Long terms effects of the introduction of noninvasive investigations in neuroradiology

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Abstract
Review of imaging investigations under-gone by cohorts of in-and outpatients of a neurological hospital at 8 year intervals over a 25 year period showed that while the pattern of investigation of the individual patient was little affected by the introduction of radionuclide studies, the subsequent availability of computed tomography had a rapid and cumulative effect on the use not only of invasive investigations, but also of plain films and other noninvasive examinations.