Apparatus and method of measuring bone mineral density and bone strength
    2.
    发明授权
    Apparatus and method of measuring bone mineral density and bone strength 失效
    测量骨矿物质密度和骨密度的装置和方法

    公开(公告)号:US5247560A

    公开(公告)日:1993-09-21

    申请号:US875667

    申请日:1992-04-29

    IPC分类号: A61B6/00 G01N9/24

    CPC分类号: A61B6/505

    摘要: A highly reliable apparatus and method of measuring bone mineral density and bone strength simultaneously is provided. Pleochromatic X-rays emitted from an X-ray tube are incident upon an object to be measured. Transmitted X-rays and diffracted X-rays, generated during the time period when the X-rays are passed through the object, are separately detected to simultaneously measure the bone mineral density and the bone strength.

    摘要翻译: 提供了一种高度可靠的同时测量骨矿物质密度和骨强度的装置和方法。 从X射线管发射的多色X射线入射到待测物体上。 分别检测在X射线通过物体的时间段期间产生的透射X射线和衍射X射线,以同时测量骨矿物质密度和骨强度。

    Non-dispersive X-ray fluorescence analyzer
    3.
    发明授权
    Non-dispersive X-ray fluorescence analyzer 失效
    非分散X射线荧光分析仪

    公开(公告)号:US4016419A

    公开(公告)日:1977-04-05

    申请号:US607903

    申请日:1975-08-26

    IPC分类号: G01N23/223 G01N25/00

    CPC分类号: G01N23/223 G01N2223/076

    摘要: A non-dispersive fluorescence x-ray analyzer apparatus and method for measuring the concentration of an element contained in a sample. The apparatus has an x-ray source which directs x-rays against a sample to be analyzed and a reference sample which are both at equal distances from the x-ray source. The fluorescence x-ray spectrum from both the sample to be analyzed and the reference sample is detected and converted into a series of pulse signals. Counters count the signals from both samples, and the counter for counting the pulse signals from the reference sample is set to terminate the operation of the counter for counting the signals from the sample when a pre-determined number of pulses is counted from the reference sample. The number of pulses from the sample to be analyzed is then used for performing a mathematical computation to determine the concentration of the element in the sample being analyzed, which concentration is proportional to the number of pulses counted.

    摘要翻译: 用于测量样品中所含元素的浓度的非分散荧光X射线分析仪装置和方法。 该装置具有x射线源,其将X射线对准待分析的样本和与x射线源相等距离的参考样本。 要分析的样品和参考样品的荧光X射线光谱被检测并转换成一系列脉冲信号。 计数器对来自两个样本的信号进行计数,并且设置用于对来自参考样本的脉冲信号进行计数的计数器,以当从参考样本计数预定数量的脉冲时终止用于计数来自样本的信号的计数器的操作 。 然后将来自待分析样品的脉冲数用于执行数学计算,以确定待分析样品中元素的浓度,该浓度与计数的脉冲数成比例。