FIGURE 1.

Anterior HSA ¹³¹I-MIBG images in 60-y-old man with metastatic paraganglioma. (A and B) Dosimetric images were performed 1 h (A) and 96 h (B) after intravenous administration of 185 MBq of HSA ¹³¹I-MIBG with standard in field of view (arrows) to allow calculation of organ dose limits. Images show multiple metastases that increase in contrast over time. (C) Three days after therapy with 18.4 GBq of HSA ¹³¹I-MIBG, imaging revealed robust retention in sites of disease, including some not visible on dosimetric images. Patient exhibited markedly reduced hormonal symptoms, including decreased need for antihypertensive medications lasting over 2 y.