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US 5,493,601 AGranted
Radiographic calibration phantom
AssigneeAgfa-Gevaert
InventorsChristiaan Fivez, Pieter Vuylsteke
Life of this patent
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Abstract
A phantom for determining attenuation by a combination of materials of polychromatic X-rays comprises a number of tubes that can be positioned in between a source emitting said X-rays and an X-ray detector. The tubes are held in a position so that they are directed towards the position of a source of radiation. In each tube a combination of thicknesses of said materials is provided.
Claims9
A calibration phantom for determining the attenuation of polychromatic X-rays emitted by an X-ray source by a combination of at least two materials, comprising
- (a) a number of tubes that can be positioned in between said source and a X-ray detector,
- (b) means for holding said tubes in a position so that their axes are directed towards the position of said source,
- (c) in each of said tubes a combination of samples of known thickness of said materials.
Dependencies are inferred from the claim text.