title: [Determination of effective atomic number and electronic density by computed tomography with dual energies. Application to the thalamus (author's transl)].
abstract: 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.
mesh_terms: D001927:Brain Diseases / Q000000981:diagnostic imaging; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging; D004583:Electrons; D006801:Humans; D008875:Middle Aged; D011789:Quantum Theory; D013788:Thalamus / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods
vernacular_title: La détermination du numéro atomique effectif et de la densité électronique par la tomodensitométrie effectuée à deux tensions différentes. Application au thalamus.