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FIGURE 1. Anterior fast (30 cm/min) whole-body images illustrate distribution of 111In-epratuzumab (0.218 GBq) in 54-y-old man with follicular NHL. Images taken at prevoiding (i.e., 1 h after end of infusion), 4, 24, and 48 h demonstrate blood-pool activity in heart and large blood vessels. Liver and spleen are seen, and bladder is seen only on prevoiding image. Images at 120, 144, and 168 h after injection show heart blood pool fading with persistent liver and spleen activity. There is perineal activity on all images, and nasopharyngeal activity through 48 h, in this patient. Tumor uptake can be seen in left neck and right iliac regions at 24 h. Additional sites in left supraclavicular region, left axilla, and 1 more right iliac/inguinal site are seen at 48 h. Tumor-to-background ratio improves on later images.
