Table 1.

A comparison of the mean CT values in different regions of interest (ROIs)

ROI	WFBP	MARli	NMAR	p-value
				WFBP vs MARli	WFBP vs NMAR	MARli vs NMAR
ROI2	66.41 ± 72.44	58.05 ± 39.73	56.98 ± 34.34	0.172	0.123	0.862
ROI3	60.03 ± 39.48	52.23 ± 46.67	53.34 ± 22.09	0.086	0.140	0.807
ROI4	49.28 ± 23.38	49.21 ± 32.44	48.21 ± 23.09	0.983	0.752	0.769
ROI5	59.38 ± 13.37	61.19 ± 11.77	60.48 ± 8.97	0.185	0.422	0.600
ROI6	62.02 ± 11.00	61.04 ± 13.33	60.09 ± 10.22	0.473	0.159	0.488

MARli, linear interpolation metal artefact reduction; NMAR, normalized metal artefact reduction; WFBP, weighted filtered back-projection.

Data are given as mean ± standard deviation unless otherwise indicated.