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Mean and standard deviation (SD) of the HU values 7 tissue-equivalent phantom materials in the HN715 phantom, ordered from lowest to highest mean value.
| Material | Mean (HU) | SD (HU) |
|---|---|---|
| Soft tissue | 24 | 9 |
| Brain | 52 | 8 |
| Spinal disc | 92 | 2 |
| Trabecular bone | 197 | 7 |
| Cortical bone | 923 | 107 |
| Tooth dentin | 1280 | 27 |
| Tooth enamel | 2310 | 80 |
