Table 2.
Correlation analysis between ultrasound features of fibroids and NPV ratio.
| Ultrasound features of fibroids | Examples | Mean ablation rate(%) | F value | P value | |
|---|---|---|---|---|---|
| Echo | 4.145 | 0.044 | |||
| Hyperechoic fibroids | 65 | 68.30 ± 14.07 | |||
| Hypo-/isoechoic fibroids | 59 | 62.87 ± 15.63 | |||
| Morphology | 5.621 | 0.019 | |||
| Round-shaped | 93 | 63.91 ± 15.04 | |||
| Elliptical/diffuse leaf-shaped | 31 | 71.15 ± 13.81 | |||
| Attenuation bands | 6.296 | 0.013 | |||
| Absence of attenuation bands | 63 | 62.46 ± 15.08 | |||
| Presence of attenuation bands | 61 | 69.09 ± 14.31 | |||
| Location | 1.128 | 0.327 | |||
| Anterior wall | 61 | 67.78 ± 12.16 | |||
| Lateral and fundal wall | 25 | 63.76 ± 17.76 | |||
| Posterior wall | 38 | 63.71 ± 17.08 | |||
| Type | 2.379 | 0.073 | |||
| Submucosal | 29 | 66.84 ± 13.90 | |||
| Intramural | 9 | 54.24 ± 16.39 | |||
| Subserosal | 41 | 68.42 ± 12.81 | |||
| Mixed | 45 | 64.83 ± 16.56 | |||
| Necrosis internally | 0.139 | 0.710 | |||
| Absence of necrosis | 118 | 65.83 ± 14.64 | |||
| Presence of necrosis | 6 | 63.49 ± 23.01 | |||
| Blood flow signal levels | 2.510 | 0.086 | |||
| 0 | 14 | 68.58 ± 15.53 | |||
| 1 | 45 | 61.78 ± 14.67 | |||
| 2 | 55 | 69.69 ± 10.97 | |||
| 3 | 10 | 57.64 ± 26.47 | |||
Differences are statistically significant at p < 0.05. NPV: non-perfused volume.