echo-planar imaging(EPI)須快速取樣,需要有high power gradients,因此EPI對梯度磁場之負載時段的要求最高。
Duty cycle is a percentage of time during the TR period that the gradient is permitted to be at maximum amplitude during an imaging sequence.
Duty cycle ↗ slew rate ↗ attainable slices ↘
60 何種磁振造影脈衝程序(pulse sequence)對梯度磁場之負載時段(..-阿摩線上測驗