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Table 2 Mean image quality parameters for conventional 140 kVp and 130 keV virtual monochromatic imaging with and without O-MAR, without insertion of prostheses. Values are the mean of all 18 pellets ± standard deviation

From: Quantitative analysis of metal artifact reduction in total hip arthroplasty using virtual monochromatic imaging and orthopedic metal artifact reduction, a phantom study

  CT values (HU) CNR SNR Noise (HU)
Conventional 248.4 ± 4.1 37.3 ± 2.8 36.5 ± 5.2 6.9 ± 1.0
Conventional with O-MAR 248.4 ± 4.1 37.3 ± 2.8 36.5 ± 5.2 6.9 ± 1.0
130 keV VMI 150.4 ± 4.5 18.0 ± 1.5 19.3 ± 3.2 8.0 ± 1.2
130 keV VMI with O-MAR 150.4 ± 4.5 18.0 ± 1.5 19.3 ± 3.2 8.0 ± 1.2