Computed Tomography and Contrast Enhancement

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Abstract

To the editor: At the Second Annual Meeting of the Society For Computerized Tomography and Neuro-Imaging held at Hilton Head, North Carolina, 29 October 1978, the subject of contrast enhancement in computed tomography (CT) scanning was discussed. The generally agreed upon indications for the use of intravenous contrast to help delineate lesions of the brain are as follows:

1. Previously treated brain tumors.

2. Abnormal isotope scans, cerebral arteriograms, or other positive neurodiagnostic tests.

3. Possible posterior fossa lesions, especially cerebellar pontine angle tumor.

4. Metastatic disease.

5. Arteriovenous malformations or aneurysms.

6. Patients with focal central nervous system signs.

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