Table 2. .
Patient examinations: Values of HU and SUV measurements in bright and dark band artifacts in WFBP, MARIS, and iMAR reconstructions. iMAR leads to a significant decrease of HU and SUVmean in bright band artifacts and to a significant increase of HU and SUVmean in dark band artifacts in comparison with WFBP. For MARIS, HU and SUV measurements do not change significantly in comparison with WFBP
| bright band | dark band | ||
|---|---|---|---|
| HU | WFBP | 391.4 ± 293.0 | −465.0 ± 241.4 |
| MARIS | 344.6 ± 314.7 | −370.9 ± 247.5 | |
| iMAR | 124.6 ± 184.5a | −74.3 ± 168.1a | |
| SUVmean | WFBP | 0.99 ± 0.40 | 0.72 ± 0.41 |
| MARIS | 0.96 ± 0.39 | 0.74 ± 0.42 | |
| iMAR | 0.88 ± 0.35a | 0.87 ± 0.46a | |
| SUVmax | WFBP | 1.09 ± 0.43 | 0.76 ± 0.43 |
| MARIS | 1.06 ± 0.42 | 0.79 ± 0.45 | |
| iMAR | 0.98 ± 0.39a | 0.92 ± 0.49a |
HU: Hounsfield Unit; MARIS: metal artifact reduction in image space; SUV: standardized uptake value; WFBP: weighted filtered back projection; iMAR: iterative metal artifact reduction.
a
p<0.017 between WFBP and iMAR