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Publication
Iterative correction of beam hardeningartifacts in CT
Book Contribution - Book Chapter Conference Contribution
We present a method to reduce beam hardening
artifacts in computed tomography.We started from
the linearisation pre-correction method of Van
Gompel et al. [1] and modified this model to
a least squares reconstruction method, MGRA.
This modification makes it more easy to interpret
the physical meaning of the reconstructed values.
MGRA, however, is computationally expensive and
therefore, we developed an acceleration step based
on a FBP density update, MFBP. All three methods
have been evaluated with simulations and phantom
measurements.
artifacts in computed tomography.We started from
the linearisation pre-correction method of Van
Gompel et al. [1] and modified this model to
a least squares reconstruction method, MGRA.
This modification makes it more easy to interpret
the physical meaning of the reconstructed values.
MGRA, however, is computationally expensive and
therefore, we developed an acceleration step based
on a FBP density update, MFBP. All three methods
have been evaluated with simulations and phantom
measurements.
Book: First international conference on image formation in X-ray computed tomography, Salt Lake City, Utah
Keywords:computed tomography, beam hardening