Contrast enhancement in recurrent disk fragment and scar after IV injection of ionic and nonionic contrast media
| Location | Type of Contrast Medium | Enhancement at Time after Injection (min) | |||
|---|---|---|---|---|---|
| 5 | 25 | 40 | 50 | ||
| Ionic | 0.60 ± 0.10 | 0.68 ± 0.07 | 0.72 ± 0.07 | 0.70 ± 0.07 | |
| Disk | Nonionic | 0.58 ± 0.09 | 0.66 ± 0.08 | 0.71 ± 0.08 | 0.70 ± 0.08 |
| Ionic | 1.37 ± 0.26 | 1.15 ± 0.18 | 0.98 ± 0.17 | 0.90 ± 0.15 | |
| Scar | Nonionic | 1.04 ± 0.21 | 0.88 ± 0.15 | 0.83 ± 0.12 | 0.78 ± 0.11 |
* Enhancement is expressed as arithmetic mean ± SD (n = 20).