title: Visual claudicatio: diagnosis with 64-slice computed tomography.
abstract: We present a case of a 78-year-old male referred presented to our institution with amaurosis fugax after walking 20 steps ("visual claudicatio"). Duplex ultrasound was not able to visualize the carotid arteries. Multislice computed tomography (Sensation 64 Cardiac, Siemens, Germany) of the cerebro-vascular circulation was performed from its origin at the level of the aortic arch to the circle of Willis. The investigation demonstrated a complete occlusion of both common carotid arteries at their origin and a severe origo stenosis of both vertebral arteries. An important collateral circulation of the vertebral arteries through the minor vessels of the neck was also displayed. Both comunicans posterior arteries were small but patent. The intra-cranial arteries were patent. Multislice CT of the cerebro-vascular circulation is an optimal tool for a comprehensive evaluation when duplex ultrasound fails.
authors: Department of Radiology, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100, Parma, Italy. filippocademartiri@hotmail.com
authors: Filippo
authors: F
authors: Cademartiri
authors: Erica
authors: E
authors: Maffei
authors: Alessandro
authors: A
authors: Palumbo
authors: Nico R
authors: NR
authors: Mollet
authors: Aad
authors: A
authors: van der Lugt
authors: Girolamo
authors: G
authors: Crisi
mesh_terms: D000368:Aged; D020757:Amaurosis Fugax / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed / Q000379:methods*; D017585:Ultrasonography, Doppler, Transcranial