Radiological Diagnosis of Brain Tumours (including Ventriculography) *

for the use of record cards and X-rays. REFERENCES. RADIOLOGY plays a comparatively small though important part in the diagnosis of brain tumours. It is essentially a question of team-w%ork divided between the neuro-logical surgeon, the neurologist, the occulist, and radiologist. The neurological surgeon is the captain of the team, and it is he who collects together and correlates the evidence (leduced from the various methods of examination, finallv putting them together as one assembles a jigsaw puzzle, until the picture is complete and the diagnosis is established. In some cases the interpretation of the radliographs is easy, but in many cases it is extremely difficult, and calls for considerable experience and an accurate knowledge of the anatomy of the brain, the pathology of brain tumours, and every detail of the procedure of the examiniatioin wvhichi has been carried out. For this reason teamwork is essential, for in ma!ny cases the radio-logist does not possess the information upon the clinical side of the case to enable him to make a diagnosis from the X-ray appearanices alone. In some ilnstanlces the X-ray diganosis can be made without any reference to the cliniical history or neuro-logical findings, but in many others localization of a tumour is extremely cdifficult, even while utilizing every metlhocl of examination at our disposal. I should like, first, to refer very briefly to the routine examination of the skull, for such an investigation always precedes ventriculographv and may give valuable *A paper read before the Ulster Medical Society, 13th February, 1936. 147