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Table 2 Comparison of qualitative ratings. Mean cumulative values and respective standard deviations of all qualitative ratings among different reconstruction algorithms, sub-grouped by implant material configurations (screw/rod). Note significantly lower scores, i.e. higher image quality for carbon (C) screw compared to titanium (Ti) screw containing configurations. Rod material had comparably lower impact on image quality

From: Comparison of different CT metal artifact reduction strategies for standard titanium and carbon‐fiber reinforced polymer implants in sheep cadavers

 

Ti/Ti

Ti/C

C/C

C/Ti

sk SE 80 kV

16.3 ± 0.58

15 ± 0

1.08 ± 0.07

5.54 ± 1.53

bk SE 80 kV

16.3 ± 0.58

15 ± 0

1 ± 0.13

5.50 ± 1.42

sk SE 120 kV

16.3 ± 0.58

14.92 ± 0.14

0.75 ± 0.33

4.6 ± 0.19

bk SE 120 kV

16 ± 0

15 ± 0

0.5 ± 0.71

3.53 ± 0.30

sk SE 120 kV iMAR

15.36 ± 0.13

12.46 ± 2.15

0.42 ± 0.14

2.7 ± 0.17

sk DE 120 kV Mix

12.97 ± 2.71

12.21 ± 2.55

0.25 ± 0.25

2.10 ± 0.95

bk DE 120 kV Mix

12.63 ± 3.07

12.25 ± 2.54

0 ± 0

1.97 ± 0.91

sk SE Sn 150 kV

10.65 ± 0.65

10.21 ± 0.36

0 ± 0

0.53 ± 0.50

bk SE Sn 150 kV

10.35 ± 0.60

10.21 ± 0.36

0 ± 0

0.3 ± 0.3

sk DE ME 130 keV

10.25 ± 0.66

9.3 ± 0.63

0 ± 0

0 ± 0

bk DE ME 130 keV

9.92 ± 0.14

9.08 ± 0.80

0 ± 0

0 ± 0

  1. bk bone kernel, C carbon, DE dual energy, iMAR iterative metal artifact reduction (brand name), ME monoenergetic extrapolation, SE single energy, sk soft tissue kernel, Sn tin-filtered, Ti titanium