Spect motion-correction

A system for generating motion-corrected images comprising:

• a reconstruction processor or engine which reconstructs projections along each of a plurality of projection directions into an image;
• an image memory which stores the reconstructed image;
• a motion-correction processor or generator including:
• a forward-projector which forward-projects the reconstructed image from the image memory along the projection directions as a series of forward-projections,
• a comparator which compares each forward-projection with a one of the projections along the same projection direction to generate a motion-correction,
• a motion-correction processor or generator which corrects each of the projections with the motion-correction to form motion-corrected projections;
• the reconstruction processor or engine further reconstructing the motion-corrected projections into a motion-corrected image which is stored in the image memory;
• and
• an image degrading factor correction or modeling processor or routine at least one of in or downstream from the forward projector to model to forward-projections for image degrading factors, as a part of the comparator, as a part of the motion correction processor, and integral with or upstream from the reconstruction processor to correct the projections for image degrading factors.

A system for generating motion corrected nuclear images, the system comprising:

• a projection memory which stores acquired nuclear projections;
• a reconstruction processor or engine which reconstructs the acquired projections into a motion-artifacted image;
• an image memory which stores the reconstructed image;
• an iterative motion-correction processor or engine which generates and iteratively refines a motion-correction model or vector, the reconstruction processor or engine reconstructing projections corrected with the motion-correction model or vector to generate one or more motion-corrected images which are stored in the image memory;
• and
• an image degrading factor processor or routine integral with or upstream of the reconstruction processor or engine which performs one or more of resolution recovery, scatter correction, attenuation correction, image noise reduction, edge enhancement, and non-ideal imaging system compensation.