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Representative early FDG and FLT-PET responses. Top panel: 72-year-old female with invasive ductal carcinoma at diagnosis. 7 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. 35 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 baseline
