RT Journal Article SR Electronic T1 An Investigation of the Magnitude and Causes of Count Loss Artifacts in SPECT Imaging JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1771 OP 1776 VO 32 IS 9 A1 Gillen, Gerard J. A1 Gilmore, Brian A1 Elliott, Alex T. YR 1991 UL http://jnm.snmjournals.org/content/32/9/1771.abstract AB