Interactions of collimation, sampling and filtering on SPECT spatial resolution

The major factors which affect the spatial resolution of single-photon emission computer tomography (SPECT) include collimation, sampling and filtering. The relationship between these factors and their effects on the projection data is formulated. Numerical calculations were made using commercially available SPECT systems and imaging parameters. The results provide a guide for selection of the collimator-detector design, the imaging, and the reconstruction parameters to avoid unnecessary spatial resolution degradation and aliasing artifacts in the reconstructed image. The understanding will help in the evaluation of different SPECT systems under specific imaging conditions

Duke Scholars

Author Ronald J. Jaszczak Radiology