An evaluation of the quantitative and radiation features of a scanning x-ray transverse axial tomograph: the EMI scanner.
An evaluation of the quantitative and radiation features of a scanning x-ray transverse axial tomograph: the EMI scanner.
复制标题
扫描 X 射线横轴断层扫描仪的定量和辐射特征的评估：EMI 扫描仪。
作者：
E. McCullough;H. Baker;O. Houser;D. Reese
对EMI扫描仪的评价表明，该装置提供的数值与73keV的衰减系数值呈线性关系，符合程度不到0.5%。这些测定的精密度也已显示为0.5%。已经证明了空间位置的无关性和对小到6 mm的物体的精确分辨率。测量了骨-脑物质界面上的邻接效应。辐射暴露量可与许多诊断X线检查中的辐射量相媲美。
Evaluation of the EMI Scanner, an x-ray transverse axial tomograph, has shown that the unit provides numerical values which are linearly related to the 73 keV attenuation coefficient values with an agreement of better than one half of one per cent. Precision of these determinations has also been shown to be 0.5%. Independence of spatial location and accurate resolution of objects as small as 6 mm have been demonstrated. An adjacency effect at a bone-brain matter interface was measured. Radiation exposures arc comparable to those received in many diagnostic roentgenologic procedures.