Table II.
Tissue displacement width, tracking beam width and the ratio of displacement width to tracking width (Disp, Track, Displ:Track, respectively) for the 1.5D ARFI and the conventional 1D array. The 1.5D ARFI array has a 9 fold increase in Dy and a 1.2 fold increase in Dx as compared to the conventional 1D array. For comparison, the ratio of pushing beam width to tracking beam width is also included.
| Transducer | Direction | Displ (mm) | Track (mm) | Displ: Track (Di) | Push:Track |
|---|---|---|---|---|---|
| Conventional 1D | Lateral | 6.4 | 0.25 | 25.9 | 1.5 |
| Elevation | 10.3 | 5.4 | 1.9 | 1.2 | |
| 1.5D ARFI | Lateral | 8.1 | 0.25 | 32.9 | 2.9 |
| Elevation | 17.7 | 1.0 | 17.8 | 13.2 |