Methods and apparatus for hybrid cone beam image reconstruction
First Claim
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1. A method for reconstructing an image using an imaging apparatus comprising a radiation source, a detector array, and a computer, said method comprising:
- performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data; and
reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.
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Abstract
A method for reconstructing an image using an imaging apparatus that includes a radiation source, a detector array, and a computer. The method includes performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data, and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance.
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Citations
20 Claims
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1. A method for reconstructing an image using an imaging apparatus comprising a radiation source, a detector array, and a computer, said method comprising:
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performing a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data; and reconstructing an image of the object utilizing the computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An imaging apparatus for reconstructing an image, said apparatus comprising a radiation source, a detector array, and a computer, and said apparatus configured to:
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perform a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data; and reconstruct an image of the object utilizing the computer, said computer programmed to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer readable medium or media having instructions recorded thereon to instruct an imaging apparatus comprising a radiation source, a detector array, and a computer, to:
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perform a helical scan of an object at a selected helical pitch using the radiation source and detector array to obtain image data; and reconstruct an image of the object utilizing the computer to perform a hybrid cone beam image reconstruction having ray-wise 3D weighting, wherein the weighting is dependent upon both helical pitch and z-distance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification