Clinicopathological correlations in aphasiology by means of computerized axial tomography: interest of using printout and prospective considerations.

This study was undertaken following a first paper describing cerebral clinicopathological correlations in aphasiology using computerized axial tomography. Its originality lies in the fact that we studied the correlations starting from the lesional sites and deducing the aphasiologic diagnosis. Our conclusions are similar but show that a small proportion of the patients do not follow the usual pattern of correlations. In view of future prospective studies, the authors emphasize the importance of information to analyze and compare well-individualized clinical syndromes. We suggest that such clinicopathological correlations could be used in other fields of neuropsychology.

Regional cerebral blood flow in children. A rheoencephalographic study of the modifications induced by reading.

Cerebral impedance changes (F changes) indicating cerebral blood flow were studied in 17 children aged 6-11 years and in 10 normal adults. At rest, large values were found in children, who never exhibited the 'hyperfrontality' pattern of the adults. Reading induced an F increase in both the dominant and non-dominant hemispheres, in contrast with a larger increase in the dominant hemisphere in adults. A spatial test was designed in adults which triggered a larger increase in the non-dominant hemisphere.

[New possibilities of anatomo-clinical correlation in aphasia using cerebral tomodensitometry (author's transl)]. / Nouvelles possibilités de corrélations anatomo-cliniques en aphasiologie grâce à la tomodensitométrie cérébrale.

The authors present a method using cerebral tomodensitometry to establish anatomo-clinical correlations in aphasia. They confirm, in their broad lines, the results of previous studies. They stress the importance of the material that could be studied by this method and define the ideal conditions in which future work should be carried out. (Acta neurol. belg., 1977, 77, 351-362).

[Quantitative rheoencephalographu in normal and pathological ageing (author's transl)]. / La rhéoencéphalographie quantitative dans le vieillissement normal et pathologique

A method of quantitative rheoencephalography estimating the rapid cerebral blood flow, defined by the clearance of Xe 133 is applied to normal, hemiplegic and demented subjects. In the normal child the flow is twice that of the elderly. In adults a decrease of 13% is observed in the fifties. The flow is decreased in both hemispheres of the hemiplegics. The cerebral flow is decreased in the two clinical groups of demented patients (vascular and non-vascular); different values of flow are obtained in these two groups.