System and method for dual energy dynamic X-ray imaging

Abstract

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.

Description

technical field [0001] The present disclosure relates generally to dual energy imaging, and in particular to a method and system for dynamic dual energy imaging, and more particularly to said dynamic dual energy imaging using dual (ie, two different) x-ray energies. Energy imaging system and method by rapidly switching an x-ray energy source between low and high energy levels and wherein the resulting corresponding dual-energy x-ray images. The dual energy images are processed using a pre-calibrated database and adjustable parameters to produce corresponding individual images that provide enhanced visibility to anatomical structures of interest, facilitating x-ray imaging, for example, during cardiac / vascular applications . Background technique [0002] The practice of using x-ray systems in clinical imaging and diagnosis is well established. Several types of x-ray imaging methods are available to image different anatomical regions or to provide different diagnostic tools...

AI Technical Summary

Problems solved by technology

However, involuntary patient movements such as heart contraction cannot be avoided

Significant motion of the heart between the two x-ray images may produce poor image quality due to defective tissue removal in the subtraction image

The poor image quality can lead to possible missed arteries with plaque surrounding the heart

[0005] Furthermore, in conventional x-ray imaging systems for dynamic imaging, image acquisition, dose control, and image readout are all too slow to achieve x Radiation sources use different kV values

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