Table 1. Needle insertion and CED results for the evaluated needle insertion speeds.
Insertion speed | 0.2 mm/s | 2 mm/s | 10 mm/s |
Hole area * (mm2) | 0.0105±0.007 | 0.0149±0.009 | 0.0197±0.010 |
Diameter * (mm) | 0.107±0.042 | 0.137±0.047 | 0.152±0.046 |
Perimeter * (mm) | 0.383±0.145 | 0.483±0.153 | 0.536±0.150 |
Average pre-stress (Pa) | 351.7±92.4 | 266.7±109.3 | 240.0±125.1 |
Backflow percentage ** (%) | 17.07±11.7 | 27.7±11.6 | 39.4±10.4 |
Backflow distances ** (mm) | 2.82±0.17 | 2.86±0.12 | 2.80±0.14 |
Average values ±1 standard deviation are presented.
*average for 10 and 25 min fixation time points.
**average for 0.5, 1.0 and 2.0 µL/min flow rates.