RT Journal Article SR Electronic T1 Gallium-67 Imaging in Retroperitoneal Fibrosis: Significance of a Negative Result JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 521 OP 523 VO 32 IS 3 A1 Arnold F. Jacobson YR 1991 UL http://jnm.snmjournals.org/content/32/3/521.abstract AB