Table 3. Quantitative analyses of the three sequences for imaging intracranial tumors greater than 5 mm in diameter.
| Parameters | MPRAGE | PETRA | DANTE-SPACE |
|---|---|---|---|
| SNRWM | 33.04±12.16 | 49.00±32.71 | 67.13±26.87 |
| SNRGM | 26.15±9.88 | 34.61±9.83 | 63.65±23.02 |
| CNRlesion/GM | 25.93±20.86 | 19.52±13.97 | 61.80±115.69 |
| CNRlesion/WM | 19.63±24.84 | 15.85±13.82 | 89.11±194.83 |
| CNRWM/GM | 8.18±21.50 | 7.53±2.82 | −4.56±4.51a |
a, signal intensities of WM were lower than those of GM in DANTE-SPACE, so this value is shown as a negative number. MPRAGE, magnetization-prepared rapid acquisition with gradient echo; PETRA, pointwise encoding time reduction with radial acquisition; DANTE-SPACE, delay alternating with nutation for tailored excitation sampling perfection with application-optimized contrasts using different flip angle evolution; SNR, signal-to-noise ratio; CNR, contrast-to-noise ratio; WM, white matter; GM, gray matter.