X-ray calibration
OwnerRichard King, Damain Griffininventors
Life of this patent
Estimating the term…
Abstract
Methods, devices, and kits for determining the magnification of an x-ray image of an object, or a portion of an object are described. An exemplary method comprises the steps of providing an object to be x-rayed, providing a first posterior x-ray marker having a pre-determined dimension, providing anteriorly to the object to be x-rayed, a second x-ray marker having predetermined dimensions, recording an x-ray image of the object, the first posterior x-ray marker, and second x-ray markers, and comparing a dimension of the first posterior x-ray marker recorded on the x-ray image, and a dimension of the second x-ray marker recorded on the image to a pre-determined value for the object x-rayed, to estimate a magnification of the x-ray image of the object.
Claims20
A method of determining the magnification of an x-ray image of an object, or a portion of an object, the method comprising the steps of:
- (i) providing an object to be x-rayed;
- (ii) providing a first posterior x-ray marker having a pre-determined dimension;
- (iii) providing anteriorly to the object to be x-rayed, a second x-ray marker having predetermined dimensions;
- (iv) recording an x-ray image of the object, the first posterior x-ray marker, and second x-ray markers;
- and
- (v) comparing a dimension of the first posterior x-ray marker recorded on the x-ray image, and a dimension of the second x-ray marker recorded on the image to a pre-determined value for the object x-rayed, to estimate a magnification of the x-ray image of the object.
A system for determining the magnification of an x-ray image of an object comprising a processor and a memory, the memory comprising an image, the image comprising an image of a first x-ray marker, an image of a second x-ray marker and an image of an object or part of an object;
- the processor configured to:
- (i) place a cursor over the image of the first x-ray marker and calculate a dimension of the first x-ray marker;
- (ii) place a cursor over the image of the second x-ray marker and calculate a dimension of the second x-ray marker;
- and
- (iii) compare the two dimensions with a pre-determined value for the object, or part of the object, of the image to provide an estimate of the magnification of the image.
An x-ray device comprising:
- an x-ray source;
- an x-ray detector;
- and
- a mat comprising one or more markers, the mat arranged to be placed adjacent to the x-ray detector;
- and
- one or more markers for placing on an anterior surface of an object to be x-rayed;
- wherein the one or more markers have a pre-determined dimension and are capable of being detected by x-ray imaging.
Dependencies are inferred from the claim text.