Back to results
US 7,245,697 B2Granted
Methods and devices for quantitative analysis of x-ray images
AssigneeImaging Therapeutics, Inc.
InventorPhilipp Lang
Life of this patent
Estimating the term…
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.
Claims9
A method of generating a density calibration curve, comprising the steps of
- (a) providing an assembly comprising an x-ray film holder;
- x-ray film and a wedge-shaped calibration phantom having length (L), and thickness (T) that varies nonlinearly along the length;
- (b) producing an x-ray image of an anatomical structure, wherein the x-ray image comprises the calibration phantom;
- (c) measuring attenuation at a multitude of points in the x-ray image of the calibration phantom;
- (d) measuring attenuation of a least one point of known density in the x-ray image of the anatomical structure;
- (e) generating a calibration curve that describes the relationship between attenuation measured in (c) and (d) and material thickness;
- and
- (f) translating the calibration curve describing thickness into a curve describing calcium concentration.
5 more elements
Dependencies are inferred from the claim text.