Table 1: Segmental Distribution of Effective Doses in Epidural und Periradicular Lumbar Injections
Procedure |
Number of Injections n |
Mean Effective Dose mSv |
Confidence Interval 95% |
Median eff. Dose mSv |
Standard Deviation |
EDU L 1/2 |
9 |
1.04 |
0.62-1.46 |
0.87 |
0.55 |
EDU L 2/3 |
142 |
1.31 |
1.21-1.40 |
1.14 |
0.57 |
EDU L 3/4 |
295 |
1.36 |
1.28-1.45 |
1.11 |
0.74 |
EDU L 4/5 |
563 |
1.37 |
1.30-1.44 |
1.13 |
0.80 |
EDU L 5/s1 |
277 |
1.29 |
1.21-1.38 |
1.13 |
0.70 |
Radix L1 |
0 |
- |
- |
- |
- |
Radix L2 |
22 |
1.25 |
1.05-1.45 |
1.17 |
0.46 |
Radix L3 |
44 |
1.3 |
1.11-1.48 |
1.14 |
0.61 |
Radix L4 |
131 |
1.27 |
1.18-1.36 |
1.17 |
0.50 |
Radix L5 |
322 |
1.46 |
1.37-1.54 |
1.22 |
0.81 |
Radix S1 |
65 |
1.33 |
1.17-1.50 |
1.11 |
0.68 |