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2003
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Fast hierarchical backprojection for helical cone-beam tomography

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Fast hierarchical backprojection for helical cone-beam tomography
Existing algorithms for exact helical cone beam (HCB) tomographic reconstruction are computationally infeasible for clinical applications. Their computational cost is dominated by 3-D backprojection, which is generally an Ç´Æ µ operation. We present a fast hierarchical 3-D backprojection algorithm, generalizing fast 2-D parallel beam and fan beam algorithms, which reduces the overall complexity of this step to Ç´Æ¿ ÐÓ Æµ, greatly accelerating the reconstruction.
Yoram Bresler, Jeffrey Brokish
Added 04 Jul 2010
Updated 04 Jul 2010
Type Conference
Year 2003
Where ICIP
Authors Yoram Bresler, Jeffrey Brokish
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