Spherical electrode X-ray imaging chamber
AssigneeXonics, Inc.
InventorArthur Lee Morsell
Life of this patent
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Abstract
An imaging chamber for a radiographic system for exposing an image receptor sheet to an X-ray source. A chamber with an X-ray window having low and uniform X-ray absorption and being substantially rigid for maintaining a uniform gap spacing between the electrodes with a high pressure in the gap. A window comprising inner and outer plates joined at the sides and a space between the sides with a compression resistant filler, with one plate stressed in compression and the other stressed in tension. A chamber using the X-ray absorbing gas to press the receptor sheet against an electrode to achieve the desired sheet configuration.
Claims14
In an imaging chamber for a radiographic system, the combination of:
- a base;
- a first electrode carried in said base;
- an X-ray window comprising an outer plate and an inner plate with a conductive surface serving as a second electrode, with said plates in engagement at opposite sides thereof and spaced from each other between said sides by a compression resistant filler;
- means for mounting said plates to said base with said inner plate adjacent said first electrode defining a gap therebetween;
- and
- means for sealing said gap adjacent the periphery of said inner plate to maintain a fluid in said gap.
A method of obtaining a shaped electrostatic image receptor sheet in an imaging chamber for making radiographs using a source of ionizing radiation directed to a gap between electrodes of the imaging chamber, where one of the electrodes is concave, including the steps of:
- clamping the receptor sheet about its periphery in the gap between the electrodes at the concave electrode;
- and
- introducing a radiation absorbing and ion producing gas under pressure into the gap on one side of the radiation sheet stretching the sheet into a concave shape with the concave electrode serving as a mold defining the shape of the sketched sheet, and with the gas holding the sheet in place against the electrode.
Dependencies are inferred from the claim text.