Table 2.
Observed injected volumes and calculated cumulative percentage reaching the medial aspect of the superior pedicle of the corresponding level of injection in two groups.
| Volume (mL) | Subjects (n) | Percentage | Cumulative percentage |
|---|---|---|---|
| RV | |||
| 0.1 | 3 | 5.17 | 5.17 |
| 0.2 | 11 | 18.97 | 24.14 |
| 0.3 | 12 | 20.69 | 44.83 |
| 0.4 | 9 | 15.52 | 60.34 |
| 0.5 | 10 | 17.24 | 77.59 |
| 0.7 | 7 | 12.07 | 89.66 |
| 0.8 | 3 | 5.17 | 94.83 |
| 1 | 2 | 3.45 | 98.28 |
| 1.2 | 1 | 1.72 | 100.00 |
| Never∗ | 0 | 0.00 | 100.00 |
| Total | 58 | 100.00 | |
| LV | |||
| 0.1 | 8 | 13.33 | 13.33 |
| 0.2 | 14 | 23.33 | 36.67 |
| 0.3 | 18 | 30.00 | 66.67 |
| 0.4 | 11 | 18.33 | 85.00 |
| 0.6 | 3 | 5.00 | 90.00 |
| 0.7 | 5 | 8.33 | 98.33 |
| 0.8 | 1 | 1.67 | 100.00 |
| Never∗ | 0 | 0.00 | 100.00 |
| Total | 60 | 100.00 | |
RV: group of raw viscosity; LV: group of low viscosity. ∗Cases that do not reach the landmark fluoroscopically despite any amount.