Table 3.
Quantitative measurements and inter-reader ICC comparison between conventional and SMS sequences
| Parameters | Quantitative measurement | P | ICC (95%CI) for 3 readers | |||
|---|---|---|---|---|---|---|
| CON | SMS | P | CON | SMS | ||
| ADC ‡ | 1.17 ± 0.23 | 1.13 ± 0.19 | < 0.001 ** | 0.879 (0.873–0.882) | 0.877 (0.871–0.891) | |
| D † | 1.02 ± 0.15 | 1.01 ± 0.15 | 0.555 | 0.817 (0.792–0.832) | 0.836 (0.803–0.854) | |
| D* ‡ | 24.69 ± 6.02 | 24.93 ± 5.93 | 0.231 | 0.804 (0.779–0.837) | 0.811 (0.782–0.843) | |
| f ‡ | 30.23 ± 4.46 | 27.06 ± 3.99 | 0.003 ** | 0.719 (0.615–0.794) | 0.702 (0.641–0.778) | |
| MK † | 0.81 ± 0.14 | 0.82 ± 0.13 | 0.123 | 0.822 (0.802–0.851) | 0.821 (0.793–0.847) | |
| MD ‡ | 1.62 ± 0.24 | 1.62 ± 0.25 | 0.767 | 0.815 (0.789–0.843) | 0.823 (0.805–0.855) | |
ADC, D, MD, and D* are measured in × 10⁻³ mm²/s
f represents the perfusion fraction expressed as a percentage
†, Paired t test; ‡, Wilcoxon signed-rank test; *, P-value < 0.05; **, P-value < 0.01
CON, conventional; SMS, simultaneous multislice; ICC, intraclass correlation coefficient; CI, confidence interval; ADC, apparent diffusion coefficient; D, true diffusion coefficient; D*, perfusion-related diffusion; f, perfusion fraction; MK, mean kurtosis; MD, mean diffusivity