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HU nonuniformity in water-equivalent sections
| Maximum HU difference and standard deviation among nine ROIs | ||||
|---|---|---|---|---|
| Head | Pelvis | |||
| Max difference | Standard deviation | Max difference | Standard deviation | |
| 2D grid only | 39 HU | ±12.3 HU | 65 HU | ±21.7 HU |
| 2D grid + GSS | 32 HU | ±10.3 HU | 30 HU | ±10.2 HU |
| MDCT | 12 HU | ±4.7 HU | 21 HU | ± 6.4 HU |
