| Focus |
Optimal resolution for the entire left ventricle is achieved by setting at the mitral valve level, reducing swirling artifacts at the apex; if the apical resolution is poor, adjust to improve apical visualization. |
| Mechanical index |
Low Mechanical Index (MI) Harmonic Imaging: 0.25-0.3. |
|
Very Low Mechanical Index Multipulse Imaging: 0.1-0.2. |
| Gain/time gain compensation |
Gain: 60%-70%, balancing imaging quality and signal-to-noise ratio, with slight increase in near-field TGC as needed. |
| Frame rate |
Frame rate generally 20-25 fps, can be increased to 25-30 fps for rapid heart rates. |
| Flash |
MI setting greater than 0.8, 5-6 frames at rest, 10-15 frames post-stress. |
