Table 2 Semiquantitative assessment of artifact reduction.

From: Metal artifact reduction in ultra-high-resolution cone-beam CT imaging with a twin robotic X-ray system

Corrected attenuation ± standard deviation

Hyperdense artifacts

Hypodense artifacts

Artifact impaired soft tissue

MDCT

70 kVp

2070.3 ± 595.0

− 839.9 ± 140.0

− 385.4 ± 198.4

80 kVp

1157.5 ± 258.9

− 807.7 ± 122.1

− 174.0 ± 119.9

100 kVp

944.2 ± 229.2

− 498.7 ± 80.6

− 105.4 ± 100.8

120 kVp

713.1 ± 185.4

− 359.4 ± 68.7

− 94.7 ± 67.7

140 kVp

641.5 ± 141.6

− 286.4 ± 56.5

− 59.2 ± 52.0

Sn 100 kVp

326.4 ± 110.2

− 161.7 ± 74.5

− 58.2 ± 81.9

Sn 150 kVp

216.1 ± 76.2

− 85.9 ± 85.0

− 40.0 ± 89.4

CBCT

60 kVp

941.0 ± 658.5

55.8 ± 271.2

− 73.1 ± 170.9

80 kVp

83.3 ± 93.6

73.8 ± 73.9

− 2.5 ± 72.5

102 kVp

73.2 ± 65.7

74.1 ± 59.9

− 3.2 ± 62.5

117 kVp

80.2 ± 53.2

73.8 ± 44.2

− 5.1 ± 51.6

133 keV

75.1 ± 52.8

75.2 ± 43.4

− 2.0 ± 43.5

MDCT Sn 150 kVp

vs. MDCT 70 kVp

< .001

< .001

< .001

vs. MDCT 80 kVp

.003

< .001

< .001

vs. MDCT 100 kVp

< .001

< .001

< .001

vs. MDCT 120 kVp

< .001

< .001

< .001

vs. MDCT 140 kVp

< .001

< .001

.029

vs. MDCT Sn 100 kVp

.034

.023

.216

vs. CBCT 60 kVp

.017

.032

.940

vs. CBCT 80 kVp

.036

.008

.001

vs. CBCT 102 kVp

.039

.004

< .001

vs. CBCT 117 kVp

.027

.010

< .001

vs. CBCT 133 kVp

.033

.009

< .001

CBCT 80 kVp

vs. MDCT 70 kVp

< .001

< .001

< .001

vs. MDCT 80 kVp

.001

< .001

< .001

vs. MDCT 100 kVp

< .001

< .001

< .001

vs. MDCT 120 kVp

< .001

< .001

< .001

vs. MDCT 140 kVp

< .001

< .001

< .001

vs. MDCT Sn 100 kVp

.007

< .001

< .001

vs. MDCT Sn 150 kVp

.036

.008

.001

vs. CBCT 60 kVp

.006

1

.156

vs. CBCT 102 kVp

.366

1

1

vs. CBCT 117 kVp

1

1

1

vs. CBCT 133 kVp

.925

1

1

  1. CBCT, cone-beam computed tomography; kVp, kilovoltage peak; MDCT, multidetector computed tomography; Sn, 0.4 mm tin prefiltration.
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