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Advanced Methods and Tools for ECG Data Analysis - Part 5 pdf

Advanced Methods and Tools for ECG Data Analysis - Part 5 pdf

Advanced Methods and Tools for ECG Data Analysis - Part 5 pdf

... Figure 5. 7).P1: ShashiAugust 30, 2006 11 :5 Chan-Horizon Azuaje˙Book 5. 4 Data- Determined Basis Functions 1 65 Figure 5. 12 Ten seconds of data after ICA decomposition (see Figure 5. 11), and reconstructionwith ... pp. 44 51 .P1: ShashiAugust 30, 2006 11 :5 Chan-Horizon Azuaje˙Book 152 Linear Filtering Methods Figure 5. 8 Layout of a D-p-D auto-associative neural network.inputs and outputs; the target data ... PhysiologicalMeasurement,Vol. 26, No. 5, 20 05, pp. R 155 –R199.[6] Dickhaus, H., and H. Heinrich, Analysis of ECG Late Potentials Using Time-Frequency Methods, ” in M. Akay, (ed.), Time Frequency and Wavelets in Biomedical...
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Advanced Methods and Tools for ECG Data Analysis - Part 1 ppt

Advanced Methods and Tools for ECG Data Analysis - Part 1 ppt

... Library.ISBN-10: 1 -5 8 05 3-9 6 6-1 ISBN-13: 97 8-1 -5 8 05 3-9 6 6-1 Cover design by Michael Moretti©2006 ARTECH HOUSE, INC.6 85 Canton StreetNorwood, MA 02062All rights reserved. Printed and bound in ... of Data Libraries 35 2.4 Database Analysis An Example Using WFDB 372 .5 ECG Acquisition Hardware 412 .5. 1 Single-Channel Architecture 412 .5. 2 Isolation and Protection 422 .5. 3 Primary Common-Mode ... Chan-Horizon Azuaje˙Book Advanced Methods and Tools for ECG Data Analysis Gari D. CliffordFrancisco AzuajePatrick E. McSharryEditorsartechhouse.comP1: ShashiAugust 24, 2006 11:32 Chan-Horizon...
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Advanced Methods and Tools for ECG Data Analysis - Part 2 doc

Advanced Methods and Tools for ECG Data Analysis - Part 2 doc

... include:•What are the data going to be used for? •Are the data format and libraries extensible?•Is the data format compact?•Are the libraries open-source?•Do the libraries and format support ... annotations?•Is the format widely accepted (and well tested)?•Can I easily (and verifiably) de-identify my data using this format?•Are the libraries for reading and writing data available for all the ... electroencephalograms (and moreincreasingly is becoming the standard for ECGs); HL7 [26, 27] (an XML-basedformat for the exchange of data in hospitals); and WaveForm DataBase (WFDB),a set of libraries developed...
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Advanced Methods and Tools for ECG Data Analysis - Part 3 docx

Advanced Methods and Tools for ECG Data Analysis - Part 3 docx

... still performed in the Fourier do-main. Other methods for performing spectral estimation from irregularly sampled data do exist and include the min-max interpolation method [ 75] and the well-known ... NREMLFHF-ratio valuesof between 2 and 3 .5 and between 3 .5 and 5. 5 for REM sleep. Vanoli et al. [91]report that myocardial infarction (MI) generally results in a raised overallLFHF-ratioduring ... for the cubic18.Clayton et al. [ 65] have demonstrated that FFT and AR methods can provide a comparable measure of thelow-frequency LF and high-frequency HF metrics on linearly resampled 5- minute...
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Advanced Methods and Tools for ECG Data Analysis - Part 4 ppsx

Advanced Methods and Tools for ECG Data Analysis - Part 4 ppsx

... −π√α3−πα120πα12 5 √α9−π√α60 5 √α9ai0.8 5. 0 30.0 −7 .50 .5 2 .5 0. 75 2 .5 bi0.2α 0.1α 0.1α 0.1α 0.4α−10.2αThe size of the mean heart rate affects the shape of the ECG morphology. An analysis ... observation, and short transientsources of noise. Joint time-frequency analysis (JTFA) is then essentially a transfor-mation of an N-point M-dimensional signal (usually where M = 1 for the ECG) into ... Chan-Horizon Azuaje˙Book130 Models for ECG and RR Interval Processes [52 ] Stefanovska, A., et al., “The Cardiovascular System as Coupled Oscillators?” Physiol.Meas., Vol. 22, 2001, pp. 53 5 55 0. [53 ]...
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Advanced Methods and Tools for ECG Data Analysis - Part 6 docx

Advanced Methods and Tools for ECG Data Analysis - Part 6 docx

... preprocessing, data reduction, and analysis stages. This section focusesupon the strengths and limitations of TWA analysis methods, broadly compris-ing short-term Fourier transform (STFT)–based methods ... m, for signals having γ = 10, 5, 2 .5. For γ = 10, maxima occur at χ = 2.2171 and ρ = 0.9990, both with m = 20. For the intermediate signal to noise ratio, γ = 5, maxima occur at χ = 2.66 05 and ... couldtherefore be used on any band-limited waveform. Moreover, the error in each fit canprovide beat-by-beat confidence levels for any parameters extracted from the ECG and each fit can run in real...
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Advanced Methods and Tools for ECG Data Analysis - Part 7 ppt

Advanced Methods and Tools for ECG Data Analysis - Part 7 ppt

... which are visually informative and accessible for analysis at any time instant.Therefore, a technique which converts such point event series into a form suitable for standard analysis techniques ... ts= 5 seconds, Tm= 12 seconds, Ls= 5, µ = 0 .5, ξ = 0. 35, β = 0.7, δf= 0.2 Hz, and fw(1) = arg max0. 15 f ≤0.4(S1( f )).where aj,0= 1 and the poles zj, pappear in complex-conjugate ... not found, the procedure searches forwards in each ECG lead for up to TJ= 68 ms for a part of the waveform which “starts to flatten”(i.e., a part of waveform where slope became smaller than...
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Advanced Methods and Tools for ECG Data Analysis - Part 8 docx

Advanced Methods and Tools for ECG Data Analysis - Part 8 docx

... normal ECG waveform, and hence a greater degree of robustness in thewaveform segmentations.11 .5 Data CollectionIn order to develop an automated system for ECG interval analysis, we collecteda data ... 75. 3 68.2 –––– [5] , Time domain [g]79.2 81.4 –– ––––[a]81 .5 82 .5 –– ––––[7], KLT approach [g] 85. 2 86.2 75. 8 78.0 –> 77.0 58 .8 48 .5 47.8[a]87.1 87.7 78.2 74.1 –> 74.0 61.4 54 .8 58 .4[37], ... with standard algorithms. For the analysis of 10-second12-lead ECG signals, this is rarely an issue. However, when very large amountsof ECG data must be processed rapidly (e.g., for the analysis...
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Advanced Methods and Tools for ECG Data Analysis - Part 9 ppsx

Advanced Methods and Tools for ECG Data Analysis - Part 9 ppsx

... 2 2.99% 64 4 6. 25% f 200 1 0 .50 % 200 3 1 .5% F 371 3 0.81% 370 10 2.70%j 117 3 2 .56 % 1 05 10 9 .52 %J 40 3 7 .50 % 39 4 10. 25% S 51 2 2 0.39% 51 2 3 0 .58 %Total 6,690 74 1.83% 6,0 95 159 4.09%P1: ShashiAugust ... 4 05 S 1 00 00 2 5 00 0 2 50 90 51 9V 3 1 1 0 5 0 0 0 1 6 0 0 1,214 1,231Total 418 64 200 50 370 1 05 200 39 50 0 2,000 400 51 2 1,237 6,0 95 P1: ShashiAugust 24, 2006 11 :55 Chan-Horizon Azuaje˙Book320 ... automated ECG interval analysis systems are unable to differentiate be-tween normal ECG waveforms (for which the automated annotations are generallyreliable) and abnormal or unusual ECG waveforms (for...
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Advanced Methods and Tools for ECG Data Analysis - Part 10 pps

Advanced Methods and Tools for ECG Data Analysis - Part 10 pps

... discovery, 352 59 grid structure, 353 learning algorithm illustration, 354 learning dynamics, 353 learning process, 352 maps, 355 , 359 performance, 353 properties, 353 54 shapes, 358 spread amount, 353 visualization ... structures (GCS), 350 Growing self-organizing map (GSOM), 350 , 351 application to support ECG classification, 354 59 data set representation, 354 data visualization, 357 , 358 defined, 352 ECG cluster ... (XML) for representing ECG information. ecgML [ 65] , a markup language for ECG data acquisition and analy-sis, has been designed to illustrate the advantages offered by XML for supportingdata...
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