Incorporation of axial system response in iterative...

Details Incorporation of axial system response in iterative... Incorporation of axial system response in iterative...

2011-01-25

2011-01-25

Strege, John B (Department: 2624)

Image analysis

Applications

Biomedical applications

C382S131000

Reexamination Certificate

active

07876941

ABSTRACT:
A method and system for reconstructing PET image data from a cylindrical PET scanner by incorporation of axial system response. The method includes the steps of: assuming the decomposition of axial components into individual line-of-response (LOR) contributions, approximating each LOR spreading in image space as depth-independent, implementing each LOR response, combining the LORs to produce large span projection data, implementing the back projector as a transposed matrix, and assembling the LOR projections and spans for each azimuthal angle.

REFERENCES:
patent: 2008/0180580 (2008-07-01), Kadrmas
Joseph, “An Improved Algorithm for Reprojecting Rays Through Pixel Images” Medical Imaging, IEEE Transactions on vol. 1 , Issue: 3. Publication Year: 1982 , pp. 192-196.

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