RT Journal Article SR Electronic T1 The Bifocal Diverging Collimator: A Means of Simultaneous Biplane Imaging of the Heart During Equilibrium Radionuclide Ventriculography JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 71 OP 76 VO 21 IS 1 A1 Boucher, Charles A. A1 Strauss, H. William A1 Okada, Robert D. A1 Kirshenbaum, Howard D. A1 Kushner, Frederick G. A1 McKusick, Kenneth A. A1 Block, Peter C. A1 Leask, John W. A1 Pohost, Gerald M. YR 1980 UL http://jnm.snmjournals.org/content/21/1/71.abstract AB