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Table 2
Mass density, electron density and the calculated CT numbers of real human tissues (for stoichiometric method) at tube voltage of 120 kVp of Siemens SOMATOM sensation 64-slice scanner.
| Real tissue | ρ(g/cm3) | ρe(e–/g) | CT number |
|---|---|---|---|
| Adipose tissue | 0.95 | 0.95 | −65.06 |
| Blood | 1.06 | 1.05 | 52.19 |
| Brain | 1.04 | 1.03 | 35.27 |
| Breast | 1.02 | 1.01 | 5.79 |
| Cell nucleus | 1.00 | 0.99 | −1.16 |
| Eye lens | 1.07 | 1.05 | 51.02 |
| Gastrointestinal tract | 1.03 | 1.02 | 23.07 |
| Heart | 1.06 | 1.05 | 52.69 |
| Kidney | 1.05 | 1.04 | 41.59 |
| Liver | 1.06 | 1.05 | 59.67 |
| Lung (deflated) | 1.05 | 1.04 | 42.41 |
| Lung (inflated) | 0.26 | 0.26 | −741.87 |
| Lymph | 1.03 | 1.03 | 27.16 |
| Muscle | 1.05 | 1.04 | 40.68 |
| Ovary | 1.05 | 1.04 | 43.88 |
| Pancreas | 1.04 | 1.03 | 32.08 |
| Cartilage | 1.10 | 1.08 | 92.03 |
| Red marrow | 1.03 | 1.02 | 15.00 |
| Yellow marrow | 0.98 | 0.98 | −36.13 |
| Skin | 1.09 | 1.08 | 75.00 |
| Spleen | 1.06 | 1.05 | 52.12 |
| Testis | 1.04 | 1.03 | 34.42 |
| Thyroid | 1.05 | 1.04 | 66.26 |
| Cortical bone | 1.92 | 1.78 | 1196.47 |
| Cranium | 1.61 | 1.52 | 773.60 |
| Femur | 1.33 | 1.28 | 429.94 |
| Humerus | 1.46 | 1.39 | 602.55 |
| Mandible | 1.68 | 1.58 | 868.09 |
| Ribs (2nd, 6th) | 1.41 | 1.35 | 515.24 |
| Ribs (10th) | 1.52 | 1.44 | 671.32 |
| Sacrum | 1.29 | 1.24 | 357.14 |
| Spongiosa | 1.18 | 1.15 | 229.14 |
| Vertebral (C4) | 1.42 | 1.35 | 550.14 |
| Vertebral (D6, L3) | 1.33 | 1.28 | 417.90 |
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