Gabor spectra for Doppler echocardiography
- 59 Downloads
Doppler echocardiography on current ultrasonography machines makes use of short-time Fourier spectrograms (STFTs) to display the patterns of blood vevocities in the heart chamber. From these sonologists infer the functional parameters, such as valve area, that have pathological significance. After mention of the lacuna in such an STFT display, the Gabor transform and associated Gabor spectrogram evaluation techniques are described. Finally, comparative views of ultrasound machine display with PC-based STFT and Gabor displays for two typical patients are shown, with inferences in support of the proposed Gabor display.
KeywordsDoppler Fourier spectrogram Gabor transform Wigner-Ville distribution Gabor spectrogram Mitral stenosis Tricuspid regurgitation
Unable to display preview. Download preview PDF.
- Almgren, R. (1994): ‘Gabor spectrogram.’ Communication from National Instrumets, 6504 Bridge Point Pkwy, Austin, TX, 78730-5039, USAGoogle Scholar
- Gabor, D. (1946): ‘Theory of communication’,J. IEE (Lon),93, (III), 429–457Google Scholar
- Nada, N. S. (1989): ‘Doppler echocardiography, 2nd edn.’, (Lea and Febiger, Phil)Google Scholar