Patient 17. Non-target 90Y activity along the gastric greater curve causing CTCAE grade 3 toxicity . A 90Y PET VOI of the activity along the gastric greater curve was defined by volumetric isocontour thresholding, visually constrained to its CT anatomical margins, shown here in (a) trans-axial, (b) coronal, and (c) sagittal planes. Within this VOI, the mean 90Y radioconcentration at the time of scan (813.1k Bq/ml) was decay-corrected back to the time of 90Y radioembolization (1,021.5 kBq/ml). By 90Y MIRD macrodosimetry, the non-target mean absorbed dose to the gastric greater curve was approximately 49 Gy within the VOI. Gastroscopy and biopsy findings were reported in part 1 .