Fig. 5
A typical case of the relationship between MTV and AR expression. Two patients were diagnosed with IDC (invasive ductal breast carcinoma) successively in a year. The former (A: PET/CT fusion image, B: The VOI of the lesion, C: The histogram of VOI) was confirmed as AR-positive (SUVmax: 8.00; MTV: 10.76 cm3). The latter (D: PET/CT fusion image, E: The VOI of the lesion, F: The histogram of VOI) was confirmed as AR negative (SUVmax: 9.12; MTV: 21.32 cm3). These lesions were similar on PET/CT images but showed significant differences in the histograms of the radiomic features