18F-fluoride PET/CT as an early predictor of bony fusion after posterior lumbar interbody fusion– a prospective study

Table 3 P-values for the intraindividual differences within the fusion group in SUVmax, Ki, K1/k2, k3/(k2 + k3) at six weeks and one year after PLIF for the operated rois versus the control rois and for the endplate rois versus the intervertebral rois. A red font was used to indicate p-values ≤ 0.05

	Comparison		6 WEEKS p-values				1 YEAR p-values
	Comparison		SUVmax	Ki	K1/k2	k3/(k2 + k3)	SUVmax	Ki	K1/k2	k3/(k2 + k3)
FUSION segments	operated ROIs vs. control ROIs	endUP vs. endUP_C	0.005	0.005	0.011	0.028	0.007	0.005	0.005	0.007
		inter vs. inter_C	0.005	0.008	0.008	0.005	0.005	0.005	0.022	0.008
		endLOW vs. endLOW_C	0.007	0.008	0.028	0.008	0.036	0.009	0.333	0.005
	endplate ROIs vs. intervertebral ROIs	endUP_C vs. inter_C	0.005	0.005	0.066	0.063	0.005	0.007	0.575	0.510
		endLOW_C vs. inter_C	0.005	0.005	0.005	0.013	0.005	0.005	0.005	0.021
		endUP_C vs. endLOW_C	0.203	0.799	0.008	0.128	0.386	0.114	0.022	0.508
		endUP vs. inter	0.386	0.441	0.767	0.678	0.646	0.721	0.169	0.047
		endLOW vs. inter	0.203	0.889	0.374	0.314	0.161	0.203	0.721	0.169
		endUP vs. endLOW	0.333	0.594	0.799	0.953	0.401	0.445	0.799	0.646

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