FIGURE 2. Anterior (left) and posterior (right) planar Z-¹²³I-MIVE scintigraphy of patient 8 before (A) and 3 wk after (B) starting tamoxifen. Baseline Z-¹²³I-MIVE scintigraphy (A) shows diffuse increased uptake in right breast (T4 tumor) with persisting uptake after therapy (B). Masking of intestinal and hepatic activity was done by computer processing after acquisition.