Patent Document ID: 20150071400
Application ID: 14468436
Patent Status: 0

Claim One:
1. A method for dual-energy spectra CT scanning and image reconstruction of two tomographic image datasets from a relatively higher-energy spectrum and a relatively lower-energy spectrum, comprising: scanning an examination object with an x-ray source from a plurality of projection positions and projection directions with two different x-ray energy spectra and respectively determining, in each case, an undersampled attenuation dataset of the examination object for each respective x-ray energy spectrum, wherein the two different x-ray energy spectra are at least each also created by a respectively different acceleration voltage of the x-ray source, and the scanning x-rays, per respective x-ray energy spectrum, are spatially distributed randomly or pseudo-randomly, reconstructing two tomographic image datasets using the two undersampled attenuation datasets in accordance with at least one iterative CS reconstruction method; and at least one of storing, outputting and further processing the reconstructed tomographic image datasets.