Bone mineral density correction and measurement method based on DR system

Abstract

The invention relates to the technical field of X-ray digital image processing, in particular to a bone mineral density correction and measurement method based on a DR system. The method comprises the following steps of (1) establishing a die body, especially, the die body comprises a soft tissue die body and a skeleton die body; (2) setting different exposure conditions through DR equipment to ensure that the die body can be penetrated and imaged under the different exposure conditions; (3) acquiring images of the soft tissue die body and the skeleton die body under the different exposure conditions, and calculating gray average values corresponding to different gradients of the die bodies; (4) obtaining the relationship between the attenuation coefficient of the soft tissue die body and the thickness of the soft tissue die body and the relationship between the attenuation coefficient of the skeleton die body and the thickness of the skeleton die body under the different exposure conditions; (5) acquiring a correction relation and correction parameters between the real bone mineral density of a known bone mineral density die body and the calculated bone mineral density; and (6) obtaining a real bone mineral density value of a to-be-measured object. The method has the beneficial effects that the accuracy correction and the accuracy correction are realized, and the accuracy of calculating the bone mineral density value is ensured to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of X-ray digital image processing, in particular to a method for correcting and measuring bone density based on a DR system. Background technique [0002] Existing bone density testing methods are divided into single-photon absorption measurement (Single-Photon Absorption Measurement, referred to as SPA), dual-energy X-ray absorption measurement (Dual Energy X-Ray Absorptiometry, referred to as DEXA), quantitative CT (QCT) and other methods. These methods all require special devices or settings to measure bone density, and the cost is relatively high. Dual-energy X-ray absorptiometry is calibrated to varying degrees and it is best to use the same equipment, otherwise, the image results may not be comparable. The cost of dual-energy X-ray absorptiometry and quantitative CT detection is relatively high, and bone density detection requires multiple inspections to complete; secondly, the existing bone density ...

AI Technical Summary

Problems solved by technology

Dual-energy X-ray absorptiometry is not calibrated to the same degree, it is best to use the same equipment, otherwise, there will be cases where the image results may not be comparable

The cost of dual-energy X-ray absorptiometry and quantitative CT detection is relatively high, and bone density detection requires multiple inspections to complete; secondly, the existing bone density detection methods have low image resolution and low image clarity And the degree of fineness is not good, and at the same time, the equipment of the existing bone density detection method cannot display digital images in real time under the perspective state

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