23 June 1993 Correction of gross patient motion artifacts in positron emission tomography
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Abstract
Patient motion during data acquisition in tomographic radionuclide imaging can cause severe artifacts in the reconstructed images. Assuming that patient motion can be measured and recorded using a motion monitoring device, we consider the problem of reducing the image artifacts by incorporating the motion information in the reconstruction process. The feasibility of the concept is tested using mathematical phantoms. Emission data are simulated while the phantom undergoes motion within a plane, both abrupt, from one position to another, and gradual. The simulated emission data are reconstructed using iterative statistical reconstruction methods incorporating the motion information. Severe artifacts occur when the data are reconstructed without motion correction. They are more pronounced in sudden gross motions as compared to the continuous motions. Improved reconstructions are obtained when the motion correction is applied. The correction is faster and more accurate for the sudden motions.
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Roger R. Fulton, Roger R. Fulton, Brian F. Hutton, Brian F. Hutton, Michael Braun, Michael Braun, Babak A. Ardekani, Babak A. Ardekani, } "Correction of gross patient motion artifacts in positron emission tomography", Proc. SPIE 2035, Mathematical Methods in Medical Imaging II, (23 June 1993); doi: 10.1117/12.146598; https://doi.org/10.1117/12.146598
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