Table 2.
Resolution integral, characteristic resolution and depth of field measurements for each of the transducers
| Scanner | Transducers | Resolution integral, R | Characteristic resolution, DR (μm) | Depth of field, LR (mm) |
|---|---|---|---|---|
| Vevo 770 (tracking) | RMV 704 | 72 | 93 | 6.7 |
| Vevo 770 (mean, non-tracking) | RMV 704 | 25 | 132 | 3.3 |
| Vevo 2100 | MS550S | 56 | 188 | 10.5 |
| Vevo 2100 | MS550D | 55 | 197 | 10.9 |
| Diasus | L10-22 | 44 | 520 | 23 |
| iU22 | L15-7io | 72 | 600 | 43 |
| Diasus | L8-16 | 55 | 600 | 33 |
| iU22 | L17-5 | 78 | 630 | 49 |
| Vivid 5 | i13Lv | 35 | 720 | 25 |
| MicroMaxx | HFL38/13-6 | 57 | 840 | 48 |
Vevo 770 (mean, non-tracking) was the mean of three sets of measurements taken using the same Edinburgh Pipe Phantom over a period of 15 months. Vevo 770 (tracking) was calculated by tracking the vertical extent of each pipe through the phantom to simulate preclinical use. The results are ranked with respect to characteristic resolution such that those transducers with smallest characteristic resolution are at the top of the table.