RT Journal Article SR Electronic T1 The “Harlequin” Artifact: Cause and Correction JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1133 OP 1134 VO 30 IS 6 A1 T.K. Johnson A1 S.E. Coulter A1 S.A. Sirr YR 1989 UL http://jnm.snmjournals.org/content/30/6/1133.abstract AB