Patent Number: 
Section: claims

1. A method of medical imaging comprising:rotating a first X-ray source-detector pair through a first set of angles around an axis of rotation;simultaneously rotating a second X-ray source-detector pair through a second set of angles around said axis of rotation, wherein said first set of angles and said second set of angles do not overlap;acquiring image data from said first X-ray source-detector pair and said second X-ray source-detector pair during rotation; andstoring said image data to form a computed tomography dataset. 2. The method of claim 1 wherein said first set of angles and said second set of angles each comprise at least 90 degrees. 3. The method of claim 1 further comprising:completing rotation of the first X-ray source-detector pair through the first set of angles and the second X-ray source-detector pair through the second set of angles in less than 3 seconds. 4. The method of claim 1 further comprising:fixing positions of said first X-ray source-detector pair and said second X-ray source-detector pair at a predetermined angle of separation; andacquiring images from said first X-ray source-detector pairs and said second X-ray source-detector pair while stationary. 5. The method of claim 4 further comprising:utilizing said computed tomography dataset for registration of said images. 6. The method of claim 1 wherein source of said first X-ray source-detector pair is configured to emit radiation from a plurality of discrete locations on its face. 7. The method of claim 1 wherein source of said first X-ray source detector-pair is a point source. 8. A method of medical imaging comprising:rotating two X-ray source-detector pairs around an imaging volume, wherein sources of said X-ray source-detector pairs are configured to emit radiation from pluralities of discrete locations on their faces;acquiring a computed tomography dataset during rotation of said two X-ray source-detector pairs;fixing said two X-ray source-detector pairs at a predetermined angle relative to one another;acquiring image data from said two X-ray source-detector pairs while stationary at said predetermined angle relative to one another;reconstructing a three-dimensional image from said image data; andutilizing said computed tomography dataset as a prior for reconstruction of said three-dimensional image. 9. The method of claim 8 wherein said prior is a Bayesian prior. 10. The method of claim 8 wherein said predetermined angle is between 80 and 100 degrees, inclusive. 11. The method of claim 8 further comprising:reconstructing said three-dimensional image using a maximum-likelihood expectation maximization in voxel space. 12. The method of claim 8 further comprising:reconstructing said three-dimensional image using an ordered-subset expectation maximization framework. 13. The method of claim 8 further comprising:reconstructing said three-dimensional image using a maximum likelihood algorithm for transmission tomography. 14. The method of claim 8 further comprising:correcting artifacts in said three-dimensional image using said computed tomography dataset.