Appeal No. 96-0659
Application 08/081,040
a source of radiation emanating in a cone beam from a source is acquired by a two-
dimensional array of detector elements. The cone beam data is filtered and
backprojected to produce first image data. Second image data is produced by estimating
data missing from the cone beam data. The final image data is obtained by combining the
first and second image data.
Representative claim 1 is reproduced as follows:
1. A computed tomography imaging system which comprises:
a two-dimensional array of detector elements for receiving photons emanating in a
cone beam from a source;
a digital acquisition system for acquiring two-dimensional arrays of cone beam
data from the array of detector elements at a series of views in which the array of detector
elements revolves around a central axis;
a filter for receiving the cone beam data and filtering the same;
means for back projecting the filtered cone beam data to produce image data
f ( rP);
D
means for receiving the cone beam data and estimating values not provided by the
received cone beam data;
means for receiving the estimated values and calculating corrected image data fc
( rP) ; and
summing means for combining the image data f ( r P) with the correction image data
D
f ( rP) to produce an image slice.
c
The examiner relies on the following references:
2
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Last modified: November 3, 2007