Table 4.
Ultrasound properties at 22°C for the components of Uterine phantoms #1 and #2. Columns 4 and 5 were generated by curve-fitting data between 3 and 10 MHz using the relation α = α0fn where α0 and n are constants and f is the frequency.
| Tissue Type | Density (g/mL) |
Prop. Speed (m/s) |
Attenuation coefficient | Atten. coeff. ÷ freq. at 7 MHz (dB/cm/MHz) |
||
|---|---|---|---|---|---|---|
| α0 (dB cm−1 MHz−n) | n | |||||
| Uterine Phantom #1 |
Myometrium and Cervix | 0.97 ± 0.005 | 1520 ± 1 | 0.20 ± 0.04 | 1.40 ± 0.08 | 0.41 ± 0.02 |
| Fat | 0.94 ± 0.005 | 1486 ± 1 | 0.50 ± 0.06 | 1.13 ± 0.05 | 0.61 ± 0.02 | |
| Fibroid | 1.01 ± 0.005 | 1581 ± 1 | 0.052 ± 0.015 | 2.0 ± 0.1 | 0.34 ± 0.02 | |
| Uterine Phantom #2 |
Myometrium and Cervix |
0.98 ± 0.005 | 1524 ± 1 | 0.19 ± 0.04 | 1.43 ± 0.09 | 0.48 ± 0.02 |
| Fat | 0.94 ± 0.005 | 1493 ± 1 | 0.34 ± 0.09 | 1.25 ± 0.11 | 0.59 ± 0.02 | |
| Fibroid | 1.01 ± 0.005 | 1569 ± 1 | 0.073 ± 0.017 | 1.91 ± 0.1 | 0.45 ± 0.02 | |
| Endometrial polyp | 0.95 ± 0.005 | 1492 ± 1 | 0.28 ± 0.05 | 1.28 ± 0.08 | 0.50 ± 0.02 | |