Extrapolative reconstruction method for helical scanning

Details Extrapolative reconstruction method for helical scanning Extrapolative reconstruction method for helical scanning

1989-11-13

1993-08-03

McElheny, Jr., Donald E.

Boots, shoes, and leggings

36441317, G06F 1500

Patent

active

052335186

ABSTRACT:
A method of reducing image helical scanning; artifacts in computed tomography imaging systems divides 360.degree. of projection data into two half scans. Separate weighting functions are applied to the two half scans and they are reconstructed to an image per conventional reconstruction methods. The weighting functions provide effective interpolation and extrapolation of the half scan data to a slice plane centered in the projection data. In one embodiment, the weighting functions are feathered with a cubic function to remove weighting induced image artifacts.

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