[The place of echoencephalography in neurosurgery]

The different results of A- and B-mode echoencephalography, as well as the problems arising in the use of these techniques are discussed in the light of experience gained over many years in the investigation of numerous cases at a large neurosurgical department. The different indications for each method must be borne in mind, both techniques being useful in neurosurgical in mind, both techniques being useful in neurosurgical practice. The zscan technique is almost entirely confined to the domain of infant and childhood neurosurgery. Moreover, new aspects and future applications of echography in neurosurgical diagnosis are briefly discussed.