Methods of collimator fabrication
AssigneeEngineering Dynamics Corporation
InventorJohn W. Leask
Life of this patent
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Abstract
A collimator for radiation receiving and imaging devices and a method for making such collimators including the steps of casting a plurality of modular elements each having a base from one side of which extends a first plurality of spaced columns and from the opposite side of which extends a second plurality of columns of shorter height than the first directly opposite the spaces between the first plurality of columns, inserting the first plurality of columns of one module into the spaces between the second pluraity of columns of the succeeding module in a modified mortis-tenon relationship successively and affixing them in that position, placing the assembled grid into a frame, and filling the spaces between the grid and the frame with radiation-opaque material, thereby forming an integral functional collimating unit.
Claims14
A method for producing a collimator suitable for forming an image upon a radiation sensitive member of a radiation receiver of a radioactive object, which method comprises the steps of:
- casting a plurality of modular elements of material opaque to radiation from said radioactive object, each said modular element comprising a substantially flat base having a plurality of elongated ridges on one side thereof so as to form elongated channels therebetween, the opposite side thereof having grooves adapted to receive corresponding ridges of a neighboring module in a modified mortis-tenon relationship, and inserting and affixing the ridges of each module into the grooves of its neighbor.
A collimator for use in forming an image upon a radiation sensitive member of a radiation receiver of a radioactive object, said collimator comprising a plurality of modular cast elements of material opaque to radiation from said radioactive object, each said modular element comprising a substantially flat base having a plurality of elongated ridges on one side thereof so as to form elongated channels therebetween, the opposite side thereof having grooves adopted to receive corresponding ridges of a neighboring modular element in a modified mortis-tenon relationship.
Dependencies are inferred from the claim text.