Related Experiment Video
Updated: May 26, 2026
09:32
Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
Evaluation of aortic bioprosthesis stenosis by multidetector CT
Sophie Piérard1, Stéphanie Seldrum, Thierry Muller
1Division of Cardiology, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10-2881, B-1200 Brussels, Belgium.
Journal of Cardiovascular Computed Tomography
|January 7, 2012
Summary
Multidetector computed tomography effectively visualizes acute aortic bioprosthesis thrombosis, overcoming echocardiography limitations. Follow-up CT confirmed thrombus resolution and improved valve function after anticoagulation therapy.
Area of Science:
- Cardiovascular Imaging
- Medical Diagnostics
- Bioprosthetic Devices
Background:
- Echocardiography visualization of bioprosthetic valve leaflets is often limited by shadowing artifacts from metallic components.
- Determining the cause of bioprosthetic valve dysfunction can be challenging with traditional imaging modalities.
Observation:
- Two cases of acute aortic bioprosthesis thrombosis were successfully visualized using 256 slice-multidetector row computed tomography (CT).
- In one case, CT imaging compared to a prior exam 4 months earlier confirmed valve thrombosis.
- In the second case, follow-up CT after 2 months of oral anticoagulation demonstrated thrombus resolution and normalized valve opening.
Findings:
- Multidetector CT provides clear visualization of bioprosthesis thrombosis, a condition difficult to assess with echocardiography.
- CT imaging can track changes in thrombus burden and assess the effectiveness of anticoagulation therapy.
Implications:
- Multidetector CT is a valuable tool for diagnosing and monitoring acute aortic bioprosthesis thrombosis.
- This imaging technique can guide treatment decisions and assess therapeutic outcomes in patients with bioprosthetic heart valves.
Related Concept Videos
01:28Imaging Studies for Cardiovascular System V: CT
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
01:22Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
01:25Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT
Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...