RT Journal Article SR Electronic T1 Three Brain SPECT Region-of-Interest Templates in Elderly People: Normative Values, Hemispheric Asymmetries, and a Comparison of Single- and Multihead Cameras JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 45 OP 56 VO 41 IS 1 A1 Lobaugh, Nancy J. A1 Caldwell, Curtis B. A1 Black, Sandra E. A1 Leibovitch, Farrell S. A1 Swartz, Richard H. YR 2000 UL http://jnm.snmjournals.org/content/41/1/45.abstract AB