Research Article

Comparison of Bone Metastases between 18F-NaF PET/CT, 18F-NaF PET, and Planar 99mTc-MDP Bone Scintigraphy in Patients with Newly Diagnosed Nasopharyngeal Carcinoma

Figure 2

A 28-year-old man with NPC and a single histologically confirmed bone metastasis in the 4th lumbar spine. Planar 99mTc-MDP bone scintigraphy yielded false-negative results (a). Clear identification of metastasis in PET (b) (arrow) and in 18F-NaF PET/CT (c) (arrows). In addition, PET identified a lesion on the left upper femur with tracer uptake and considered a bone metastasis (c) (arrows), while CT showed a sclerotic border around the lesion (d) (arrowheads) and suggestive of a benign lesion in PET/CT (correctly according to the reference standard).
(a)
(b)
(c)
(d)