Diagnosis of carotid artery disease by CT scan “intravenous CT carotid-angiography”

Internal Carotid Artery Web: Doppler Ultrasound with CT Angiography correlation.

We present a case of an internal carotid web, detected on duplex ultrasound and confirmed by CT angiography. To our knowledge, this is only the third reported ultrasound case in the imaging literature. This vascular abnormality can cause a clinically significant carotid stenosis and is a risk factor for recurrent embolic cerebrovascular events. Due to small size and poor awareness among radiolo...

Carotid-cavernous fistulas: diagnosis with spiral CT angiography.

Four cases in which the diagnosis of carotid-cavernous fistula was made by using CT angiography are illustrated. The diagnosis was confirmed by digital subtraction angiography in all four instances. To our knowledge, this is the first report of the CT angiographic appearance of carotid-cavernous fistulas.

Quantification of carotid stenosis on CT angiography.

PURPOSE Carotid artery stenosis quantification uses percent diameter ratios from conventional angiography. Multidetector high-speed CT angiography (CTA) allows direct millimeter measurement of carotid stenosis. We hypothesize a linear relationship between millimeter stenosis measurements and derived percent, alleviating cumbersome ratio calculations. METHODS Two neuroradiologists separately r...

Carotid body detection on CT angiography.

BACKGROUND AND PURPOSE Advances in multidetector CT provide exquisite detail with improved delineation of the normal anatomic structures in the head and neck. The carotid body is 1 structure that is now routinely depicted with this new imaging technique. An understanding of the size range of the normal carotid body will allow the radiologist to distinguish patients with prominent normal carotid...

Carotid artery stenosis grading using CT angiography: Evaluation Based on Carotid Area Stenosis Index