Table 1 Temperature measurements The temperature increase for non-circulated pig myocardium during pulsed ultrasound exposure. Temperature was measured every 0.5-second during 1 hour and 27 min. Temperature at different time interval is presented as mean ± standard deviation °C. Differences in temperature between the exposed myocardium and surrounding water bath are also shown.
Inside water bath | Inside heart muscle | Difference degrees C | |
|---|---|---|---|
0.5 sec/intervals | Mean ± SD | Mean ± SD | |
5 min steady state | 36.8 ± 0.12 | 36.8 ± 0.03 | 0.0 |
During first 2 min US | 36.7 ± 0.12 | 36.9 ± 0.05 | 0.2 |
During first 5 min US | 36.8 ± 0.12 | 37.0 ± 0.07 | 0.2 |
During first 10 min US | 36.8 ± 0.12 | 37.1 ± 0.08 | 0.3 |
10–20 min US | 36.7 ± 0.11 | 37.2 ± 0.03 | 0.4 |
20–40 min US | 36.7 ± 0.10 | 37.2 ± 0.03 | 0.5 |
40–60 min US | 36.7 ± 0.10 | 37.1 ± 0.03 | 0.5 |
20 min after US termination (2 min) | 36.6 ± 0.12 | 36.7 ± 0.03 | 0.1 |