Table 3.

Findings of cervical spine lesions on BS and MRI.

Imaging findings	ORN	Metastasis	P
BS findings
Patient-wise analysis (n)	21	14
Abnormal uptake at other bone sites
Yes	5 (23.8%)	9 (64.3%)	0.016
No	16 (72.2%)	5 (35.7%)
Lesion-wise analysis (n)	44	31
Detection rate	27 (61.4%)	25 (80.6%)	0.07
Radiotracer uptake greater than that in the anterior iliac spine	5 (11.4%)	15 (48.4%)	< 0.001
MRI findings
Patient-wise analysis (n)	21	14
Cervical lymphadenopathy
Yes	2 (9.5%)	11 (78.5%)	< 0.001
No	19 (90.5%)	6 (42.9%)
Radiation encephalopathy
Yes	2 (9.5%)	0 (0%)	0.145
No	19 (90.5%)	14 (100%)
Lesion-wise analysis (n)	44	31
Vertebral marrow edema	42 (95.5%)	23 (74.2%)	0.007
Vertebral enhancement	42 (95.5%)	31 (100%)	0.141
Vertebral destruction	6 (13.6%)	10 (32.3%)	0.054
Vertebral soft-tissue mass	4 (9.1%)	12 (38.7%)	0.002
Vertebral body collapse	1(2.3%)	3 (9.7%)	0.163
Paravertebral muscle edema	20 (45.5%)	6 (19.4%)	0.017

ORN, Osteoradionecrosis.

Numbers in parentheses were used to calculate percentages; we calculated P-values by using the Pearson chi-square test (or Fisher test); P < 0.05 indicates a significant difference.