Fig. 4From: 18F-fluorodeoxyglucose (FDG) PET or 18F-fluorothymidine (FLT) PET to assess early response to aromatase inhibitors (AI) in women with ER+ operable breast cancer in a window-of-opportunity studyRepresentative early FDG and FLT-PET responses. Top panel: 72-year-old female with invasive ductal carcinoma at diagnosis. 7Â days between FDG scans. Ki-67 went from 27 to 5%. SUVmax reduced from 3.5 to 2.5 at the time of follow up FDG-PET. Bottom panel: 57-year-old female with invasive lobular carcinoma. 35Â days between FLT scans. Ki-67 went from 23 to 20%. SUVmax reduced from 3.2 to 2.2 at the time of follow-up FLT-PET. CTs for attenuation are shown for imaging baselineBack to article page