123. Sahn D.J., Maciel B.C. Physiological valvular regurgitation. Doppler echocardiography and the potential for iatrogenic heart disease. Circulation 78:1075, 1987
124. Sanfilippo A.J., Picard M.H., Newell J.B., Rosas E., Davidoff R., Thomas J.D., Weyman A.E. Echocardiographic assessment of patients with infectious endocarditis: prediction of risk for complications. J. Am. Coll. Cardiol. 18:1191, 1991
125. Simpson I.A., Valdes-Cruz L.M., Sahn D.J., Murillo A., Tamura T., Chung K.J. Doppler color flow mapping of simulated in vitro regurgitant jets: evaluation of the effects of orifice size and hemodynamic variables. J. Am. Coll. Cardiol. 13:1195, 1989
126. Skjaerpe T., Hegrenaes L., Hatle L.K. Noninvasive estimation of valve area in patients with aortic stenosis by Doppler ultrasound and two-dimensional echocardiography. Circulation 72:810, 1985
127. Smith M.D. Evaluation of valvular regurgitation by Doppler echocardiography. Cardiol. Clin. 9:193, 1991
128. Smith M.D., Grayburn P.A., Spain M.G., DeMaria A.N. Observer variability in the quantitation of Doppler color flow jet areas for mitral and aortic regurgitation. J. Am. Coll. Cardiol. 11:579, 1988
129. Stamm R.B., Martin R.P. Quantification of pressure gradients across stenotic valves by Doppler ultrasound. J. Am. Coll. Cardiol. 2:707, 1983
130. Teague S.M. Doppler echocardiographic evaluation of aortic regurgitation. Cardiol. Clin. 8:249, 1990
131. Touche T., Prasquier R., Nitenberg A., Zuttere D., Gourgon R. Assessment and follow-up of patients with aortic regurgitation by an updated Doppler echocardiographic measurement of the regurgitant fraction in the aortic arch. Circulation 72:819, 1985
132. Vandenbossche J.L., Massie B.M., Schiller N.B., Karliner J.S. Relation of left ventricular shape to volume and mass in patients with minimally symptomatic chronic aortic regurgitation. Am. Heart J. 116:1022, 1988
133. Veyrat C., Lessana A., Abitbol G., Ameur A., Benaim R., Kalmanson D. New indexes for assessing aortic regurgitation with two-dimensional Doppler echocardiographic measurement of the regurgitant aortic valvular area. Circulation 68:998, 1983
134. Williams G., Labovitz A., Nelson J., Kennedy H. Value of multiple echocardiographic views in the evaluation of aortic stenosis in adults by continuous-wave Doppler. Am. J. Cardiol. 55:445, 1985
135. Wong M., Matsumura M., Suzuki K., Omoto R. Technical and biological sources of variability in the mapping of aortic, mitral and tricuspid color flow jets. Am. J. Cardiol. 60:847, 1987