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Computers in Cardiology, 2005最新文献

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Remote transmission and analysis of signals from wearable devices in sleep disorders evaluation 睡眠障碍评估中可穿戴设备信号的远程传输与分析
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588031
S. Puzzuoli, P. Marcheschi, A. Bianchi, M. García, D. De Rossi, L. Landini
{"title":"Remote transmission and analysis of signals from wearable devices in sleep disorders evaluation","authors":"S. Puzzuoli, P. Marcheschi, A. Bianchi, M. García, D. De Rossi, L. Landini","doi":"10.1109/CIC.2005.1588031","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588031","url":null,"abstract":"The aim of this work is to propose a new approach to traditional sleep monitoring, in order to simplify the acquisition and the managing of the signals and to reduce the patient's discomfort during data acquisition. Signals are collected by a sensorized garment and transmitted to a central elaboration station. The results of the elaboration are made available to the sleep specialist through a Web services organized Internet portal. The sleep specialist is able to review the data, to write and store in a database a diagnosis and to suggest a treatment for the patient. The employment of a sensorized garment drops down costs for installation and maintenance of a dedicated sleep monitoring center. Moreover, the Internet-based system proposed simplifies and speeds-up the retrieving and consulting of historical evidences","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115569533","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: 14
Hardware accelerated watershed based echocardiographic image segmentation 硬件加速分水岭超声心动图图像分割
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588224
D. Drop, Z. Latala, J. Kasperek, R. Patury, P. Rajda, J. Sadowski, L. Szydlowski, L. Wojnar
{"title":"Hardware accelerated watershed based echocardiographic image segmentation","authors":"D. Drop, Z. Latala, J. Kasperek, R. Patury, P. Rajda, J. Sadowski, L. Szydlowski, L. Wojnar","doi":"10.1109/CIC.2005.1588224","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588224","url":null,"abstract":"The proposed poster presents a hardware accelerated left ventricle detection algorithm. Based on marker controlled watershed segmentation method, the algorithm core works sequentially: detection result from a given frame is taken as the segmentation marker to process the next frame. The complete algorithm is written in Matlab. It performs more then 20 elementary operations and needs tens of minutes to compute one movie. As this is a serious disadvantage in clinical application, hardware acceleration has been proposed. Authors built an experimental PC based system equipped with data translation frame-grabber and Alpha-Data ADM-XRC-II board with high capacity Virtex II field programmable gate array. Hardware implementation of particular algorithm stages shows significant speedup due to the possibility of computation concurrency in FPGA Virtex II device","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116530236","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
An ischemia detector based on wavelet analysis of electrocardiogram st segments 基于心电st段小波分析的缺血检测器
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588242
F. Sales, S. Jayanthi, S. Furuie, R. Galvão
{"title":"An ischemia detector based on wavelet analysis of electrocardiogram st segments","authors":"F. Sales, S. Jayanthi, S. Furuie, R. Galvão","doi":"10.1109/CIC.2005.1588242","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588242","url":null,"abstract":"This paper analyses a strategy for ischemia detection-based on wavelet decomposition of the ST segment. The wavelet transform is used as a pre-processing tool for linear discriminant classifier. In order to minimize generalization problems caused by correlations between the classification variables, a selection algorithm is employed to choose a subset of wavelet coefficients with appropriate discriminability and small collinearity. When applied to a set with small morphologic variability, good results are obtained: 98.5% of accuracy and a ROC area equal to 0.98 . However, when the training set has a high within-class scatter, the discriminant model yields poor results","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122366276","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
Robust level set for heart cavities detection in ultrasound images 超声图像中心脏腔检测的鲁棒水平集
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588080
M. Mora, C. Tauber, H. Batatia
{"title":"Robust level set for heart cavities detection in ultrasound images","authors":"M. Mora, C. Tauber, H. Batatia","doi":"10.1109/CIC.2005.1588080","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588080","url":null,"abstract":"The class of geometric deformable models, also known as level sets, has brought tremendous impact on medical imagery due to its capability of topology preservation and fast shape recovery. Ultrasonic heart images are often characterized by high level of speckle noise causing erroneous detection of cavities. We propose a new stopping term for computing level sets in order to robustly detect the heart cavities in echocardiographic images. Robustness is ensured by the use of the coefficient of variation. Experimental results show significant improvement, especially for images acquired with low frequencies","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129864103","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: 24
GO-kard: an integrated documentation system for cardiology GO-kard:心脏病学综合文档系统
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588130
M. Claus, K. Kronberg, M. Eichelberg
{"title":"GO-kard: an integrated documentation system for cardiology","authors":"M. Claus, K. Kronberg, M. Eichelberg","doi":"10.1109/CIC.2005.1588130","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588130","url":null,"abstract":"The development of information systems for clinical departments takes a long time, during which the changing requirements from the medical staff lead to a natural growth of the system. Over time, new technologies come and go, leaving their traces in the system architecture. At some point, the system architect needs to think over the whole concept, design a completely new architecture with the most modern technology and re-implement the system as needed. Looking back at more than 15 years of experience in developing software for a clinical cardiology department (exemplarity GO-Kard), this article discusses the rationale of a radical change in the development of a departmental information system and gives a brief explanation of why the time and effort invested in the a new development framework pays off in the long term","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646196","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
Telemedicine: the determination of fatal cardiovascular risk in internet users population 远程医疗:互联网用户人群致命心血管风险的测定
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588113
B. Trzeciak, J. Siebert, J. Scislo, M. Jaśkiewicz, Z. Babińska
{"title":"Telemedicine: the determination of fatal cardiovascular risk in internet users population","authors":"B. Trzeciak, J. Siebert, J. Scislo, M. Jaśkiewicz, Z. Babińska","doi":"10.1109/CIC.2005.1588113","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588113","url":null,"abstract":"This paper presents the assessment of fatal cardiovascular risk over a 10-year period and thereby popularising the European Guidelines on Cardiovascular Disease. The \"Ryzyko\" program is based on the algorithm publicated in the EurHJ (2003) 24, 987-1003. The program is available on www.ryzyko.amg.gda.pI. After entering personal data, each user is given an outcome and automatically generated recommendations, which involve changes in lifestyle and modification of risk factors or to contact a doctor. All the data and the results obtained are being collected on a server. Number of visits to the website -17,301. Percentage of visits with complete data -62%. Internet users who were advised to contact their doctor -80.7%. It is concluded that the program presented here functions well as an educational and screening system for cardiovascular disease","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129028268","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
MOLEC: anywhere and at any time arrhythmia classification MOLEC:随时随地心律失常分类
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588174
J. Rodriguez, A. Goñi, L. Dranca, A. Burgos, A. Illarramendi
{"title":"MOLEC: anywhere and at any time arrhythmia classification","authors":"J. Rodriguez, A. Goñi, L. Dranca, A. Burgos, A. Illarramendi","doi":"10.1109/CIC.2005.1588174","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588174","url":null,"abstract":"The new advances in sensor technology, PDAs and wireless communications favor the development of a new type of monitoring systems that can provide patients with assistance anywhere and at any time. Of particular interest are the monitoring systems designed for people that suffer from heart arrhythmias, due to the increasing number of people with cardiovascular diseases. In this paper, we present MOLEC: a PDA-based system that performs local real-time classification and detects the ECG anomalies in situ. In the actual implementation of MOLEC, the signal is acquired by some ECG sensors (ActiveECG sensors) with a 360 Hz frequency. For the preprocessing of the signal the ECGPUWAVE tool and an automata developed by us that identifies the beats are used. We have also developed a beat and rhythm classifiers that determine if there has been an anomalous rhythm, and in that case, an alarm is sent to a hospital via wireless communications. The rhythm detection delay of the MOLEC system is of 6.66 seconds","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123537125","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
Normal ECG limits for Asian infants and children 亚洲婴儿和儿童的正常心电图限制
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588135
K. Sun, F. Li, Y. Zhou, A. Dubin, P. Rautaharju, J. Liebman, R. Gregg, E. Helfenbein, J. Lindauer, S.H. Zhou
{"title":"Normal ECG limits for Asian infants and children","authors":"K. Sun, F. Li, Y. Zhou, A. Dubin, P. Rautaharju, J. Liebman, R. Gregg, E. Helfenbein, J. Lindauer, S.H. Zhou","doi":"10.1109/CIC.2005.1588135","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588135","url":null,"abstract":"Normal ECG limits are age-dependent, particularly in infants and children, and diagnostic ECG criteria are dependent on the availability of normal limits. As part of an ongoing study, we have evaluated selected ECG amplitudes and time intervals in a cohort of 1,166 healthy Chinese infants and children from Shanghai, China. We observe notable increases of QRS and QT intervals with age, a notable trend toward decreased R and increased S amplitudes in V2, and that T wave transition occurs at age 12 and that it occurs slightly earlier for males. We observe no notable gender differences in ECG parameters at age less than 12 years old, but that evolution differences begin to be manifested after age 8 years. The normal ECG limits in Asian infants and children are also compared with available data from North American infants and children","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121421418","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: 10
CPR artefact removal from VF signals by means of an adaptive kalman filter using the chest compression frequency as reference signal 采用自适应卡尔曼滤波方法，以胸部按压频率为参考信号，从VF信号中去除心肺复苏术伪影
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588064
S. de Gauna, J. Ruiz, U. Irusta, E. Aramendi, A. Lazkano, J. Gutierrez
{"title":"CPR artefact removal from VF signals by means of an adaptive kalman filter using the chest compression frequency as reference signal","authors":"S. de Gauna, J. Ruiz, U. Irusta, E. Aramendi, A. Lazkano, J. Gutierrez","doi":"10.1109/CIC.2005.1588064","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588064","url":null,"abstract":"Chest compressions during Cardiopulmonary Resuscitation (CPR) generate important artefacts which impede the correct analysis of the ECG signal by an automated external defibrillator (AED). The suppression of the CPR artefact is thus necessary during resuscitation. The filtering technique proposed in the present paper is based on a Kalman adaptive scheme where the CPR artefact model follows the instantaneous frequency of the chest compressions, while the VF signal is modeled as a sum of two sinusoidal signals. The good results obtained for the increase of the signal to noise ratio and the excellent sensitivity scores provided by a commercial AED on the cleaned VF signals certifies the value of the method","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121490606","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
Cellular modeling and simulation of brugada syndrome brugada综合征的细胞建模与模拟
Computers in Cardiology, 2005 Pub Date : 1900-01-01 DOI: 10.1109/CIC.2005.1588279
L. Xia, Y. Zhang, X.H. Lu
{"title":"Cellular modeling and simulation of brugada syndrome","authors":"L. Xia, Y. Zhang, X.H. Lu","doi":"10.1109/CIC.2005.1588279","DOIUrl":"https://doi.org/10.1109/CIC.2005.1588279","url":null,"abstract":"A mathematical model of the action potential (AP) of human ventricular cell is constructed and used in simulation studies of Brugada syndrome. The model is based on Luo-Rudy model, and refined by recent experimental data on major ionic currents, and the formulations of ten Tusscher et al are also introduced into our model. The results show that the endocardial and midmyocardial cells AP have little changes in Brugada syndrome compared with that of normal heart, but the epicardial cell AP changes obviously. We also investigate the temperature dependent and heart rate dependent Brugada syndrome. The results show that when the body temperature increases to 39.5degC or the cardiac length is larger than 1000 ms, the Brugada syndrome epicardial cell APs may appear suddenly change, which is very likely to induce sudden death. The result may explain why some Brugada syndrome patients easily to die suddenly during a febrile state or during the night when they are sleeping. These results are in good accordance with the experiment findings reported in the literatures","PeriodicalId":239491,"journal":{"name":"Computers in Cardiology, 2005","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126245012","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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