TABLE 3.

Mean CT attenuation and noise of the reference, uncorrected, MAC, VMI, and AI‐MAC images with the phantom using the Φ 6.5 × 30‐mm and Φ 7.5 × 40‐mm screws.

		Φ 6.5 × 30‐mm screws				Φ 7.5 × 40‐mm screws
	Reference	Uncorrected	MAC	VMI	AI‐MAC	Uncorrected	MAC	VMI	AI‐MAC
Bone
CT attenuation (HU)	363.98 ± 33.58	579.90 ± 56.43	440.80 ± 55.10	230.46 ± 32.25	389.79 ± 64.58	690.53 ± 91.72	526.79 ± 114.77	263.97 ± 28.88	404.83 ± 37.40
Noise (HU)	52.89 ± 2.94	74.46 ± 14.86	56.32 ± 7.36	53.56 ± 8.66	55.31 ± 5.60	82.43 ± 10.42	62.60 ± 9.58	56.43 ± 5.92	59.18 ± 4.59
Muscle
CT attenuation (HU)	61.04 ± 4.80	102.91 ± 20.22	86.78 ± 19.84	64.50 ± 6.70	64.69 ± 4.81	128.83 ± 13.92	103.32 ± 13.69	60.28 ± 10.86	65.35 ± 8.46
Noise (HU)	11.00 ± 1.04	28.93 ± 1.51	18.78 ± 2.78	16.73 ± 4.35	12.04 ± 1.49	31.90 ± 9.02	18.77 ± 3.61	25.51 ± 1.79	13.03 ± 1.70

Abbreviations: AI‐MAC, artificial intelligence metal artifacts correction; MAC, metal artifact correction; VMI, virtual monochromatic imaging.