Table 1.
Clinical and radiological data
| Indicator | Result |
|---|---|
| number of cases | 23 |
| male | 17 |
| female | 6 |
| age at surgery (years) | 62.09 ± 11.80 |
| blood loss (ml) | 190.91 ± 181.41 |
| operative time (min) | 196.18 ± 18.66 |
| preoperative mJOA score | 11.57 ± 2.67 |
| mJOA score at postoperative 6 months | 15.39 ± 1.50* |
| the RR of mJOA score (%) | 71.11 ± 22.81 |
| Rgray of IOUSI | 2.12 ± 0.42 |
| correlation coefficient of Rgray and the RR of mJOA score | −0.77 (P = 0.004) |
mJOA score modified Japanese Orthopaedic Association score, RR recovery rate, Rgray the gray value ratio, IOUSI intraoperative ultrasound imaging, SCR signal change rate
*: compared with the preoperative mJOA score, P < 0.001