Patent ID: 8111803
Filing Date: 2012-02-07
Classification: A61B,G01N,G21K

Abstract:
1. A method of enhancing image analysis of projection data comprising: transmitting a beam of X-rays through an object toward a detector such that the beam of X-rays passes through a filter comprising alternating regions of high attenuation material and low attenuation material prior to reaching the detector; simultaneously acquiring high-energy projection data at a first set of locations on the detector and lower-energy projection data at a second, different set of locations on the same detector, wherein the high-energy projection data corresponds to those X-rays passing through the high attenuation material of the filter, and the lower-energy projection data corresponds to those X-rays passing through the low attenuation material of the filter; computing a respective average of the high-energy projection data for each detector element where high energy projection data was not measured by averaging the high-energy projection data measured at adjacent diagonal detector elements to the respective detector element where high energy projection data was not measured; computing a respective average of the lower-energy projection data for each detector element where lower energy projection data was not measured by averaging the lower-energy projection data measured at adjacent diagonal detector elements to the respective detector element where lower energy projection data was not measured; and at least one of: