X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2005-03-08
2005-03-08
Bruce, David V (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C015S003100, C015S440000
Reexamination Certificate
active
06865247
ABSTRACT:
In order to reduce the amount of computation in the cone beam reconstruction, the invention provides, from within raw data acquired using a multidetector, extracting raw data Dr corresponding to plural lines on reconstruction field (S4), generating projection line data (S5) by multiplying raw data with cone beam reconstruction weight, filtering projection line data to generate image positional line data Df (S6), determining back projection pixel data (S7,S8,S9) of each pixel on the reconstruction field based on the image positional line data, adding, for each pixel, back projection pixel data of all views used for the image reconstruction to determine back projection data (S10,S11). The number of lines may be variable in compliance with a desired image quality.
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Armstrong Teasdale LLP
Bruce David V
GE Medical Systems Global Technology LLC
Horton Esq. Carl B.
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