%0 Journal Article %A Paul H. Murphy %A John A. Burdine %A Marcos Calderon %T Clinical Appraisal of an Experimental Converging Collimator %D 1974 %J Journal of Nuclear Medicine %P 291-293 %V 15 %N 4 %U https://jnm.snmjournals.org/content/jnumed/15/4/291.full.pdf