title: Angiographic approach to the difficult aortic arch: a new technique for transfemoral cerebral angiography in the aged.
mesh_terms: D000328:Adult; D000368:Aged; D001013:Aorta, Thoracic; D002404:Catheterization / Q000295:instrumentation; D002533:Cerebral Angiography / Q000009:adverse effects; D005069:Evaluation Studies as Topic; D005263:Femoral Artery; D006801:Humans; D008722:Methods; D008875:Middle Aged; D011095:Polyethylenes; D011140:Polyurethanes; D013679:Technology, Radiologic
chemical_list: D011095:Polyethylenes; D011140:Polyurethanes