Cohort and procedural demographics
| Demographics | |
|---|---|
| Mean age (range) | 57 (12–96) |
| Sex | Male = 75 |
| Female = 104 | |
| Level of gold fiducial marker placement | C7 = 1 |
| T1 = 5 | |
| T2 = 5 | |
| T3 = 14 | |
| T4 = 14 | |
| T5 = 18 | |
| T6 = 21 | |
| T7 = 26 | |
| T8 = 21 | |
| T9 = 15 | |
| T10 = 19 | |
| T11 = 15 | |
| T12 = 7 | |
| L3 = 1 | |
| L4 = 1 | |
| Method | CT = 36 |
| FL = 143 | |
| Mean radiation dose (range) (mGy) | 183.43 (13–805) |
| Mean FL time (range) (min) | 3.92 (0.4–15.2) |
| No. of wrong-level surgeries | 0 |
| No. of different radiologists who performed a gold fiducial marker placement | 13 |
| Mean BMI (range) | 28.9 (16.1–55.8) |
| Osteoporosis diagnosis | No = 159 |
| Yes = 20 | |
| Trainee present? | No = 107 |
| Yes = 72 | |
| Mean procedure duration (range) (min)a | 51.9 (20–114) |
| Mean No. of days when operation was performed after placement (range) | 3.6 days (0–92) |
Note:—BMI indicates body mass index.
↵a Entry of the room by physician to room exit time.