Figure 5

The maximum intensity projection (MIP) image of an ¹⁸ F-FDG PET/CT scan in a patient with invasive ductal carcinoma of the breast and a low HF value. The image shows focal ¹⁸F-FDG uptake in the left breast (black arrow), ipsilateral internal mammary (white arrow), and axillary lymph nodes (black arrowhead). There is also focal ¹⁸F-FDG uptake in an enlarged paraaortic lymph node (white arrowhead). The SUVmax of the left breast mass was 16.9, the MTV was 1.66 cm³, the TLG was 21.21, and the heterogeneity factor (HF) was 0.04. This patient was still alive 52 months after acquisition of this image and had no clinical evidence of disease progression.