Indications for angiography have changed little in clinics where easy access to CT scanning and radioisotope dynamic studies is provided. In spite of the sensitivity and rich information given by noninvasive methods, angiography remains the most accurate and the final diagnostic step. No other diagnostic method has greater resolution in demonstrating lesions in the vascular bed. Because of the many possibilities and the various technical facilities existing nowadays, angiography, an operative (invasive) method, must be carried out by a well-trained neuroradiologic team.
KeywordsToxicity Catheter Torque Polyethylene Migraine
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