Consistent targeting of ¹³¹I-cG250 to metastatic disease in the sacrum (arrow) with multiple infusions. Consistent targeting is demonstrated following infusion 1 (A) anterior and (B) posterior images, and infusion 5 (C) anterior and (D) posterior images. (E) SPECT image in the same transaxial plane as (F) CT scan also shows excellent targeting to metastatic disease in the sacrum in this patient. The patient had stable disease at restaging.