Valvular Heart Disease

Valvular heart disease is a group of conditions in which one or more of the heart’s four valves fail to open or close normally, disrupting blood flow through the chambers. Echocardiography is the first-line imaging test and remains the standard for most patients.

Cardiac-MRI-Valvular-Heart-Disease

Cardiac MRI plays a targeted, complementary role — used when echocardiographic images are limited, when echo findings are unclear, when accurate ventricular and flow measurements are needed, or when serial follow-up of the aorta or right ventricle is required [6]. This page covers the most common valvular conditions cardiac MRI helps evaluate, and where it adds value beyond echo.

General Overview of Valvular Heart Disease

The heart has four valves: aortic, mitral, tricuspid, and pulmonary. Each one directs blood through the chambers in a single direction. Valvular disease takes two main forms: stenosis, in which the valve fails to open fully, and regurgitation, in which it fails to close completely. Both place additional workload on the heart, and over time, the chambers respond with dilation, hypertrophy, or dysfunction [2].

Prevalence rises with age. In older adults, degenerative calcific changes dominate. In younger patients, congenital valve abnormalities (most commonly bicuspid aortic valve) and primary leaflet disease (such as mitral valve prolapse) are the leading causes. Echocardiography (transthoracic and, when needed, transesophageal) handles the majority of diagnostic and surveillance imaging. Cardiac MRI is reserved for situations where echo cannot give a clear answer: poor acoustic windows, eccentric or multiple regurgitant jets, right-sided valve disease, complex anatomy, and surveillance of the aorta in bicuspid valve disease [2][3].

Types of Valvular Heart Disease

The four major categories follow, organized by valve.

Aortic Valve Disease (Aortic Stenosis, Aortic Regurgitation, Bicuspid Aortic Valve)

The aortic valve sits between the left ventricle and the aorta. Aortic stenosis, the most common adult valvular lesion, is usually caused by degenerative calcific changes in older adults. Aortic regurgitation can result from valve leaflet disease, dilation of the aortic root, or both. Bicuspid aortic valve, a congenital anomaly present in roughly 1–2% of the population, is the most common congenital cardiac condition and is associated with progressive aortopathy that requires lifelong aortic imaging surveillance [4].

Mitral Valve Disease (Mitral Regurgitation, Prolapse, Mitral Stenosis)

The mitral valve sits between the left atrium and left ventricle. Mitral regurgitation is the most common mitral lesion in adults and is divided into primary disease (degenerative leaflet abnormalities, prolapse, ruptured chords) and functional or secondary disease (caused by ventricular dilation or ischemia rather than the valve itself). Mitral valve prolapse is a common form of primary mitral regurgitation, especially in younger patients. Mitral stenosis is less common in the United States today and is most often rheumatic or, in older adults, calcific [1].

Tricuspid Valve Disease

The tricuspid valve sits between the right atrium and right ventricle. Tricuspid regurgitation is the dominant lesion and is most often functional — secondary to right ventricular dilation, pulmonary hypertension, left-sided heart disease, or chronic atrial fibrillation rather than to a structural abnormality of the valve itself. Cardiac MRI is well-suited to this assessment because right ventricular size and function are difficult to assess accurately with echocardiography, and the right ventricle is central to grading tricuspid disease severity [2].

Pulmonary Valve Disease

The pulmonary valve sits between the right ventricle and the pulmonary artery. Pulmonary regurgitation is the most common pulmonary valve lesion in adults, and it is most often seen after surgical repair of Tetralogy of Fallot in childhood. Pulmonary stenosis is usually congenital and is often isolated. Right ventricular volumes and pulmonary regurgitant volume are key measurements in long-term follow-up, and cardiac MRI is the established imaging tool for both [5].

How MRI Is Used to Diagnose and Manage Valvular Heart Disease

Cardiac MRI brings together accurate quantification, three-dimensional anatomy, and tissue characterization in a single non-radiation exam. The role in valvular disease is complementary — used when echocardiography has reached its limits or when specific measurements that echo cannot provide are needed.

When MRI Adds Value Beyond Echocardiography

Cardiac MRI is most useful in valvular disease when transthoracic echo images are limited by body habitus, lung disease, or chest wall anatomy; when echo findings do not match the patient’s clinical picture; when regurgitant jets are eccentric or multiple and resist accurate quantification on echo; when accurate right ventricular volumes are needed; and for serial surveillance of the thoracic aorta in patients with bicuspid aortic valve [2][3].

Accurate Quantification of Regurgitation

Cardiac MRI directly quantifies regurgitant volume and regurgitant fraction. Phase-contrast sequences measure forward and reverse flow across the valve, and volumetric methods compare stroke volumes between the left and right ventricles. This provides reproducible, numerical measurements that complement the semi-quantitative grading echo provides — especially in cases where the two modalities disagree [1][3].

Ventricular Volumes, Function, and Remodeling

Cardiac MRI is the reference modality for measuring left and right ventricular volumes, mass, and ejection fraction. In chronic regurgitant disease, serial changes in chamber size and function are tracked to monitor the ventricles’ response to the volume load. These measurements contribute to clinical decision-making about the timing of intervention [1][2].

Valve Anatomy and Mechanism Assessment

Cine MRI shows leaflet morphology, calcification, prolapse, and the mechanism behind regurgitation. For mitral disease, this includes characterizing whether prolapse is localized or involves multiple segments — useful context for surgical planning when intervention is being considered [1].

MRA of the Aorta in Bicuspid Aortic Valve

Bicuspid aortic valve disease is associated with progressive dilation of the aortic root and ascending aorta. Magnetic resonance angiography, with ECG gating for accurate diameter measurement, provides radiation-free imaging of the thoracic aorta for serial surveillance. MRI is generally preferred over CT angiography for serial follow-up in younger patients [4]. See also Malformations of the Blood Vessels and Vasculitis.

Tissue Characterization with LGE

Late gadolinium enhancement detects myocardial fibrosis, which can develop in long-standing aortic stenosis, aortic regurgitation, and other chronic valvular conditions. The pattern and extent of fibrosis provides additional information about the ventricle’s response to chronic pressure or volume overload [3]. See also Cardiomyopathies.

Post-Surgical and Post-Intervention Follow-Up

After valve surgery or catheter-based intervention, cardiac MRI can evaluate prosthetic valve function and detect paravalvular regurgitation when echo images are limited by artifact from the prosthetic material. It is also used to assess the ventricle’s recovery after the volume or pressure load is relieved [2].

Greater Waterbury Imaging Center provides cardiac MRI for adults with valvular heart disease across the Greater Waterbury area. No ionizing radiation makes serial follow-up safer over a lifetime, especially for patients with bicuspid aortic valve who need long-term aortic surveillance. On-site claustrophobia accommodation and pediatric-friendly scheduling support patients who need repeated exams. Contact us to schedule a cardiac MRI or to discuss imaging protocols for your valve disease referral.

References

[1] Garg P, Pavon AG, Penicka M, Uretsky S. Cardiovascular magnetic resonance imaging in mitral valve disease. European Heart Journal. 2025;46(7):606–619.

https://academic.oup.com/eurheartj/article/46/7/606/7905489

Supports: Mitral regurgitation as the most common mitral lesion; CMR role in MR severity quantification, leaflet morphology assessment, mechanism characterization, and ventricular remodeling assessment.

[2] Stankovic I, Petersen SE, Cosyns B, et al. The role of multi-modality imaging in multiple valvular heart diseases: a clinical consensus statement of the European Association of Cardiovascular Imaging (EACVI) of the European Society of Cardiology. European Heart Journal – Cardiovascular Imaging. 2025;26(4):593–608.

https://doi.org/10.1093/ehjci/jeaf026

Supports: Stenosis and regurgitation framework; CMR positioning as complementary to echocardiography; CMR’s role in right-sided valve disease, ventricular volumes, and post-surgical/post-intervention follow-up.

[3] Vinco G, D’Onofrio M, Ribichini FL, et al. Role of Cardiovascular Magnetic Resonance in the Assessment of Native Aortic Regurgitation With Insights on Mixed and Multiple Valvular Heart Disease: A Narrative Review. Echocardiography. 2024;41(12):e70045.

https://onlinelibrary.wiley.com/doi/10.1111/echo.70045

Supports: CMR as second-line investigation when echocardiography is inconclusive; direct quantification of regurgitant volume and fraction; tissue characterization with LGE in aortic regurgitation.

[4] Isselbacher EM, Preventza O, Black JH III, et al. 2022 ACC/AHA Guideline for the Diagnosis and Management of Aortic Disease: A Report of the American Heart Association/American College of Cardiology Joint Committee on Clinical Practice Guidelines. Circulation. 2022;146:e334–e482.

https://www.ahajournals.org/doi/10.1161/CIR.0000000000001106

Supports: Bicuspid aortic valve prevalence (~1–2%) and associated aortopathy; MRA/MRI for thoracic aorta surveillance; ECG-gated imaging for accurate aortic diameter measurement; MRI preferred over CT angiography for serial follow-up in younger patients.

[5] Baessato F, Borrelli N, Romeo C, et al. Cardiovascular magnetic resonance and valvular heart diseases: a suggested protocol for congenital lesions. Cardiovascular Diagnosis and Therapy. 2025.

https://cdt.amegroups.org/article/view/137343/html

Supports: Cardiac MRI as the established imaging tool for pulmonary regurgitation after Tetralogy of Fallot repair; CMR protocols for congenital valvular lesions.

[6] RadiologyInfo.org (RSNA / American College of Radiology). Cardiac (Heart) MRI.

https://www.radiologyinfo.org/en/info/cardiacmr

Supports: Patient-facing description of cardiac MRI, including its non-radiation nature, scan experience, and use in evaluating cardiac anatomy and function.