Table 3 Multi-observer assessment of bone image quality and artifact intensity.
Scan protocol | CTDIvol [mGy] | Rating sum Bone | FOM Rank Bone | Rating sum Artifacts | FOM Rank Artifacts |
|---|---|---|---|---|---|
MDCT | |||||
70 kVp 50 mAs | 1.3 | 7 | #20 | 7 | #14 |
70 kVp 97 mAs | 2.7 | 11 | #14 | 7 | #22 |
80 kVp 122 mAs | 5.1 | 14 | #19 | 9 | #23 |
70 kVp 199 mAs | 5.3 | 12 | #25 | 8 | #24 |
Sn 100 kVp 898 mAs | 7.5 | 21 | #8 | 23 | #5 |
Sn 150 kVp 146 mAs | 8.2 | 24 | #5 | 24 | #7 |
100 kVp 113 mAs | 9.8 | 20 | #18 | 14 | #21 |
80 kVp 241 mAs | 10.2 | 21 | #17 | 11 | #25 |
120 kVp 101 mAs | 14.1 | 28 | #11 | 18 | #18 |
140 kVp 96 mAs | 18.9 | 26 | #21 | 20 | #20 |
100 kVp 227 mAs | 19.5 | 26 | #24 | 15 | #27 |
80 kVp 489 mAs | 20.3 | 18 | #32 | 12 | #29 |
120 kVp 202 mAs | 28.1 | 35 | #15 | 18 | #26 |
140 kVp 192 mAs | 37.7 | 31 | #27 | 20 | #28 |
100 kVp 453 mAs | 39.3 | 28 | #30 | 14 | #32 |
120 kVp 405 mAs | 54.0 | 37 | #28 | 19 | #30 |
140 kVp 383 mAs | 75.2 | 35 | #31 | 21 | #31 |
CBCT | |||||
60 kVp 0.6 mAs | 2.3 | 7 | #29 | 7 | #19 |
60 kVp 1.2 mAs | 4.5 | 14 | #16 | 18 | #4 |
80 kVp 0.6 mAs | 4.5 | 21 | #1 | 24 | #1 |
102 kVp 0.6 mAs | 9.1 | 24 | #7 | 28 | #2 |
60 kVp 2.5 mAs | 9.5 | 16 | #26 | 21 | #12 |
80 kVp 1.2 mAs | 9.9 | 28 | #3 | 28 | #3 |
117 kVp 0.6 mAs | 13.6 | 33 | #2 | 31 | #6 |
102 kVp 1.2 mAs | 16.3 | 33 | #6 | 31 | #9 |
80 kVp 2.5 mAs | 17.4 | 32 | #9 | 29 | #11 |
133 kVp 0.6 mAs | 21.6 | 35 | #10 | 37 | #8 |
117 kVp 1.2 mAs | 23.6 | 41 | #4 | 35 | #10 |
102 kVp 2.5 mAs | 34.6 | 35 | #22 | 33 | #16 |
133 kVp 1.2 mAs | 36.3 | 42 | #12 | 40 | #13 |
117 kVp 2.5 mAs | 44.1 | 46 | #13 | 38 | #15 |
133 kVp 2.5 mAs | 61.0 | 46 | #23 | 42 | #17 |
Fleiss kappa (95% confidence interval; p < .001) | 0.652 (0.618–0.686) | 0.570 (0.535–0.606) | |||
