1. Detection and estimation of the degree of mitral regurgitation by range-gated pulsed doppler echocardiography;Abbasi, A.S.; Allen, M.W.; DeCristofaro, D.; Ungar, I.;Circulation,1980
2. Doppler ultrasound in cardiology: physical principles and clinical application;Hatle, L.; Angelsen, B.
3. Is continuous wave Doppler too sensitive in diagnosing pathologic valvular regurgitation?;Yock, P.G.; Schnittger, I.; Popp, R.L.;Circulation,1984
4. Pulsed doppler regurgitant flow patterns ofnormal valves;Kostucki, W.; Vandenbossche, J.L.; Friart, A.; Englert, M.;Am J Cardiol,1986
5. Color doppler evaluation of valvular regurgitation in normal subjects;Yoshida, K.; Yoshikawa, J.; Shakudo, M.; Akasaka, T.; Jyo, Y.; Takao, S.; Shiratori, K.; Koizumi, K.; Okumachi, F.; Kato, H.; Fukaya, T.;Circulation,1988