Figure 1. Rapid 3D imaging sequence in the sample coordinate system (x′, y′, z′).
Multiple 2D projection images are acquired with electronic translation of the FFL. These images are taken sequentially at various angles (θ1, θ2, …, θN) using mechanical rotation of the sample around the z-axis with a rotary stage. Accelerated imaging via FFL motion with time-varying slow shift magnetic fields enables acquisition of rapid tomographic 3D images in < 2 min across a relatively large FOV.