Methods and apparatus for image reconstruction in...

X-ray or gamma ray systems or devices – Specific application – Computerized tomography

Reexamination Certificate

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C378S901000

Reexamination Certificate

active

06937689

ABSTRACT:
A method for imaging an object that includes utilizing a computed tomography imaging apparatus having a distributed x-ray source to acquire samples of projection data of an object in angular and temporal space utilizing a predetermined sampling lattice. Acquired projection data is filtered utilizing a two-dimensional linear filter to produce filtered data, and the filtered data is then backprojected to obtain a reconstructed image of the object.

REFERENCES:
patent: 4463375 (1984-07-01), Macovski
Nitin Aggarwal, Marios S. Pattichis, Jackie Shen, Richard Leahy, James Theiler, Andrew Fraser and Guillermal Sapiro, “Image Analysis and Understanding Data from Scientific Experiments,” Los Alamos National Laboratory Workshop, Dec. 2-6, 2002.
Yoram Bresler, “Unified Time-Sequential Sampling Theory for Spatio-Temporal Signals,” Department of Mathematics, University of Illinois at Urbana-Champaign, Nov. 19, 1998.
Yoram Bresler and N. Parker Willis, “Optical Scan Design for Time-Varying Tomographic Imaging,” IEEE, 1993.
N. Parker Willis and Yoram Bresler, “A New Approach to the Time-Sequential Sampling Problem,” IEEE, 1992.
N. Parker Willis and Yoram Bresler, “Optimal Scan Design for Tomographic Imaging of Time Varying Distributions,” IEEE, 1991.
N. Parker Willis and Yoram Bresler, “New Results on Time-Sequential Sampling,” Department of Electrical Engineering, University of Illnois at Urbana-Champaign, Date Unknown.
Nitin Aggarwal, “Dynamic Cardiac MR Imaging Based on Time-Sequential Sampling Theory,” DSP Seminar, Nov. 6, Year Unknown.

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