Table 7.
DAP, AK, and fluoroscopy time regarding AVM embolization
| Variable | Mean DAP (Gy·cm2) | AK (mGy) | FT (min) |
|---|---|---|---|
| Sex | |||
| Male (n=42) | 325±199 | 4,182±3,356 | 79±51 |
| Female (n=36) | 270±162 | 3,080±2,220 | 75±49 |
| P-value | 0.195 | 0.097 | 0.757 |
| Location of AVM | |||
| Anterior (n=59) | 288±175 | 3,636±3,065 | 76±48 |
| Posterior (n=19) | 337±208 | 3,853±2,623 | 78±56 |
| P-value | 0.302 | 0.775 | 0.927 |
| Size of Nidus (cm) | |||
| <3 cm (A) | 286±175 | 3,390±2,658 | 66±42 |
| 3–6 cm (B) | 339±207 | 4,667±3,671 | 100±59 |
| >6 cm (C) | 325±233 | 3,086±2,205 | 105±62 |
| P-value | A vs. B: P=0.538 | A vs. B: P=0.242 | A vs. B: P=0.038* |
| B vs. C: P=0.992 | B vs. C: P=0.660 | B vs. C: P=0.984 | |
| A vs. C: P=0.932 | A vs. C: P=0.983 | A vs. C: P=0.376 | |
| Purpose of embolization | |||
| Preoperative (O) (n=21) | 296±167 | 2,975±1,842 | 85±52 |
| Pre radiosurgery (R) (n=21) | 193±120 | 2,396±1,424 | 47±21 |
| Curative (C) (n=36) | 364±198 | 4,826±3,613 | 92.9±55 |
| P-value | O vs. R: P=0.140 | O vs. R: P=0.774 | O vs. R: P=0.045* |
| R vs. C: P=0.002* | R vs. C: P=0.005* | R vs. C: P=0.003* | |
| O vs. C: P=0.323 | O vs. C: P=0.043* | O vs. C: P=0.843 |
DAP, dose-area product; AK, air-kerma; FT, fluoroscopic time; AVM, arteriovenous malformation.
*
Remained significant.