what is gradient slew rate
Slew Rate. The gradient slew rate is the speed rate of ascent or descent of a gradient from zero to its maximum amplitude, either positive or negative. Which is the amplitude divided by the rise time in msec. Measured in mT/m/msec or T/m/sec.The shorter the rise time, the faster the gradients and therefore echo spacing.Gradients with a shorter echo spacing will have a better resolution and more slices per TR.itachi expanded its portfolio with the Echelon 1.5T. The MRI scanner combines a compact magnet and a scalable 8-channel RF system with high-performance gradients and slew rate to select short echo times, small field of views, high matrices and thin slices.