessing. Furthermore the paper reports results that have been reached on the different steps of the pipeline.
{"title":"Inter-patient analysis of tomographic data","authors":"C. Busch","doi":"10.1109/CBMS.1997.596429","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596429","url":null,"abstract":"The paper considers the computer-based support for the localization of pathological tissue within tomographic data. The subject of the approach is the inter-patient analysis of brain tissue types such as tumor, CSF, white matter, grey matter, bone, fat tissue and background. The class tumor hereby represents the superset of pathological tissue. The analysis pipeline of the presented approach contains feature extraction, classification, two-step texture analysis and morphological postprocessing. Furthermore the paper reports results that have been reached on the different steps of the pipeline.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117196028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596414
A. Marsh
The organisation of information is critical in a society of the future, especially concerning healthcare. The introduction of a new standard called "Virtual Medical Worlds" (VMW) provides the potential to organise existing medical information and provide the foundations for its integration into future forms of medical data. If is foreseen that the World Wide Web will become the most important communication medium of any future information society. VMW, devised by the EUROMED Project, is therefore based on the combination of the use of the WWW and all its well-defined tools, and the newly emerging medical imaging standard DICOM 3.0, VMW utilises the WWW as a navigational medium to remotely access medical information and explicitly DICOM 3.0 medical images. Physical locations of medical information are abstracted, presenting the practitioner with a user-friendly 3D graphical interface based on medical models. The first version of VMW, referred to as VMW 10.0, is an attempt to define an information infrastructure in an emerging telemedical information society.
{"title":"EUROMED-the creation of a telemedical information society","authors":"A. Marsh","doi":"10.1109/CBMS.1997.596414","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596414","url":null,"abstract":"The organisation of information is critical in a society of the future, especially concerning healthcare. The introduction of a new standard called \"Virtual Medical Worlds\" (VMW) provides the potential to organise existing medical information and provide the foundations for its integration into future forms of medical data. If is foreseen that the World Wide Web will become the most important communication medium of any future information society. VMW, devised by the EUROMED Project, is therefore based on the combination of the use of the WWW and all its well-defined tools, and the newly emerging medical imaging standard DICOM 3.0, VMW utilises the WWW as a navigational medium to remotely access medical information and explicitly DICOM 3.0 medical images. Physical locations of medical information are abstracted, presenting the practitioner with a user-friendly 3D graphical interface based on medical models. The first version of VMW, referred to as VMW 10.0, is an attempt to define an information infrastructure in an emerging telemedical information society.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128606106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596432
B. Zupan, D. Stokic, M. Bohanec, M. Priebe, A. Sherwood
Spasticity following spinal cord injury (SCI) is most often assessed clinically using a five point Ashworth Score (AS). A more objective assessment of altered motor control may be achieved by using a comprehensive protocol based on a surface electromyographic (sEMG) activity recorded from thigh and leg muscles. However, the relation between clinical and neurophysiological assessments is still unknown. We employ three different classification methods to investigate this relationship. The experimental results indicate that if the appropriate set of sEMG features is used, the neurophysiological assessment is related to clinical findings and can be used to predict the AS. A comprehensive and objective sEMG assessment may be proven useful for the assessment of interventions and follow up of SCI patients.
{"title":"Relating clinical and neurophysiological assessment of spasticity by machine learning","authors":"B. Zupan, D. Stokic, M. Bohanec, M. Priebe, A. Sherwood","doi":"10.1109/CBMS.1997.596432","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596432","url":null,"abstract":"Spasticity following spinal cord injury (SCI) is most often assessed clinically using a five point Ashworth Score (AS). A more objective assessment of altered motor control may be achieved by using a comprehensive protocol based on a surface electromyographic (sEMG) activity recorded from thigh and leg muscles. However, the relation between clinical and neurophysiological assessments is still unknown. We employ three different classification methods to investigate this relationship. The experimental results indicate that if the appropriate set of sEMG features is used, the neurophysiological assessment is related to clinical findings and can be used to predict the AS. A comprehensive and objective sEMG assessment may be proven useful for the assessment of interventions and follow up of SCI patients.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127627704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596433
I. Zelic, I. Kononenko, N. Lavrač, Vanja Vuga
Machine learning techniques can be used to extract knowledge from data stored in medical databases. In our application, various machine learning algorithms were used to extract diagnostic knowledge to support decisions in the diagnosis of sport injuries.
{"title":"Diagnosis of sport injuries with machine learning: explanation of induced decisions","authors":"I. Zelic, I. Kononenko, N. Lavrač, Vanja Vuga","doi":"10.1109/CBMS.1997.596433","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596433","url":null,"abstract":"Machine learning techniques can be used to extract knowledge from data stored in medical databases. In our application, various machine learning algorithms were used to extract diagnostic knowledge to support decisions in the diagnosis of sport injuries.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"204 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114210904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596413
V. Avbelj, R. Trobec, B. Geršak, D. Vokac
Multichannel ECG is an important instrumentation for experimental and clinical electrophysiology. Both the software and the front-end design issues are described for a 128 channel system which can record the signals up to 100 seconds. The basic analysis and presentation of the acquired ECG signals are also given with examples of body surface potential maps. Thanks to the frequency response of the front-end down to 0.05 Hz, the system can show high resolution isointegral maps of ST segment shift. The system is modular and can be modified for different number of channels, sample-rate, bandwidth and quantization resolution.
{"title":"Multichannel ECG measurement system","authors":"V. Avbelj, R. Trobec, B. Geršak, D. Vokac","doi":"10.1109/CBMS.1997.596413","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596413","url":null,"abstract":"Multichannel ECG is an important instrumentation for experimental and clinical electrophysiology. Both the software and the front-end design issues are described for a 128 channel system which can record the signals up to 100 seconds. The basic analysis and presentation of the acquired ECG signals are also given with examples of body surface potential maps. Thanks to the frequency response of the front-end down to 0.05 Hz, the system can show high resolution isointegral maps of ST segment shift. The system is modular and can be modified for different number of channels, sample-rate, bandwidth and quantization resolution.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114770516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596416
A. Tchounikine, Y. Amghar, A. Flory
This article originates from the need to introduce semantic aspects in the retrieval procedures in medical information systems. Our working database records documents which gathers various type of information: medical images (X-rays, MRI, tomography, etc.), data on the patient's civil and clinical identity, and examination reports. A retrieval process should answer queries involving both explicit alphanumeric data from the document and information that is carried by the images. We propose a data model that allows content-based retrieval for the images. The image is viewed as pairs of iso-semantic regions and signals in respect of an anatomical and a pathological model. A graphical interface is also provided for the users to index the images and formulate their queries.
{"title":"Semantic interrogation for a radiological documentary record","authors":"A. Tchounikine, Y. Amghar, A. Flory","doi":"10.1109/CBMS.1997.596416","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596416","url":null,"abstract":"This article originates from the need to introduce semantic aspects in the retrieval procedures in medical information systems. Our working database records documents which gathers various type of information: medical images (X-rays, MRI, tomography, etc.), data on the patient's civil and clinical identity, and examination reports. A retrieval process should answer queries involving both explicit alphanumeric data from the document and information that is carried by the images. We propose a data model that allows content-based retrieval for the images. The image is viewed as pairs of iso-semantic regions and signals in respect of an anatomical and a pathological model. A graphical interface is also provided for the users to index the images and formulate their queries.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121037696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596441
I. Lacković, V. Bilas, A. Santic
Measurement of vertical force in gait assessment of injured persons is a method for objective control of the recovery rate during the rehabilitation process. We describe our computer based system for continuous monitoring and analysis of vertical forces. The system uses the original multisegmented capacitive transducers for force measurement and originally developed software CAS for real-time monitoring and post-processing. The software performance and some methods of vertical force signal processing in time and frequency domain are discussed. The feasibility of the system for further clinical use is proved.
{"title":"A computer based vertical force monitoring and analysis system for gait evaluation","authors":"I. Lacković, V. Bilas, A. Santic","doi":"10.1109/CBMS.1997.596441","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596441","url":null,"abstract":"Measurement of vertical force in gait assessment of injured persons is a method for objective control of the recovery rate during the rehabilitation process. We describe our computer based system for continuous monitoring and analysis of vertical forces. The system uses the original multisegmented capacitive transducers for force measurement and originally developed software CAS for real-time monitoring and post-processing. The software performance and some methods of vertical force signal processing in time and frequency domain are discussed. The feasibility of the system for further clinical use is proved.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129725949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1997-03-11DOI: 10.1109/CBMS.1997.596415
G. Panagopoulou, S. Sirmakessis, A. Tsakalidis, Giannis Tzimas
In this paper, we present the functional design and the technical specifications of a complete blood-transfusion information system, named the PELICAN system. This system is now under development in the University of Patras in co-operation with the Blood Centre of the University Hospital in Patras. We describe the main aspects of its architecture and the basic functionalities of the system.
{"title":"A computer based solution for blood transfusion centres; the case study of Greece","authors":"G. Panagopoulou, S. Sirmakessis, A. Tsakalidis, Giannis Tzimas","doi":"10.1109/CBMS.1997.596415","DOIUrl":"https://doi.org/10.1109/CBMS.1997.596415","url":null,"abstract":"In this paper, we present the functional design and the technical specifications of a complete blood-transfusion information system, named the PELICAN system. This system is now under development in the University of Patras in co-operation with the Blood Centre of the University Hospital in Patras. We describe the main aspects of its architecture and the basic functionalities of the system.","PeriodicalId":292377,"journal":{"name":"Proceedings of Computer Based Medical Systems","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117017912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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