Over a 3-year period, 667 brain scans were performed, of which the results in 632 have been analysed.
Positive scans were found in 68% of 204 cerebral tumours. There was a high rate of detection of meningiomas and malignant gliomas. Scanning was less helpful in visualizing slowly growing gliomas, and those tumours situated in the mid-line or posterior fossa. Metastases occupied an intermediate position.
Positive scans occurred in a proportion of patients following acute cerebro-vascular accidents, and in a few other miscellaneous disorders.
Virtually all patients with transient cerebral ischaemia, migraine, epilepsy and presenile dementia had normal brain scans.
The value and limitations of this investigation have been discussed.
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