FIGURE 1. Anterior (left) and posterior (right) images at various times after intraperitoneal administration of 111In-labeled humanized anti-Ley antibody hu3S193.
FIGURE 2. (A) Anterior (left) and posterior (right) whole-body images obtained 3 d after administration of 131I-chimeric G250. Targeting to known lesions in scalp, hilum, and lung is excellent. (B) CT (top row) and SPECT (bottom row) coregistered images demonstrate uniform distribution throughout left hilar mass in same patient.
FIGURE 3. Tumor pretargeting with bispecific construct. Bispecific agent (e.g., bispecific antibody or antibody/streptavidin fusion) is administered and saturates antigenic sites on tumor. Subsequently, a small radionuclide carrier is administered and binds to the tumor-localizing bispecific agent.