Breast cancer survivors reporting chemo-fog were examined using 99Tc-TRODAT-1 SPECT measuring dopamine transport, reporting a 20–23% decrease in the putamen, caudate, and striatum [93], and TSPO-PET showed signs of neuroinflammation in the occipital and parietal lobes both compared to non-treated patients and a healthy group 4 weeks after (6 months of) CTx [94]. This evidence concerns the gene TSPO and breast carcinoma.