Methods and apparatus for differential phase-contrast cone-beam CT and hybrid cone-beam CT
R Ning, W Cai - US Patent 9,826,949, 2017 - Google Patents
A raw DPC (differential phase contrast) image of an object is acquired. The background
phase distribution due to the non-uniformity of the grating system is acquired by the same
process without an object in place, and the true DPC image of the object is acquired by
subtracting the background phase distribution from the raw DPC image.
phase distribution due to the non-uniformity of the grating system is acquired by the same
process without an object in place, and the true DPC image of the object is acquired by
subtracting the background phase distribution from the raw DPC image.
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