RT Journal Article SR Electronic T1 Digital Low-Pass Filtering JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 844 OP 846 VO 17 IS 9 A1 Buzzi, K. W. A1 Weinraub, J. M. A1 Irwin, G. A. L. YR 1976 UL http://jnm.snmjournals.org/content/17/9/844.abstract AB