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| Techniques | ABUS | HHUS |
|---|---|---|
| 3D view | 3D reconstruction | - |
| FOV (cm) | 15 × 17 | 4–6 × 4–6 |
| Scan direction | Transverse | Transverse, longitudinal, radial, antiradial |
| Probe (MHz) | 5–14 (average 10 MHz) | 5–17, 18 |
| Elastography, color Doppler | - | Available |
| Focal zone | Wide and fixed | Manual setting |
| Coupling agent | Lotion | Gel |
FOV = field of view, 3D = three-dimensional
