SYSTEM AND METHOD FOR DUAL ENERGY DYNAMIC X-RAY IMAGING

摘要

A system and method for dual energy imaging in dynamic imaging sequences is disclosed. The system and method includes a x-ray source (204) configured for fast adaptation at different kV values of the x-ray source (204); a flat x-ray detector (202) having parallel signal integration and read-out; and a x-ray controller (206) in operable communication with the x-ray detector (202) and x-ray source (204). The detector (202) integrates a first signal corresponding to a first sub- image (300) at a first kV value (302), transfers the integrated first signal to a sample and hold node for each pixel and integrates a second signal corresponding to a second sub-image (304) at a second kV value (306). The detector (202) provides signal integration of the second sub- image (134) in parallel with read-out of the first sub-image from the sample and hold nodes. (300). The x-ray controller (206) controls generation of x-ray pulses in the x-ray source (204) and acquisition of images with the x-ray source (204) generating the x-ray pulses at different kV values on a millisecond timescale.