Carotid artery stenosis Microchapters Home Patient Information Overview Historical Perspective Classification Pathophysiology Causes Differentiating Carotid artery stenosis from other Diseases Epidemiology and Demographics Risk Factors Screening Natural History, Complications and Prognosis Diagnosis Diagnostic Testing Guidelines History and Symptoms Physical Examination Laboratory Findings Electrocardiogram MRI MRA Echocardiography or Ultrasound Other Imaging Findings Other Diagnostic Studies Treatment Medical Therapy Surgery Primary Prevention Secondary Prevention Cost-Effectiveness of Therapy Future or Investigational Therapies ACC/AHA Guideline Recommendations Diagnostic Testing Guidelines Recommendation Primary Prevention and Screening Guidelines Recommendations Secondary Prevention Guidelines Recommendations Selection of Patients for Carotid Revascularization Periprocedural Management of Patients Undergoing Carotid Endarterectomy Management of Patients Undergoing Carotid Artery Stenting Restenosis After Carotid Endarterectomy or Stenting Vascular Imaging in Patients With Vertebral Artery Disease Atherosclerotic Risk Factors in Patients With Vertebral Artery Disease Occlusive Disease of the Subclavian and Brachiocephalic Arteries Fibromuscular Dysplasia Cervical Artery Dissection Case Studies Case #1 Carotid artery stenosis CT On the Web Most recent articles Most cited articles Review articles CME Programs Powerpoint slides Images American Roentgen Ray Society Images of Carotid artery stenosis CT All Images X-rays Echo & Ultrasound CT Images MRI Ongoing Trials at Clinical Trials.gov US National Guidelines Clearinghouse NICE Guidance FDA on Carotid artery stenosis CT CDC on Carotid artery stenosis CT Carotid artery stenosis CT in the news Blogs on Carotid artery stenosis CT Directions to Hospitals Treating Carotid artery stenosis Risk calculators and risk factors for Carotid artery stenosis CT Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ## Overview[edit | edit source] CTA can be used for further imaging to assess whether the artery is still patent, in order to further assess for treatment options. ## CT[edit | edit source] If there is doubt whether the narrowing is still patent (open to blood flow) and the patient is to be assessed for treatment, the next imaging option would either be computed tomography angiogram (CTA) or a magnetic resonance imaging angiogram (MRA). CTA is usually used as it's more widely available and faster (takes only several minutes). However, it does involve significant X-ray radiation and the use of contrast agents which is usually iodinated, which can cause allergic reactions, even anaphylaxis and can also cause renal failure. ## References[edit | edit source] Template:WH Template:WS