Table 2 Induced temperature increase, ΔT, of the cobalt-chrome (CoCr stem with the ceramic head at different lateral offsets and under circular versus the elliptic transmission
From: 3-T MRI implant safety: heat induction with new dual-channel radiofrequency transmission technology
Lateral offset from magnetic axis (cm) | RF transmission polarization mode | B1 + rms (μT) | ΔT (°C) | wbSAR (W/kg) |
|---|---|---|---|---|
20 | Circular | 3.248 | 6.2 | 1.042 |
Elliptic | 3.335 | 1.5 | 0.75 | |
16 | Circular | 3.248 | 4.2 | 1.042 |
Elliptic | 3.335 | 1.2 | 0.75 | |
12 | Circular | 3.248 | 2 | 1.042 |
Elliptic | 3.335 | 0.5 | 0.75 | |
8 | Circular | 3.248 | 0.9 | 1.042 |
Elliptic | 3.335 | 0.4 | 0.75 | |
4 | Circular | 3.248 | 0.4 | 1.042 |
Elliptic | 3.335 | 0.3 | 0.75 |