Random calibration device for digital type bone density bone age measuring instrument

Abstract

The invention provides a random calibrating device of a digital measuring instrument of bone mass density and bone age. A built-in bone template is set in an X-ray channel. A light target of imaging mechanism of measuring instrument is provided with human bones to be measured and X-ray projection area of built-in bone template. The imaging mechanism outputs the gray scale digital quantity of the built-in bone template to a computerization system of the device, wherein the computerization system is provided with a display interface of dialog window for displaying the gray scale digital quantity and setting value of gray scale of bone mass density stored by correcting the computerization system based on the gray scale digital quantity of the built-in bone template. The built-in bone template provides a bone mass density calibrating value which is stochastically displayed for the measuring instrument, so that the corresponding level of the setting value of gray scale of bone mass densitystored in the computerization system can be corrected at any moment based on the setting value and the corrected setting value is accurate contrast basis value under running circumference of the measuring instrument. The bone density value of the subject is contrasted with the accurate contrast basis value therefore the result is surely right. The invention has outstanding advantages, such as detecting and adjusting the test reference of the measuring instrument at any moment and being convenient to use.

Description

technical field [0001] The invention belongs to a calibration device, in particular to a random calibration device for a digital bone density and bone age measuring instrument. Background technique [0002] The digital bone density and bone age measuring instrument is the same as other instruments of this type. It is an X-ray medical diagnostic instrument that uses grayscale image calculation and display. Its measurement accuracy is often related to AC power supply, instrument gray scale adjustment, and instrument stability There is a direct relationship between sex and other conditions. At present, the above-mentioned instruments used in clinical practice are mainly imported from abroad, and a small amount of domestic instruments have also been put into clinical application in recent years. [0003] In the prior art, the instruments in various forms are equipped with a grayscale calibration device called a bone module, which is made of a metal material that imitates and is...

AI Technical Summary

Problems solved by technology

The use of the above bone module gray scale calibration device is generally carried out irregularly by the instrument department of the hospital, so it is difficult to detect the inaccuracy of the instrument in time, which may affect the accuracy and reliability of the measurement results

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