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Electromagnetic frequencies and human tissue penetration77.
| Frequency | Depth of Penetration (cm) into various tissues | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Skin (Dry) | Fat | Muscle | Skeletal System | Nervous System | |||||||||
| (Bone) | CNS | Peripheral | |||||||||||
| Cancellous | Cortical | Marrow | Dura | Cerebellum | Gray Matter | White Matter | Spinal Cord | CSF | Nerve | ||||
| 64 MHz | 13.5 | 45.6 | 9.1 | 21.6 | 40.0 | 72.4 | 9.0 | 9.8 | 12.1 | 17.0 | 15.1 | 4.8 | 15.1 |
| 100 MHz | 10.5 | 40.0 | 7.7 | 18.1 | 34.3 | 62.1 | 7.3 | 7.6 | 9.7 | 13.6 | 12.4 | 3.9 | 12.4 |
| 918 MHz | 4.0 | 24.2 | 4.2 | 7.1 | 13.0 | 30.7 | 3.7 | 3.0 | 4.1 | 5.6 | 5.3 | 1.9 | 5.3 |
