Estimating multi-energy data in a radiation imaging modality

摘要

Multi-energy imaging is afforded with a single detector array by generating a first data set, indicative of a first radiation energy spectrum, using a first set of cells of the array, and by generating a second data set, indicative of a second radiation energy spectrum, using a second set of cells of the array (e.g., where substantially more cells are in the first set than the second). The first data set is comprised of measured data from the first set of cells and estimated data that would have been yielded from the second set of cells had the second set been configured to detect the first energy spectrum. The second data set is comprised of measured data yielded from the second set of cells and estimated data that would have been yielded from the first set of cells had the first set been configured to detect the second energy spectrum.

主权项

1. A method to estimate multi-energy data, comprising data indicative of a first radiation energy spectrum and data indicative of a second radiation energy spectrum, in a radiation imaging modality comprising a detector array comprised of a plurality of detector cells, a first set of the detector cells configured to detect the first radiation energy spectrum and a second set of the detector cells configured to detect the second radiation energy spectrum, the method comprising:
generating a partial first data set using data yielded from the first set of detector cells, the partial first data set excluding data yielded from the second set of detector cells; generating a partial second data set using data yielded from the second set of detector cells, the partial second data set excluding data yielded from the first set of detector cells; estimating the data excluded from the partial first data set based upon the partial first data set to generate a complete first data set indicative of the first radiation energy spectrum; and estimating the data excluded from the partial second data set based upon the partial second data set and the complete first data set to generate a complete second data set indicative of the second radiation energy spectrum.