RT Journal Article SR Electronic T1 Effects of Noise on the Determination of Ejection Fraction from Left Ventricular Time-Activity Curves JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 180 OP 182 VO 18 IS 2 A1 D. B. Twieg A1 E. M. Stokely A1 R. W. Parkey A1 J. T. Willerson A1 L. R. Nardizzi YR 1977 UL http://jnm.snmjournals.org/content/18/2/180.abstract AB