Table 3 Distribution of measurements of the flow volumes, mean velocity, and peak velocity for 2D flow and two 4D phase-contrast sequences (GRAPPA2 and k-t-GRAPPA5) with different encoded velocities (Venc)
From: Validation of two accelerated 4D flow MRI sequences at 3 T: a phantom study
Venc, cm/s | Pump reference | 2D flow PC | 4D flow PC GRAPPA2 | 4D flow PC k-t-GRAPPA5 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flow volume, L/min | Mean velocity, cm/s | Peak velocity, cm/s | Flow volume, L/min | Mean velocity, cm/s | Peak velocity, cm/s | Flow volume, L/min | Mean velocity, cm/s | Peak velocity, cm/s | Flow volume, L/min | Mean velocity, cm/s | Peak velocity, cm/s | |
140 | 7.7 | 101 | 101 | 7.8 | 103 | 135 | 7.6 | 100 | 126 | 7.8 | 103 | 133 |
160 | 7.7 | 101 | 101 | 7.8 | 103 | 135 | 7.6 | 100 | 126 | 7.8 | 103 | 131 |
190 | 7.7 | 101 | 101 | 7.8 | 102 | 138 | 7.5 | 99 | 125 | 7.9 | 103 | 132 |
220 | 7.7 | 101 | 101 | 7.8 | 102 | 140 | 7.6 | 99 | 129 | 7.9 | 104 | 133 |
250 | 7.7 | 101 | 101 | 7.8 | 103 | 143 | 7.6 | 100 | 128 | 8.0 | 105 | 136 |
280 | 7.7 | 101 | 101 | 7.9 | 103 | 126 | 7.7 | 102 | 127 | 8.0 | 106 | 137 |
350 | 7.7 | 101 | 101 | 7.9 | 102 | 138 | 7.8 | 103 | 131 | 7.8 | 104 | 138 |