Novel bone density calculation method and device using high-order curved surface fitting

Abstract

The invention discloses a novel bone density calculation method and device using high-order curved surface fitting. The device comprises an image acquisition module used for acquiring an aerial image,a standard phantom and a high-energy low-energy X-ray image of the bone to be tested; an image preprocessing module used for preprocessing the images to obtain a high-energy low-energy image X-ray incident intensity measured value, the standard phantom and a high-energy low-energy X-ray emission light intensity measured value of the bone to be tested; a fitting module used for the high-order curved surface fitting to calculate parameter values in a fitting expression to obtain a bone density calculation formula; a bone density calculation module used for substituting the high-energy low-energy X-ray emission light intensity measured value of the bone to be tested into the bone density calculation formula to obtain the bone density value of the bone to be tested. According to the method and device, the influence of scattering and diffraction is greatly reduced, and the fitting method conforms to the X-ray attenuation law, so that the method is easier to converge, the system is more stable, and the calculated bone density accuracy is ideal.

Description

technical field [0001] The invention relates to a novel bone density calculation method and device using high-order surface fitting, and belongs to the technical field of medical equipment. Background technique [0002] Osteoporosis is a systemic bone disease in which bone density and bone quality decrease due to various reasons, bone microstructure is destroyed, bone fragility increases, and fractures are prone to occur. At present, the number of osteoporotic people over the age of 50 in China is estimated to be 69.4 million. Osteoporotic fractures bring high mortality and disability. Hip fracture is one of the most serious consequences among osteoporotic fractures, and the mortality rate of patients one year after fracture is as high as 20%. The number of hip fractures caused by osteoporosis in the world is about 1.66 million every year. With the aging population, the incidence of hip fractures in the world will increase by 4 times in 2050, reaching about 7 million people...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a new bone density calculation method and device using high-order surface fitting, and solve the problem of low accuracy of bone density measurement values ​​in the above method

The present invention calculates the required bone density value through the method of mathematical fitting, uses high-order surface fitting to approximate the attenuation law of dual-energy X-rays, and then solves the problems of scattering and diffraction in actual measurement

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