Table Based Gridded Reconstruction

Brian Dale’s research focus is in the area of non-rectilinear k-space acquisition techniques, specifically spiral trajectories, radial trajectories, and their variants. His paper, "A Rapid Look-Up Table Method for Reconstructing MR Images from Arbitrary K-Space Trajectories" (2001 IEEE TMI, 20(3): 207-217), describes a rapid implementation of the popular convolution-based gridding method for reconstructing such images. This reconstruction method enables the acquisition and display of up to 16 images per second on a Siemens Sonata 1.5T MRI system. He is currently working on developing k-space trajectories that will result in the best possible image quality in the shortest possible acquisition time.

Figure 1: Image acquired using a 9-interleave spiral trajectory. It was reconstructed and displayed fluoroscopically using the look-up table method of convolution-based gridding-reconstruction implemented on a Siemens 1.5T Sonata.