Matching geometry generation and display of mammograms and tomosynthesis images
First Claim
Patent Images
1. A method comprising:
- acquiring several 2D x-ray tomosynthesis projection images Tp of a patient'"'"'s breast taken at different angles of an imaging x-ray beam relative to the breast;
computer-processing the projection images Tp into reconstructed slice images Tr representing respective 3D slices of the breast;
said computer-processing comprising first reconstructing said projection images Tp into initial slice images Tr(i) in a first coordinate system and then computer-processing the initial slice images Tr(i) into a second, different coordinate system to generate said slice images Tr; and
selectively displaying said slice images Tr on a computer display unit.
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Abstract
A method and a system for using tomosynthesis projection images of a patient'"'"'s breast to reconstruct slice tomosynthesis images such that anatomical structures that appear superimposed in a mammogram are at conforming locations in the reconstructed images.
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Citations
20 Claims
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1. A method comprising:
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acquiring several 2D x-ray tomosynthesis projection images Tp of a patient'"'"'s breast taken at different angles of an imaging x-ray beam relative to the breast; computer-processing the projection images Tp into reconstructed slice images Tr representing respective 3D slices of the breast; said computer-processing comprising first reconstructing said projection images Tp into initial slice images Tr(i) in a first coordinate system and then computer-processing the initial slice images Tr(i) into a second, different coordinate system to generate said slice images Tr; and selectively displaying said slice images Tr on a computer display unit. - View Dependent Claims (2, 3, 4, 5)
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6. An x-ray system comprising:
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a data acquisition unit using x-rays emanating from an origin and an x-ray receptor acquiring several projection tomosynthesis images Tp of a patient'"'"'s breast taken at different angles of the x-rays relative to the breast; an image reconstruction unit receiving the projection images Tp and reconstructing them into slice images Tr representing respective slices of the breast; each of said slice images Tr comprising respective pixel values representing a respective array of pixels; wherein the image reconstruction unit reconstructs said projection images Tp into initial slice images Tr(i) in a first coordinate system and then maps said initial slice images into said slice images Tr in a second, different coordinate system. - View Dependent Claims (8)
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7. The system of 6 in which the pixels of said initial slice images Tr(i) represent voxels in the breast that are the same in size at least in planes to which the respective slices conform.
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9. A method comprising:
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obtaining slice images Tr representing respective 3D slices of the breast reconstructed through computer processing of several 2D x-ray tomosynthesis projection images Tp of a patient'"'"'s breast taken at different angles of an imaging x-ray beam relative to the breast; at least a plurality of said 3D slices of the breast extending along planes parallel to each other; each of said slice images Tr being a pixel image where the pixels represent respective volume elements of breast tissue; wherein in said planes said volume elements differ in area between at least two of said slices of the patient'"'"'s breast; and displaying at least one of said slice images Tr as pixel images on a computer display. - View Dependent Claims (10, 11, 13, 14, 15)
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12. The method of 9 in which the pixel spacing is the same in a plurality of the displayed images Tr.
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16. An image reconstruction and display system configured to carry out the steps of:
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obtaining slice images Tr representing respective 3D slices of the breast reconstructed through computer processing of several 2D x-ray tomosynthesis projection images Tp of a patient'"'"'s breast taken at different angles of an imaging x-ray beam relative to the breast; at least a plurality of said 3D slices of the breast extending along planes parallel to each other; each of said slice images Tr being a pixel image where the pixels represent respective volume elements of breast tissue; wherein in said planes said volume elements differ in area between at least two of said slices of the patient'"'"'s breast; and displaying at least one of said slice images Tr as pixel images on a computer display. - View Dependent Claims (17, 18, 19, 20)
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Specification