| Cardiac C-Arm Computed Tomography: Dynamic Reconstruction New dynamic algebraic reconstruction techniques (ART) were developed,
compared to the dynamic FBP methods and evaluated. In ART we model the
objects motion
either using a dynamic projector model or a dynamic object grid, where
the density
values are reconstructed. Both methods are compared to each other as
well as to dynamic
FBP. Spatial and temporal interpolation issues in dynamic ART and FBP
and the computational
complexity of the algorithms are addressed. The subject-specific motion
estimation
is performed using standard non-rigid 3-D/3-D and novel 3-D/2-D
registration methods that
have been specifically developed for the cardiac C-arm CT reconstruction
environment. In
addition theoretical considerations about fast shift-invariant filtered
backprojection methods
in dependency of an affine, ray-affine and non-rigid motion model are
presented. | Project manager:
Prof. Dr.-Ing. Joachim Hornegger, Dr.-Ing. Marcus Prümmer
Duration: 1.1.2009 - 31.12.2009
Contact:
Prümmer, Marcus
E-Mail: pruemmer@informatik.uni-erlangen.de
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