RT Journal Article SR Electronic T1 ECAT: A New Computerized Tomographic Imaging System for Positron-Emitting Radiopharmaceuticals JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 635 OP 647 VO 19 IS 6 A1 Phelps, Michael E. A1 Hoffman, Edward J. A1 Huang, Sung-Cheng A1 Kuhl, David E. YR 1978 UL http://jnm.snmjournals.org/content/19/6/635.abstract AB