Table 2 Scoring standards for puncture performance
Score | Standards |
|---|---|
0 | Unsuccessful needle insertion |
1 | Successful puncture requiring > 4 needle repositions for single lesion |
2 | Successful puncture requiring 3–4 needle repositions for single lesion |
3 | Successful puncture requiring 1–2 needle repositions for single lesion |
4 | Successful first puncture |