The current book represents a distillation of the experience gained in
diagnosis of intracranial tumors with computed X-ray tomography at the
University Hos- pitals of Berlin, Mainz, and Miinchen. To what purpose?
Standard radiological techniques such as pneumoencephalography with
lumbar puncture and cerebral arteriography with puncture of the common
carotid artery are invasive proce- dures which entail a certain amount
of risk as well as discomfort for the patient. Furthermore, diagnoses
made with these procedures rely primarily on indirect signs of an
intracranial space-occupying lesion - such as displacement of the
air-filled ventricles or of normal cerebral vessels. Only a few types of
tumor are demonstrated directly with these techniques. In contrast,
computed tomography demonstrates the pathology directly in almost all
cases, and this with a minimum of risk and discomfort. In addition,
normal intracranial structures are demonstrated, so that the tumor's
effect on its surroundings can be evaluated. Today, almost a decade
after HOUNSFIELD'S revolutionary invention, diagno- sis of brain tumors
without computed tomography is almost unthinkable, if not in fact
irresponsible.