title: The aqueduct echo method applied to brain stem tumours.
abstract: Echoencephalography of the posterior fossa was performed in nine cases of brain stem lesion. In all instances a dorsal displacement of the cerebral aqueduct was disclosed by means of the aqueduct echo method. The quantitative displacement was expressed by the A:B ratio method and found to agree well with calculations from corresponding pneumoencephalography.
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis*; D001933:Brain Stem; D002535:Cerebral Aqueduct; D002648:Child; D002675:Child, Preschool; D004453:Echoencephalography; D006801:Humans