RT Journal Article SR Electronic T1 SPECT and Artifacts—In Search of the Imaginary Lesion JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 875 OP 877 VO 32 IS 5 A1 John W. Keyes, Jr. YR 1991 UL http://jnm.snmjournals.org/content/32/5/875.abstract AB