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Main research indicators.
| Index | Fluoroscopic | Ultrasound | P value |
|---|---|---|---|
| Needle angle adjustment/time | 4 ± 1 | 1 ± 1 | P < 0.05 |
| Operating time/min | 18 ± 2 | 9 ± 2 | P < 0.05 |
| Radiation exposure | depending on the number of fluoroscopic | None | – |
Notes: The continuous measurement data were expressed by mean ± standard deviation (x ± s).
The amount of X-ray radiation is determined by the number of fluoroscopy, and the ultrasonic equipment has no ionizing radiation.
