REFERENCES
- L Hatle, B Angelson & A Tromsdal, Non invasive assessment of atrioventricular pressure half time by Doppler ultrasound, Circulation, vol 60, pp 1096–1104, 1979.
- K Padmanabhan, D Nedumaran & S Ananthi, Gabor Spectra for Doppler Echocardiography, Med & Biol Engg and Computing, Peter Perigrinus Ltd, UK, vol 36, no 3, pp 270–275, May 1998.
- N Aydin & D H Evans, Implementation of Directional Doppler Technique using a Digital Signal Processor, Med & Biol Engg and Computing, UK, vol 32, no 4, pp S157–164, 1994.
- V Cizek, Discrete Hilbert Transforms, IEEE Trans on Audio and Electroacoustics, vol 18, no 4, pp 340–344, 1970.
- Navin C Nanda, Doppler Echocardiography, Lea and Febiger, London, 1993
- Sahasakul, On assessment of valve leaflets. Am Jour Cardiol, vol 62, p 424, 1988.
- PR Hoskins, P J Fish, W N McDicker & C Moran, Developments in Cardiovascular Ultrasound, Med & Biol Engg, UK, vol 36, no 3, pp 259–269, 1998.