Table 2.
CNR [dB] of optoacoustic images of gold wires in water (top) and scattering medium (bottom). CNR was computed with the avg wire signal. The error was calculated from the standard error of the averaged wire signal.
|
Position from focal plane |
||||
|---|---|---|---|---|
| Algorithm | f+0 μm | f+250 μm | f+500 μm | f+750 μm |
| Raw image | 31.1±0.08 | 27.6±0.12 | 23.9±0.17 | 21.9±0.20 |
| 21.3±0.11 | 19.7±0.11 | 14.6±0.17 | 11.9± 0.21 | |
| DAS | 34.5±0.08 | 36.0±0.06 | 35.1±0.06 | 34.4±0.06 |
| 22.8±0.09 | 28.0±0.09 | 28.8±0.07 | 28.8±0.07 | |
| FD | 36.6±0.06 | 36.3±0.06 | 35.0±0.06 | 34.5±0.06 |
| 30.0±0.06 | 29.7±0.06 | 29.2±0.07 | 30.2±0.05 | |
| DAS+CF | 70.9±0.21 | 71.2±0.14 | 63.5±0.13 | 59.2±0.11 |
| 33.9±0.15 | 45.8±0.12 | 46.4±0.11 | 46.6±0.11 | |
| FD+CF | 81.3±0.14 | 76.3±0.13 | 71.2±0.12 | 64.6±0.11 |
| 48.7±0.12 | 48.6±0.11 | 47.9±0.10 | 48.5±0.11 | |