X-ray calibration
OwnerRichard King, Damain Griffininventors
Life of this patent
Estimating the term…
Abstract
A method of determining the magnification of an x-ray image of an object, or a portion of an object, comprising: (i) providing to the object to be x-rayed; (ii) providing a first posterior x-ray marker having 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 and the first and second x-ray markers; and (v) comprising a dimension of the first x-ray marker recorded on the image, a dimension of the second x-ray marker recorded on the image to a pre-determined value for the object x-rayed, to estimate the magnification of the image of the object.
Claims22
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 it;
- (ii) place a cursor over the image of the second x-ray marker and calculate a dimension of it;
- 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 one or more markers having a pre-determined dimension, wherein the markers are capable of being detected by x-ray imaging.
Dependencies are inferred from the claim text.