METHOD FOR DETERMINING THE QUANTITIES OF MINERAL and volumetric bone density relating to the X-Ray Densitometry ODNOENERGETICHESKOY

摘要

A method of determining quantities of mineral and the volume density of bone tissue, referring to odnoenergeticheskoy ray densitometry and consists in the fact that in the process of x-ray examination of a patient is formed a digital data array into a discrete set of coordinate values ​​and corresponding amplitude signals responsive to X-radiation detector cells outputted these data on the computer monitor in the form of X-ray image, which was isolated zone of interest, including bone tissue with surrounding boiling it with a soft tissue in the selected area of ​​the amplitudes of the signals calculated values ​​of the logarithmic X-ray attenuation, which, for each array point is defined as the logarithm of signal ratio from the detector cells not sealed from the source of X-rays by the patient to a signal from the cell, registering at a given point It passed through the patient's x-ray attenuation values ​​obtained logarithmic radiation is used to exclude a survey area by a predetermined algorithm to the soft tissue ak to support shadow image bone, then the known X-ray absorptiometry rules calculated normalized to unit area of ​​bone mass and it is determined volumetric quantities of mineral and bone density.