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

Table 1

Clinical characteristics and lesion distribution of patients.

Characteristic	Number of patients (%)
No. of patients	58
Age (year), mean (range)	50.4 (28–67)
Stage
I	0
II	3 (5.2)
III	20 (34.5)
IVa	14 (24.1)
IVb	21 (36.2)
Site of bone metastases
Ribs	26 (19.3)
Pelvic bone	24 (17.8)
Cervical vertebra	14 (10.4)
Lumbar vertebra	24 (17.8)
Thoracic vertebra	28 (20.7)
Limb bone	10 (7.4)
Scapula	5 (3.7)
Skull	2 (1.5)
Others	2 (1.5)
Morphologic characteristics of bone metastases
Osteolytic lesions	67 (49.6)
Osteoblastic lesions	16 (11.8)
No change on CT	52 (35.5)

One patient may have more than one type of lesions.