Figure 6

Tumor side and non-tumor side CLI with corresponding photographic images. CLI using [⁶⁸Ga]GaCl₃ on a day 16 fibrosarcoma tumor on (a) tumor side and (b) non-tumor side with corresponding photographic images below. The vasculature on the tumor side is more prominent, with the lateral vessel entering the tumor attenuating 8% of the Cerenkov light, whereas the lateral vessel on the non-tumor side attenuated only 3% of the Cerenkov light. The tumor is outlined with red enclosure.