The maximum SUV of free-breathing PET should not be accepted as accurate, especially in the lower lung and for small pulmonary lesions. In this patient, blurring of ¹⁸F-FDG accumulation was more apparent in fusion free-breathing PET/CT (top) than in fusion breath-hold PET/CT (bottom). Breath-hold imaging realizes a complete match between CT and PET and is thus recommended as part of the standard protocol for lung cancer.
See page 1223.