Method and apparatus for multitaxis scanning system
First Claim
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1. An imaging apparatus for examining an object to display a three dimensional image of voxels of a material of interest within said object, comprising:
- a radiation generating source including means for directing radiation in a raster from said source to said object, said radiation being capable of penetrating said object but being impeded by said material of interest;
a two-dimensional detector capable of detecting said radiation that passes through said object whereby to determine the impedance of said radiation by said material of interest and generating said image, said detector comprising an array of radiation detecting members, the x and y position of each member of said array corresponding to the x and y position of the detected raster generated radiation; and
means for moving said radiation or radiation source alongside said object with said two-dimensional detector moving correspondingly alongside the opposite side of said object to detect said radiation which passes through said object.
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Abstract
The invention discloses a MultiAxis Scanning System for x-ray imaging in which a reverse geometry source of x-ray (e.g. a raster-scanned electron beam) and a two-dimensional digital detector are used. The system has several advantages, including providing direct digital information, and three-dimensional radiographs with higher resolution and better contrast.
53 Citations
13 Claims
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1. An imaging apparatus for examining an object to display a three dimensional image of voxels of a material of interest within said object, comprising:
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a radiation generating source including means for directing radiation in a raster from said source to said object, said radiation being capable of penetrating said object but being impeded by said material of interest; a two-dimensional detector capable of detecting said radiation that passes through said object whereby to determine the impedance of said radiation by said material of interest and generating said image, said detector comprising an array of radiation detecting members, the x and y position of each member of said array corresponding to the x and y position of the detected raster generated radiation; and means for moving said radiation or radiation source alongside said object with said two-dimensional detector moving correspondingly alongside the opposite side of said object to detect said radiation which passes through said object.
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2. An imaging apparatus for examining a breast of a human to display a three dimensional image of voxels of a cellular or structural component within said breast, comprising:
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a radiation generating source including means for directing radiation in a raster from said source to said breast, said radiation being capable of penetrating said breast but being impeded by said material of interest; and a two-dimensional detector capable of detecting said radiation that passes through said breast whereby to determine the impedance of said radiation by said cellular or structural component and generating said image, said detector comprising an array of radiation detecting members movable to scan sequential sections of said breast, the x and y position of each member of said array corresponding to the x and y position of the detected raster generated radiation.
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3. An imaging apparatus for examining an object to detect the presence of a material of interest within said object, comprising:
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a radiation source including means for directing radiation in a raster from said source to said object, said radiation being capable of penetrating said object but being impeded by said material of interest; and a two-dimensional detector capable of detecting said radiation whereby to determine the impedance of said radiation by said material of interest, said impedance being determined by said two-dimensional detector detecting the radiation that reflects from the object. - View Dependent Claims (4)
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5. A method for examining an object to detect the presence of a material of interest within said object, comprising:
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generated from a radiation source directing radiation in a raster from said source to said object, said radiation being capable of penetrating said object but being impeded by said material of interest; and disposing a two-dimensional detector capable of detecting said radiation whereby to determine the impedance of said radiation by said material of interest, wherein said impedance is determined by said two-dimensional detector detecting the radiation that reflects from the object.
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6. An imaging apparatus for examining the breast of a human to display a three dimensional image of voxels of an abnormal cellular component within said breast, comprising:
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a radiation generating source including means for directing radiation in a raster from said source to said breast, said radiation being capable of penetrating said breast but being impeded by said material of interest; and a two-dimensional detector capable of detecting said radiation that passes through said breast whereby to determine the impedance of said radiation by said abnormal cellular component and generating said image, said detector having a non-linear shape for receiving said breast whereby to facilitate close fitting to said breast and comprising an array of radiation detecting members, the x and y position of each member of said array corresponding to the x and y position of the detected raster generated radiation. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification