Carotid stenosis is usually diagnosed by<unk>  scan of the neck arteries.  This is the first imaging option and usually used for follow up and observation as it involves no radiation and no contrast agents that may cause allergic reactions.
Carotid artery stenosis echocardiography or ultrasound
Carotid artery stenosis electrocardiogram
Aortitis echocardiography or ultrasound
Aortic stenosis physical examination
Carotid body tumor physical examination
Aortic sclerosis physical examination
Carotid artery stenosis MRA
Carotid body tumor echocardiography and ultrasound