Imaging resolution recovery techniques
AssigneeIndiana University Research and Technology Corporation
InventorsGary D. Hutchins, Victor Soon, Michael A. Miller
Life of this patent
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Abstract
One embodiment is a unique method employing an improved image resolution recovery technique. Another embodiment is a unique system implementing an improved image resolution recovery technique. A further embodiment is a method including obtaining a sinogram based upon a measurement of an imaging system, processing the sinogram using a smoothing or fitting technique, deconvolving a system response function of the imaging system from the sinogram to provide a deconvolved sinogram, and constructing an image based upon the deconvolved sinogram. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.
Claims29
A method comprising:
- operating a patient diagnostic imaging system including a detector to obtain a sinogram of a target object;
- processing the sinogram with a computer using a smoothing or fitting technique;
- deconvolving a system response function of the imaging system from the sinogram with the computer to provide a deconvolved sinogram;
- and
- constructing an image with the computer based upon the deconvolved sinogram;
- wherein the deconvolving includes calculating a solution or estimation of
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- for q(s,θ,z), where m2 is the second order moment of the transverse component of the system response function of the imaging system, p(s,θ,z) is the sinogram, s is the projection position, θ is the projection angle, and z is the axial slice distance.
A system comprising:
- a patient diagnostic imaging system operable to provide a sinogram based upon a measurement of the imaging system;
- at least one computer readable memory configured to store first executable instructions to perform a smoothing or fitting operation on the sinogram, second executable instructions to deconvolve a system response function of the imaging system from the sinogram to provide a deconvolved sinogram, and third executable instructions to construct an image based upon the deconvolved sinogram;
- and
- at least one processor operable to execute said first executable instructions, said second executable instruction, and said third executable instructions;
- wherein the second executable instructions are executable to estimate a true sinogram by solving
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- for q(s,θ,z), where m2 is the second order moment of the transverse component of the system response function of the imaging system, p(s,θ,z) is the sinogram, s is the projection position, θ is the projection angle, and z is the axial slice distance.
Dependencies are inferred from the claim text.