gradient pulse造句

例句与造句

1. Diffusion is measured by applying a gradient pulse to a magnetic field along a particular direction.
2. Another gradient pulse is applied in the same magnitude but with opposite direction to refocus or rephase the spins.
3. In addition, an unweighted volume is acquired under the same magnetic field without application of a gradient pulse.
4. where c is a parameter linked to the gradient pulse amplitude and time course ( similar to the b value ).
5. Usually these field gradients are pulsed, and it is the almost infinite variety of RF and gradient pulse sequences that gives MRI its versatility.
6. It's difficult to find gradient pulse in a sentence. 用gradient pulse造句挺难的
7. This " field gradient pulse " method was initially devised for NMR by Stejskal and Tanner who derived the reduction in signal due to the application of the pulse gradient related to the amount of diffusion that is occurring through the following equation:
8. where S _ 0 is the signal intensity without the diffusion weighting, S is the signal with the gradient, \ gamma is the gyromagnetic ratio, G is the strength of the gradient pulse, \ delta is the duration of the pulse, \ Delta is the time between the two pulses, and finally, D is the diffusion-coefficient.