TABLE I.
PARAMETERS FOR THE TRAINING NETWORK
| Category/Function | Parameters | Value/Range |
|---|---|---|
|
| ||
| Photoacoustic data | Transducer width | 15 mm |
| Transducer acoustic focus | 40 mm | |
| Transducer bandwidth | 65% | |
| Sampling rate | 9 MHz | |
| Transducer central frequency | 2.25 MHz | |
| Ultrasonic wavelength | 0.68 mm | |
| Transducer scanning step size | 0.1 mm | |
|
| ||
| Training image | Image numbers | 6400 |
| Signal to Noise Ratio | 6, 9, 12 dB, and noise free | |
| Axial samples | 256 pixels (50mm) | |
| Elevation samples | 256 pixels (50mm) | |
|
| ||
| Training | Batch size | 8 |
| Learning rate | 0.001 | |
| Training iterations | 41,490 | |
| Training time | 1.7 hours | |