Frija J, Delouvrier J J, Nahum H
J Radiol. 1980 Jan;61(1):45-9.
The authors have studied seven thalamic hyperdense lesions of five patients in managing, at the same level, successively two scans with a computer tomograph at two different energies. After they recall their methodology of testing their C.T. and computations, they have found the effective atomic number and the electron density of these lesions. All (one Fahr disease and six old hemorrhages) have both high effective atomic number and electron density. They discuss the limits of this technic but they emphasize the great interest to see the chemical aspects of the structures observed in C.T.
作者研究了5例患者的7个丘脑高密度病变，在同一层面上先后用计算机断层扫描仪以两种不同能量进行了两次扫描。在回顾了他们测试CT及计算的方法后，他们得出了这些病变的有效原子序数和电子密度。所有病变（1例 Fahr病和6例陈旧性出血）均具有高有效原子序数和电子密度。他们讨论了该技术的局限性，但强调了观察CT中所观察到结构的化学方面的巨大意义。
