首页>
外国专利>
In Vivo Measurement of Trace Elements in Bone by X-Ray Fluorescence
In Vivo Measurement of Trace Elements in Bone by X-Ray Fluorescence
展开▼
机译:X射线荧光体内测量微量元素
展开▼
页面导航
摘要
著录项
相似文献
摘要
Methods for in vivo measurement of lead or other trace elements in bone by x-ray fluorescence (XRF) without independent measurement of underlying tissue thickness are disclosed. In one method, the lead concentration is calculated based on the intensity of a first characteristic fluoresced peak and a function having as an argument the intensity ratio of first and second characteristic fluoresced peaks, with at least one parameter of the function being empirically determined by measurements of calibration phantoms having differing thicknesses of tissue surrogate material. In another method, the lead concentration is measured by estimating tissue thickness based on the intensity of the Compton scattering peak, or ratio of Compton/Rayleigh intensities, and the intensity of a characteristic fluoresced x-ray peak corrected for attenuation by tissue of the estimated thickness. Also disclosed is a method for determining the calcium concentration and density of bone based on XRF spectrum data.
展开▼