SPECT Image Reconstruction

Single Photon Emission Computed Tomography (SPECT) can provide valuable information about organ function. Filtered back-projection is a common reconstruction algorithm, but it is only applicable to single slices. Modern fully 3D iterative reconstruction algorithms provide enhanced image reconstruction for the whole image volume, but this comes at the expense of high computational effort. Grid technology will allow wider use of such reconstruction algorithms.

Standard reconstruction using filtered backprojection	3D reconstruction showing enhanced resolution and contrast, and removal of streak artefacts
Figure 1: Comparison of filtered back projection and 3D reconstruction.