RT Journal Article SR Electronic T1 Reproducibility of Ejection-Fraction Determinations by Equilibrium Radionuclide Angiography in Response to Supine Bicycle Exercise: Concise Communication JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 491 OP 495 VO 20 IS 6 A1 Pfisterer, Matthias E. A1 Battler, Alexander A1 Swanson, Susan M. A1 Slutsky, Robert A1 Froelicher, Victor A1 Ashburn, William L. YR 1979 UL http://jnm.snmjournals.org/content/20/6/491.abstract AB