Table 2.
12–16 Months | 16–28 Months | 28–60 Months | ||
---|---|---|---|---|
Field of view (cm) | 17 × 17 × 14.4 | 18 × 18 × 15 | 20 × 20 × 15 | |
SPGR | TE/TR (ms) | 5.9 ms/12 ms | 5.4 ms/12 ms | 5.2 ms/11 ms |
Flip angles (degrees) | 2, 3, 4, 5, 7, 9, 11, 14 | 2, 3, 4, 5, 7, 9, 11, 14 | 2, 3, 4, 5, 7, 9, 12, 16 | |
Bandwidth (Hz/pixel) | 350 | 350 | 350 | |
Image matrix | 96 × 96 × 80 | 104 × 104 × 84 | 112 × 112 × 84 | |
IR-SPGR | TI/TE/TR (ms) | (600, 900) ms/5.9 ms/12 ms | (500, 850) ms/5.4 ms/12 ms | (500, 800) ms/5.2 ms/11 ms |
Flip angle (degrees) | 5 | 5 | 5 | |
Image matrix | 96 × 96 × 40 | 108 × 104 × 42 | 112 × 112 × 42 | |
bSSFP | TE/TR (ms) | 5.1 ms/10.2 ms | 5 ms/10 ms | 4.4 ms/9.8 ms |
Flip angles (degrees) | 9, 14, 20, 27, 34, 41, 56, 70 | 9, 14, 20, 27, 34, 41, 56, 70 | 9, 14, 20, 27, 34, 41, 56, 70 | |
Bandwidth (Hz/pixel) | 350 | 350 | 350 | |
Image matrix | 96 × 96 × 80 | 104 × 104 × 84 | 112 × 112 × 84 | |
High resolution IR-SPGR | Field of view (cm) | 17 × 17 × 14.4 | 18 × 18 × 15 | 20 × 20 × 15 |
TI/TE/TR (ms) | 950 ms/6.9 ms/16 ms | 950 ms/6.9 ms/16 ms | 950 ms/6.9 ms/16 ms | |
Flip angle (degrees) | 5 | 5 | 5 | |
Image matrix | 144 × 144 × 116 | 144 × 144 × 124 | 160 × 160 × 124 |