Table 1.
Evaluation of contrast ratio (CR), contrast-to-noise ratio (CNR) and generalized contrast-to-noise ratio (gCNR) after imaging with the central array only or with all three arrays on the commercial phantom.
| 1 array | 3 arrays | 3 arrays + SVD | |
|---|---|---|---|
| Cyst 55 mm | |||
| Contrast (dB) | − 25.5 | − 22.7 | − 24.2 |
| CNR | 1.80 | 1.73 | 1.78 |
| gCNR | 0.96 | 0.96 | 0.96 |
| Cyst 80 mm | |||
| Contrast (dB) | − 25.2 | − 22.9 | − 24.0 |
| CNR | 1.79 | 1.79 | 1.81 |
| gCNR | 0.98 | 0.97 | 0.97 |
| Cyst 110 mm | |||
| Contrast (dB) | − 12.2 | − 15.6 | − 16.1 |
| CNR | 1.27 | 1.65 | 1.69 |
| gCNR | 0.69 | 0.88 | 0.88 |
Quantification is done on cyst-like structures at depths of 55, 80 and 110 mm for 91 PWs (− 30° to 30°).