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[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems最新文献

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An integrated medical workstation with a multimodal user interface, knowledge-based user support, and multimedia documents 具有多模态用户界面、基于知识的用户支持和多媒体文档的集成医疗工作站
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109435
K. Kuhn, W. Doster, D. Roesner, Peter Kottmann, W. Swobodnik, Hans Ditschuneit
{"title":"An integrated medical workstation with a multimodal user interface, knowledge-based user support, and multimedia documents","authors":"K. Kuhn, W. Doster, D. Roesner, Peter Kottmann, W. Swobodnik, Hans Ditschuneit","doi":"10.1109/CBMSYS.1990.109435","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109435","url":null,"abstract":"An integrated workstation developed for use in clinical medicine is described. The specific application domain is gastroenterology with endoscopic, ultrasonic, and laboratory units. The following modules for data collection and management during ultrasound examinations have been implemented and tested: a multimodal user interface with speech and symbol recognition to reduce complexity in human-machine interaction, knowledge-based components to support the user and to structure dialogues dynamically, and techniques for handling multimedia documents that consist of images, text, structured text, graphics, and digitized speech. The system was implemented using networked frontend and backend workstations under UNIX.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765046","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}
引用次数: 11
New method for electrogastrographic analysis 胃电图分析的新方法
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109426
S. Haddab, M. Bouchoucha, P. Cugnenc, J. Barbier
{"title":"New method for electrogastrographic analysis","authors":"S. Haddab, M. Bouchoucha, P. Cugnenc, J. Barbier","doi":"10.1109/CBMSYS.1990.109426","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109426","url":null,"abstract":"The use of electrogastrography performed with cutaneous pre-gelled electrodes located in the region above the stomach to record electric control activity is discussed. A real-time spectrum analysis is used to provide a graphic representation of this activity. This study provides a method for the automatic determination of the gastric activity independently of the relative position of the stomach and the electrodes. The proposed method amplifies regular noise such as respiration. An adaptive filter is needed to suppress this noise and improve the quality of the recording.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117329250","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}
引用次数: 3
Frequency modulated pulse for ultrasonic imaging in an attenuating medium 在衰减介质中用于超声成像的调频脉冲
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109383
N. Rao
{"title":"Frequency modulated pulse for ultrasonic imaging in an attenuating medium","authors":"N. Rao","doi":"10.1109/CBMSYS.1990.109383","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109383","url":null,"abstract":"It is argued that the probability that ultrasound used at the intensities employed clinically will cause bioeffects characteristic of transient cavitation is immensely greater above a threshold peak intensity of the interrogating ultrasound pulse. Simulations and experiments in nonattenuating media show that a factor of 16 to 50 reduction in peak intensity is possible without sacrificing the signal primarily used for imaging, or the resolution. This factor depends on the effective time-bandwidth product of the frequency modulated pulse. However, in a frequency-dependent attenuating medium, such as soft tissue, this advantage could diminish. A linear-frequency and linear-phase model for attenuation was incorporated in the simulation process. The time-bandwidth product was evaluated for reflectors at various depths and as a function of the center frequency and bandwidth of the frequency-modulated pulse.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133692536","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}
引用次数: 11
The WIC Advisor: a case study in medical expert system development WIC顾问:医学专家系统开发的案例研究
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109416
E.J. Mattson, M. M. Thomas, S.A. Trenz, S.B. Cousins
{"title":"The WIC Advisor: a case study in medical expert system development","authors":"E.J. Mattson, M. M. Thomas, S.A. Trenz, S.B. Cousins","doi":"10.1109/CBMSYS.1990.109416","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109416","url":null,"abstract":"A case study of expert system development with untrained experts over a short period of time is discussed. The development of a working medical screening and diagnosis expert system for use at the Women, Infants, and Children (WIC) clinics in Madison County, IL is described. The system was designed and implemented over a period of four months. A large number of knowledge acquisition techniques were used, some of them customized in ways that greatly increased their effectiveness. This work explores the development of the WIC Advisor, from problem definition through expert system delivery. Important factors in the success of this expert system were the selection of a limited diagnostic domain, and the choice of multiple experts. The major benefits of the system include assisting clients between clinic visits, cataloging basic medical data, and providing consistent and verifiable information.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127588461","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}
引用次数: 1
Two algorithms for correcting phase aberration in a computer-controlled ultrasonic imaging system 计算机控制超声成像系统中相位像差校正的两种算法
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109376
Danhua Zhao, G. Trahey
{"title":"Two algorithms for correcting phase aberration in a computer-controlled ultrasonic imaging system","authors":"Danhua Zhao, G. Trahey","doi":"10.1109/CBMSYS.1990.109376","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109376","url":null,"abstract":"Spatial inhomogeneities in the acoustic velocity of tissues degrade the performance of medical ultrasonic imaging systems. Two algorithms which can correct the phase aberration induced by the inhomogeneities are presented. The first algorithm adjusts the phases of signals transmitted and received from individual channels in a phased array scanner, one group of adjacent elements at a time. The second algorithm is based on the assumption that a phases error profile can be approximated by a sum of sine waves and the phase aberration can be corrected by subtracting components of the sum. Comparisons of the two algorithms are presented.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123365392","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}
引用次数: 1
High resolution anthropomorphic phantom for Monte Carlo analysis of internal radiation sources 用于内部辐射源蒙特卡罗分析的高分辨率拟人化幻影
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109445
I. Zubal, G. Gindi, M. Lee, C. R. Harrell, Eileen O. Smith
{"title":"High resolution anthropomorphic phantom for Monte Carlo analysis of internal radiation sources","authors":"I. Zubal, G. Gindi, M. Lee, C. R. Harrell, Eileen O. Smith","doi":"10.1109/CBMSYS.1990.109445","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109445","url":null,"abstract":"A digital voxel phantom which closely resembles a typical male anatomy has been created. Organ outlines were manually drawn with 1-mm resolution in each of 78 transverses of the human torso. Such an anthropomorphic three-dimensional phantom has several interesting applications in the radiological sciences. Monte Carlo simulations can yield diagnostically realistic images of new investigational radiopharmaceuticals. Uptake characteristics approximated from small animal experiments can be used to test the imaging characteristics in human geometries. The resulting images can serve as ideal projection data of known source and attenuator distributions. This can lead to a better understanding of the image formation process for clinically realistic models, and can prove especially interesting in testing and improving tomographic reconstruction algorithms. Dose calculations for internal and external radiation sources using this phantom can give new insights in the field of health physics and therapy.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125021864","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}
引用次数: 31
Effects of high energy radiation on AICDs and programmable pacemakers 高能辐射对aicd和可编程起搏器的影响
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109398
Fabio Rodríguez, F. Filimonov, A. Henning, C. Coughlin, M. Greenberg
{"title":"Effects of high energy radiation on AICDs and programmable pacemakers","authors":"Fabio Rodríguez, F. Filimonov, A. Henning, C. Coughlin, M. Greenberg","doi":"10.1109/CBMSYS.1990.109398","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109398","url":null,"abstract":"The response to ionizing radiation of 23 modern programmable pacemakers and four automatic implantable cardioverter defibrillators (AICSs) using CMOS technology is presented. Proton and electron radiation of various energies and dose levels were used. Eight of the 17 pacemakers exposed to the photon radiation failed before 50 Gy, 4 at doses <17 Gy. Four of the six pacemakers exposed to the direct electron beam failed before 70 Gy. Scatter doses, with the units outside the beam, were well tolerated by this group of pacemakers. Three of the four AICDs exposed to photon radiation, showed a major failure before 55 Gy. The charging and detection times increased with radiation dose.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125026564","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}
引用次数: 4
Neural network performance metrics for biomedical applications 生物医学应用的神经网络性能指标
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109410
R. Eberhart, R. W. Dobbins
{"title":"Neural network performance metrics for biomedical applications","authors":"R. Eberhart, R. W. Dobbins","doi":"10.1109/CBMSYS.1990.109410","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109410","url":null,"abstract":"Neural network performance measurements are discussed. Included are percent correct, average sum-squared error, receiver operating characteristics (ROC) curve measurements, other measurements based on ROC curve parameters, and the chi-square goodness-of-fit metric. The specific measure chosen depends on the type of system and other more loosely defined parameters such as the level of technical sophistication of the system end user.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125104187","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}
引用次数: 8
Interactive visualization of three-dimensional SPECT cardiac images 三维SPECT心脏图像的交互式可视化
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109402
Mark F. Smith, R. Jaszczak, C. Floyd, K. Greer, R. Coleman
{"title":"Interactive visualization of three-dimensional SPECT cardiac images","authors":"Mark F. Smith, R. Jaszczak, C. Floyd, K. Greer, R. Coleman","doi":"10.1109/CBMSYS.1990.109402","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109402","url":null,"abstract":"Various methods for interactively viewing single photon emission computed tomography (SPECT) images of the myocardium and cardiac blood pool have been developed. Standard clinical protocols are used to acquire and reconstruct myocardial perfusion and gated blood pool projection data. The 3-D images are segmented with a thresholding algorithm prior to surface rendering on a Stellar GS1000 graphics supercomputer. Viewing regions of interest from arbitrary perspectives permits a more comprehensive evaluation of myocardial perfusion and cardiac performance. Voxel visualization along interactively chosen slicing planes through a 3-D image has been implemented on both the Stellar and on a Sun 3/280 equipped with a graphics accelerator. This presentation is superior to surface rendering for viewing low-amplitude features such as the right ventricular myocardium. Volume rendering has been implemented on these two computers, but it is not yet fast enough for real-time interactive viewing. Interactive visualization of 3-D SPECT images illustrates the potential for greater exploitation of these images in evaluating cardiac physiology and pathology.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125087612","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}
引用次数: 0
Rheoencephalographic and electroencephalographic analysis of cognitive workload 认知负荷的流变脑和脑电图分析
[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems Pub Date : 1990-06-03 DOI: 10.1109/CBMSYS.1990.109448
L. Montgomery, R. W. Montgomery, W. Gerth, R. Guisado
{"title":"Rheoencephalographic and electroencephalographic analysis of cognitive workload","authors":"L. Montgomery, R. W. Montgomery, W. Gerth, R. Guisado","doi":"10.1109/CBMSYS.1990.109448","DOIUrl":"https://doi.org/10.1109/CBMSYS.1990.109448","url":null,"abstract":"Changes in brain blood flow and neural activity during mental work are investigated. Multichannel rheoencephalography (REG) and topographical electroencephalography (EEG) were used to measure subject responses to three levels of mathematical processing (MP), as administered by a modified version of the WPAFB criterion task set computer program. REG records were analyzed to provide indices of right and left hemisphere hemodynamic changes during MP. The EEG data were mathematically transformed to provide energy density distribution of the scalp electropotential which reflect the metabolic load required to perform each test sequence. The simultaneous use of these REG and EEG procedures may also be used in the study of a variety of disease states, such as brain injury and neurorehabilitation.<<ETX>>","PeriodicalId":365366,"journal":{"name":"[1990] Proceedings. Third Annual IEEE Symposium on Computer-Based Medical Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125302332","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}
引用次数: 2
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