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PubMed · 12200925

Segmented multiple plane reconstruction: a novel approximate reconstruction scheme for multi-slice spiral CT.

Karl Stierstorfer·Thomas Flohr·Herbert Bruder
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Abstract

A new reconstruction scheme for multi-row spiral CT is described and results are presented. The spiral path is decomposed into small, overlapping segments which are used for a separate convolution and backprojection yielding a stack of segment images which contain only projection data of a partial scan (typically in the range of 20). These segment image stacks are, in a second step, reformatted to the requested image planes. In a third step, the reformatted segment images are added to obtain full images. The main benefit of the proposed algorithm is superior images quality. A 64-row dataset with a cone angle of 6.4 and a table feed of 80 mm per spiral turn has been reconstructed with excellent image quality. A filter direction for three-dimensional (3D) backprojection algorithms is suggested by investigating the limit where the partial scan size goes to zero.

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AlgorithmsComputer SimulationDatabases, FactualHumansPhantoms, ImagingRadiographic Image EnhancementRadiography, ThoracicTomography, Spiral ComputedComparative StudyJournal Article

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Karl Stierstorfer, Thomas Flohr, Herbert Bruder. 2002-08-07. Segmented multiple plane reconstruction: a novel approximate reconstruction scheme for multi-slice spiral CT.. https://doi.org/10.1088/0031-9155%2F47%2F15%2F301

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