Table 2.
Maximum temperature changes at each catheter tip, for each sequence during 3T-MRI
| MRI sequence | PiCCO catheter size | |||
|---|---|---|---|---|
| 5F/20 cm | 4F/16 cm | 3F/7 cm | Reference | |
| ΔTmax (°C) | ΔTmax (°C) | ΔTmax (°C) | ΔTmax (°C) | |
| Center of the scanner bore | ||||
| T1 VIBE |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
0.0 (0.0) [0.0–0.0] |
0.1 (0.0) [0.0-0.1] |
| T2 TSE |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
| T2 HASTE |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
| TRUFI |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
| pcASL |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0–0.0] |
| Mod. TRUFI |
0.2 (0.1) [0.0-0.2] |
0.2 (0.1) [0.0-0.2] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.0-0.1] |
| Off-center position | ||||
| T1 VIBE |
0.1 (0.0) [0.1–0.1] |
0.0 (0.0) [0.0–0.0] |
0.0 (0.0) [0.0–0.0] |
0.1 (0.0) [0.1–0.1] |
| T2 TSE |
0.3 (0.1) [0.1–0.3] |
0.2 (0.1) [0.0-0.2] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.1–0.1] |
| T2 HASTE |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.1–0.1] |
0.3 (0.1) [0.0-0.3] |
| TRUFI |
0.2 (0.0) [0.1–0.2] |
0.1 (0.0) [0.1–0.1] |
0.1 (0.0) [0.0-0.1] |
0.3 (0.1) [0.1–0.3] |
| pcASL |
0.2 (0.1) [0.1–0.3] |
0.1 (0.1) [0.0-0.2] |
0.1 (0.0) [0.1–0.2] |
0.2 (0.1) [0.1–0.3] |
| Mod. TRUFI |
0.2 (0.1) [0.0-0.2] |
0.2 (0.1) [0.0-0.2] |
0.1 (0.0) [0.0-0.1] |
0.1 (0.0) [0.1–0.1] |
Results are presented as mean(SD)[range]. clinical routine MR pulse sequences; VIBE Volumetric Interpolated Breath-hold Examination, TSE Turbo Spin Echo, HASTE Half-fourier Acquisition Single-shot Turbo spin Echo, TRUFI True Fast Imaging with steady-state free precession, pcASL pseudo-continuous Arterial Spin Labeling, modified TRUFI worst-case condition energy deposition