Table 2.
Qualitative and quantitative analyses results of two contrast-enhanced MRA.
| Gadobutrol | Gd-DTPA | p | |||||
|---|---|---|---|---|---|---|---|
| Reader 1 | Reader 2 | Average | Reader 1 | Reader 2 | Average | Average | |
| Qualitative analyses | |||||||
| Large vessels | 21.28 ± 2.22 | 20.68 ± 2.35 | 20.98 ± 2.21 | 20.08 ± 2.09 | 19.95 ± 2.43 | 20.01 ± 2.18 | 0.085 |
| Small vessels | 6.13 ± 1.16 | 5.93 ± 1.10 | 6.03 ± 1.03 | 5.08 ± 1.66 | 5.48 ± 1.83 | 5.28 ± 1.67 | 0.028 |
| Minute blood vessels | 3.45 ± 1.15 | 3.38 ± 1.28 | 3.41 ± 1.18 | 2.68 ± 1.47 | 2.55 ± 1.47 | 2.61 ± 1.40 | 0.007 |
| Quantitative analyses for large vessels | |||||||
| SNR | 966.47 ± 318.18 | 994.07 ± 297.43 | 991.66 ± 318.11 | 907.18 ± 321.41 | 947.19 ± 305.39 | 927.18 ± 300.42 | 0.116 |
| CNR | 738.37 ± 327.26 | 829.22 ± 302.37 | 772.26 ± 316.16 | 796.47 ± 318.18 | 791.66 ± 318.11 | 795.32 ± 310.68 | 0.132 |
MRA, magnetic resonance angiography; SNR, signal-to-noise ratio; CNR, contrast-to-noise ratio.