Skip to main content
. 2014 Apr 28;9(4):e94919. doi: 10.1371/journal.pone.0094919

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.