RT Journal Article SR Electronic T1 Parallel-Hole, Collimator Design JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 724 OP 725 VO 15 IS 8 A1 Mark S. Gerber A1 Don W. Miller YR 1974 UL http://jnm.snmjournals.org/content/15/8/724.abstract AB