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Attenuation coefficients of various media or tissues.
| Medium/Tissue | Attenuation Coefficient: dB/cm at 1 MHz |
|---|---|
| Water | 0.0022 |
| Blood | 0.15 |
| Skin | 0.35 |
| Spleen | 0.40 |
| Liver | 0.50 |
| Adipose Tissue | 0.63 |
| Heart | 0.52 |
| Breast | 0.75 |
| Skeletal muscles: Perpendicular fibers Parallel fibers |
0.96 1.40 |
| Kidney | 1.00 |
| Connective Tissue | 1.57 |
| Air | 7.50 |
| Bone | 15.00 |
| Lung | 40.00 |
