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Comparison of T1 Value Shortening Between Mn- and Gd-Enhanced MRI (x̄ ± s) (milliseconds)
| Tumor Size | Mn-Enhanced | Gd-Enhanced | t | P |
|---|---|---|---|---|
| 5 mm | 712.59 ± 38.15 | 198.87 ± 22.24 | 40.477 | <.001 |
| 10 mm | 463.68 ± 223.25 | 257.78 ± 149.95 | 2.519 | .053 |
| 15 mm | 565.45 ± 183.33 | 290.36 ± 122.07 | 3.210 | .051 |
Paired sample t test was used to compare the difference of T1 shortening between two agents in each size group. Significant difference was found in 5 mm-size group (t = 40.477, p < 0.001).
