30-08-2013, 03:37 PM
Biomedical Signal Processing
Biomedical Signal.ppt (Size: 4.16 MB / Downloads: 67)
What is it?
Biomedical Signal Processing: Application of signal processing methods, such as filtering, Fourier transform, spectral estimation and wavelet transform, to biomedical problems, such as the analysis of cardiac signals, the breathing cycle,…etc.
A broader aspect: Biomedical imaging, genomic signal processing,…etc.
Medical Diagnosis:
Heart Attack as an Example
Symptoms:
Chest pressure with stress, heart burn, nausea, vomiting, shortness of breath, heavy sweating.
Chest pain, heart attack, arrhythmias.
Biomedical Signals:
Broader Definition
Signals as a result of physiological activities in the body:
Electrical and Non-electrical
Invasive/Non-invasive interrogation of an external field with the body
Diagnosis and therapy
Will focus mostly on bioelectric signal.
Outline
Bioelectrical signals:
Excitable cells
Resting/action potential
ECG, EEG,…etc
Applications of signal processing techniques
Sampling, filtering, data compression,…etc
Non-stationary nature of biomedical signals
ECG
One of the main methods for assessing heart functions.
Many cardiac parameters, such as heart rate, myocardial infarction, and enlargement can be determined.
Five special groups of cell:
SA, AV, common bundle, RBB and LBB.