Ommaya A K, Murray G, Ambrose J, Richardson A, Hounsfield G
Br J Radiol. 1976 Jul;49(583):604-11. doi: 10.1259/0007-1285-49-583-604.
The spatial and density resolution capability of the EMI-Scanner device for computerized axial tomography has been determined in vitro. For density differences greater than +/-1 per cent the spatial resolution is 6 X 6 mm. For density differences of 3 per cent and greater the resolution is 3 X 3 mm. Density resolution is at least +/-1 per cent for objects greater than 1 cm. Preliminary data on in vitro measurement of X-ray linear attenuation coefficients in tissue biopsies and standard solutions are given, together with the early results of enhancement of tissue density differences in vivo. Implications of this new technique for an in vivo neuropathology are suggested.
已在体外测定了用于计算机轴向断层扫描的EMI扫描仪设备的空间和密度分辨率。对于大于+/-1%的密度差异，空间分辨率为6×6毫米。对于3%及以上的密度差异，分辨率为3×3毫米。对于大于1厘米的物体，密度分辨率至少为+/-1%。给出了组织活检和标准溶液中X射线线性衰减系数的体外测量初步数据，以及体内组织密度差异增强的早期结果。还提出了这项新技术对体内神经病理学的影响。
