RT Journal Article SR Electronic T1 Significance of Nonuniform Attenuation Correction in Quantitative Brain SPECT Imaging JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1719 OP 1726 VO 39 IS 10 A1 Nallakkandi Rajeevan A1 I. George Zubal A1 S. Quinn Ramsby A1 Sami S. Zoghbi A1 John Seibyl A1 Robert B. Innis YR 1998 UL http://jnm.snmjournals.org/content/39/10/1719.abstract AB