System and method of image artifact reduction in fast kvp switching ct

A method of acquiring CT imaging data, the method comprising:

• reconstructing at least two base material images using high and low peak kilovoltage (kVp) CT imaging datasets;
• generating a monochromatic raw image from the high and low kVp CT imaging datasets;
• applying one or more parallel beam forward projections to the monochromatic raw image;
• applying a correction to each of the one or more parallel beam forward projections;
• summing the corrected one or more parallel beam forward projections to generate a sum of projections;
• applying a filtered back-projection to the sum of projections using a prescribed field-of-view, to generate a base corrected image;
• and
• estimating artifact correlation based on the base corrected image.

A computer readable storage medium having stored thereon a computer program comprising instructions, which, when executed by a computer, cause the computer to:

• acquire high and low peak kilovoltage (kVp) CT imaging datasets;
• reconstruct a first base material image and a second base material image from the high and low kVp CT imaging datasets;
• generate a raw monochromatic image from the high and low kVp CT imaging datasets;
• process the raw monochromatic image to separate a first material at a first given threshold;
• forward project the first separated material;
• apply projection space processing and a filtered back-projection to the projection of the first separated material to generate a base corrected image;
• and
• correct one of a final monochromatic image and the first and second base material images using the base corrected image.

A method of acquiring CT imaging data, the method comprising:

• reconstructing at least two base material images using high and low peak kilovoltage (kVp) CT imaging datasets;
• generating a base material raw image from the high and low kVp CT imaging datasets;
• applying one or more parallel beam forward projections to the base material raw image;
• applying a correction to each of the one or more parallel beam forward projections;
• summing the corrected one or more parallel beam forward projections to generate a sum of projections;
• applying a filtered back-projection to the sum of projections using a prescribed field-of-view, to generate a base corrected image;
• and
• estimating artifact correlation based on the base corrected image.