title: A SIMPLIFIED METHOD FOR THE PNEUMOENCEPHALOGRAPHIC DEMONSTRATION OF THE FOURTH VENTRICLE AND AQUEDUCT OF SYLVIUS.
mesh_terms: D002535:Cerebral Aqueduct; D014695:Cerebral Ventriculography; D003952:Diagnostic Imaging; D020546:Fourth Ventricle; D006801:Humans; D011859:Radiography
keywords: VENTRICULOGRAPHY