Table 7.
Aerogel imaging classifications and image characteristics based upon the optimal frequency, echogenicity.
| Aerogel Type | Imaging Frequency (MHz) |
Optimal Frequency (MHz) |
Echogenicity | Image Characteristics | Impedance Mismatch (%) |
|
|---|---|---|---|---|---|---|
| Subcutaneous | Submuscular | |||||
| X-silica | 6.5–13.4 | 13.4 MHz | Hypoechoic | Least Hyperechoic | Distinct linear boundary | 92.03 |
| X-silica-La2O2S:Eu | 6.5–13.4 | 13.4 MHz | Hypoechoic | Least Hyperechoic | Distinct linear boundary | 90.28 |
| SMPU-Mix-14 | 6.5–13.4 | 11 MHz | Hyperechoic | Moderately Hyperechoic | Irregular boundary | 98.33 |
| SMPU-Mix-18 | 6.5–13.4 | 11 MHz | Hyperechoic | Moderately Hyperechoic | Irregular boundary | 98.23 |
| BRF-CA | 6.5–13.4 | 13.4 MHz | Hyperechoic | Hyperechoic | Waterfall appearance | 97.16 |
| ARF-CA | 6.5–13.4 | 13.4 MHz | Hyperechoic | Hyperechoic | Waterfall appearance | 97.12 |
| X-Ca-Alg-2 | 6.5–13.4 | 11 MHz | Isoechoic | Strongly Hyperechoic | Irregular boundary | 98.03 |
| X-Ca-Alg-1 | 6.5–13.4 | 11 MHz | Isoechoic | Strongly Hyperechoic | Irregular boundary | 97.97 |