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Ratio of Maximum Local to Whole-Head Average SAR for a Human Head Model in a Volume Coil at Several Frequencies Compared to the Ratios in the Regulatory Limits
| Frequency | SAR1g/SARW | SAR10g/SARW |
|---|---|---|
| 64 MHz | 6.1 | 3.4 |
| 128 MHz | 5.2 | 3.2 |
| 200 MHz | 5.6 | 3.5 |
| 300 MHz | 5.4 | 4.1 |
| 340 MHz | 6.7 | 5.0 |
| 400 MHz | 6.0 | 4.4 |
| FDA limits | 2.7 | – |
| IEC limits | – | 3.12 |
FDA = Food and Drug Administration, IEC = International Electrotechnical Commission.
