RT Journal Article SR Electronic T1 Determination of Radionuclide Concentrations with Positron CT Scanning (PETT): Concise Communication JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 845 OP 847 VO 18 IS 8 A1 J. O. Eichling A1 C. S. Higgins A1 M. M. Ter-Pogossian YR 1977 UL http://jnm.snmjournals.org/content/18/8/845.abstract AB