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

... [% ]74 472 71 475 44 r n (N) [%] 77 54 37 27 21 19 18 16  r(N) [%]3 7 101314141412 ⇑ ST Segment Patterns, Human Annotator: r c (N) [% ]74 472 71 475 44 r n (N) [%] 74 48 29 21 15 12 11 10  r(N) [%]01 278 776 ⇑ coefficients ... which are visually informative and accessible for analysis at any time instant. Therefore, a technique which converts such point event series into a form...

Ngày tải lên: 13/08/2014, 12:20

... Alternans 1 97 7.3 Pathophysiology of T-Wave Alternans 1 97 7.4 Measurable Indices of ECG T-Wave Alternans 199 7. 5 Measurement Techniques 201 7. 5.1 Requirements for the Digitized ECG Signal 201 7. 5.2 ... Chan-Horizon Azuaje˙Book Advanced Methods and Tools for ECG Data Analysis Gari D. Clifford Francisco Azuaje Patrick E. McSharry Editors artechhouse.com P1: Shash...

Ngày tải lên: 13/08/2014, 12:20

... becoming the standard for ECGs); HL7 [26, 27] (an XML-based format for the exchange of data in hospitals); and WaveForm DataBase (WFDB), a set of libraries developed at MIT [28, 29]. HL7 is by nature ... 99 .74 103 172 5 0 0 1 0 0 0 0 4 0 0 99 .77 99.94 105 21 17 29 4 133 0 0 0 0 4 0 1 99 .77 94. 17 106 1236 459 0 1 0 0 0 0 0 1 0 99.94 99.94 108 1461 13 2 2 57 0 0 0 0 4 0 0 99 .73...

Ngày tải lên: 13/08/2014, 12:20

... performance statistics (sensitivity, specificity) on the MIT-BIH database [2] of 93.2%, 94.4% for sinus rhythm, 100%, 96.2% for superventricular tachycardia, 97. 7%, 98.6% for VT, and 98.6%, 97. 7% ... 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 [7...

Ngày tải lên: 13/08/2014, 12:20

... observation, and short transient sources 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 ... transform (WT) is a popular technique for performing JTFA and belongs to a family of JTFA techniques that include the STFT, the Wigner Ville transform (WVT), the Zhao-Atlas-Marks...

Ngày tải lên: 13/08/2014, 12:20

... 269– 272 . [ 17] Mark, R. G., and G. B. Moody, ECG Arrhythmia Analysis: Design and Evaluation Strate- gies,” Chapter 18 in I. Gath and G. F. Inbar, (eds.), Advances in Processing and Pattern Analysis ... H., and H. Heinrich, Analysis of ECG Late Potentials Using Time-Frequency Methods, ” in M. Akay, (ed.), Time Frequency and Wavelets in Biomedical Signal Process- ing, Chap...

Ngày tải lên: 13/08/2014, 12:20

... preprocessing, data reduction, and analysis stages. This section focuses upon the strengths and limitations of TWA analysis methods, broadly compris- ing short-term Fourier transform (STFT)–based methods ... management [10]. 7. 2 Phenomenology of T-Wave Alternans Detecting TWA from the surface ECG exemplifies a bench-to-bedside bioengineer- ing solution to tissue-level and c...

Ngày tải lên: 13/08/2014, 12:20

... 58.4 [ 37] , Time domain, KLT [g] 77 .2 86.3 67. 5 69.2 <– 79 .6 78 .3 68.4 67. 3 [a] 81.3 89.2 77 .6 68.9 <– 78 .9 80 .7 73.1 74 .9 [ 17] , Neural net [g] 85.0 68 .7 73.0 69.5 –––– [a] 88.6 78 .4 72 .2 67. 5 ... –––– [a] 84 .7 86.1 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...

Ngày tải lên: 13/08/2014, 12:20

... automated ECG interval analysis systems are unable to differentiate be- tween normal ECG waveforms (for which the automated annotations are generally reliable) and abnormal or unusual ECG waveforms (for ... approach for the task of automated ECG interval analysis: the choice of representation for the ECG signal and the choice of model for the segmentation. We have dem...

Ngày tải lên: 13/08/2014, 12:20

... 77 disturbance after PVC, 90 ectopy and, 80–81 evaluation metrics, 73 FDA and, 76 frequency domain analysis, 74 information limits, 79 –80 long-term components, 74 77 LSP, 77 78 signal, 228, 229 at stress ... filtering Nonlinear signal processing, 172 78 correlation dimension, 174 76 entropy, 176 77 Lyapunov exponents, 173 74 nonlinear diagnostics, 177 78 state space reco...

Ngày tải lên: 13/08/2014, 12:20