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US 7,069,066 B2Granted
Bone densitometer providing improved longitudinal studies
AssigneeGeneral Electric Company
InventorsScott Steven Zeller, Grant Morey Stevens, Paul Eugene Markwardt, Russell Harry Nord, Robert Washkenko, David Lowry Ergun
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Abstract
An x-ray densitometry system provides improved analysis of bone images taken of a patient over a course of time by comparing the images to deduce positioning errors and/or to correct positioning errors for improved quantitative assessment of the bone.
Claims9
A computer-aided bone densitometry system comprising:
- an x-ray source and detector opposable about a patient to produce signals indicating x-ray attenuation by bone of the patient;
- a computer receiving the signals and executing a stored program to:
- (a) collect a first and second bone density image at a first and second time;
- (b) determine a correspondence in bone areas in corresponding regions of the first and second bone density images;
- and
- (c) provide an indication to an operator of possible patient positioning error when a predetermined correspondence in bone areas is not found.
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Dependencies are inferred from the claim text.