RT Journal Article SR Electronic T1 Cross-Sectional Anatomy JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 866 OP 866 VO 19 IS 7 A1 Robert G. Levitt A1 Thomas P. Naidich YR 1978 UL http://jnm.snmjournals.org/content/19/7/866.1.abstract AB