Table 2 Comparison of ULD-CT and SD-CT protocols
Group | Shoulder (n = 24) | Knee (n = 17) | Ankle (n = 25) | Wrist (n = 26) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTDI (mGy) | DLP (mGy × cm) | ED (μSv) | CTDI (mGy) | DLP (mGy × cm) | ED (μSv) | CTDI (mGy) | DLP (mGy × cm) | ED (μSv) | CTDI (mGy) | DLP (mGy × cm) | ED (μSv) | |
SD | 14.78 ± 0.65 | 222.43 ± 30.54 | 2513.49 ± 345.13 | 11.46 ± 0.74 | 177.62 ± 21.43 | 71.05 ± 8.57 | 11.29 ± 0.39 | 173.01 ± 18.26 | 34.60 ± 3.65 | 4.43 ± 0.36 | 47.01 ± 11.30 | 9.40 ± 2.26 |
ULD | 1.66 ± 0.06 | 25.51 ± 2.47 | 23.21 ± 2.24 | 0.34 ± 0.05 | 5.25 ± 0.61 | 2.10 ± 0.25 | 0.34 ± 0.05 | 5.82 ± 0.54 | 1.02 ± 0.11 | 0.10 ± 0.00 | 1.47 ± 0.32 | 0.29 ± 0.06 |
F | 9827.75 | 991.24 | 1249.48 | 3833.18 | 1098.36 | 1098.36 | 19,564.92 | 2112.25 | 2112.25 | 3837.55 | 422.21 | 422.21 |
P | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 | < 0.0001 |