TABLE I.
Average g-factors at different reduction factors calculated for a primary 8 channel array (8ch 1st) and a 16-channel mixed primary and 2nd harmonic resonator array (16ch mix). The calculation was based on human head images acquired from each resonant element at sagittal plane. With an easy upgrade of a conventional 8 channel primary microstrip array, the g-factor was significantly improved, thus the improved parallel imaging performance would be expected.
| Reduction Factor (R) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8ch 1st | 1.1 | 1.22 | 1.45 | 1.99 | 3.54 | 8.18 | 109.82 | * | * | * | * | * | * | * | * |
| 16ch mix | 1.03 | 1.06 | 1.12 | 1.19 | 1.29 | 1.43 | 1.67 | 2.03 | 2.66 | 3.58 | 4.77 | 7.44 | 10.47 | 17.66 | 1096 |
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