Methods and devices for quantitative analysis of X-ray images
First Claim
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1. A computer program product for generating a density calibration curve from a digital x-ray image of an anatomic structure, the x-ray image including a calibration phantom comprising at least one marker positioned in an area of known density, the computer program product comprising a computer usable medium having computer readable program code thereon, the computer readable program code comprising:
- (a) program code for measuring attenuation at a multitude of points in the x-ray image of the calibration phantom;
(b) program code for measuring attenuation of at least one point of known density in the x-ray image of the anatomical structure;
(c) program code for generating a calibration curve that describes the relationship between attenuation measured in (a) and (b) and material thickness; and
(d) program code for translating the calibration curve describing thickness into a curve describing calcium concentration.
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Abstract
The present invention relates to network enabled analysis of x-ray images. Also described are devices comprising calibration phantoms; methods of using these devices; methods of formulating databases containing information regarding x-ray images; the databases themselves; and methods of manipulating the information and databases.
186 Citations
11 Claims
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1. A computer program product for generating a density calibration curve from a digital x-ray image of an anatomic structure, the x-ray image including a calibration phantom comprising at least one marker positioned in an area of known density, the computer program product comprising a computer usable medium having computer readable program code thereon, the computer readable program code comprising:
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(a) program code for measuring attenuation at a multitude of points in the x-ray image of the calibration phantom; (b) program code for measuring attenuation of at least one point of known density in the x-ray image of the anatomical structure; (c) program code for generating a calibration curve that describes the relationship between attenuation measured in (a) and (b) and material thickness; and (d) program code for translating the calibration curve describing thickness into a curve describing calcium concentration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification