Metabolic Tumor Volume by ¹⁸F-FDG PET/CT Can Predict the Clinical Outcome of Primary Malignant Spine/Spinal Tumors

Table 3

Factors affecting overall survival in the univariate and multivariate analyses.

Factor	Cut-off value	Univariate	Multivariate
		value	HR	95% CI	value
MTV	83 ml	0.002	46.1	1.20–216	0.035
TLG	257 SUVml	0.03	1	0.99–1.02	0.99
Size	5 cm	0.35
Surgery	Yes	0.95
Surgery with wide margin	Yes	0.25
Chemotherapy	Yes	0.59
Radiotherapy	Yes	0.65

HR: hazard risk. 95% CI: 95% confidence interval.