Objective; To compare the dependence of signal attenuation on temperature and time caused by the diffusion movements in inhomogeneous and linear gradient magneticfield.
目的:比较非理想均匀磁场和线性梯度磁场中扩散运动引起的信号衰减对温度、时间的依赖性。
2
The experiment quantitatively verifies the existence of convection flows of gas induced by the gradient magneticfield, furthermore the convection flow promotes the combustion in diffusion flames.
实验定量地验证了梯度磁场可以诱导气体对流的发生,从而进一步推进扩散火焰燃烧反应。
3
Purpose:To evaluate the value of low magnetic-field intensity MR diffusion-weighted imaging(DWI) incerebral ischemia in early stage.