Cardiac Magnetic Resonance Imaging in Heart Failure
Jonathan A Pan1, Christopher M Kramer1
1Cardiovascular Division, University of Virginia Health, Charlottesville, VA, USA.
Insights
Cardiac magnetic resonance (CMR) imaging enhances understanding and prognosis of heart failure (HF). This advanced imaging tool offers comprehensive assessments, aiding in diagnosis and guiding treatment for various HF types.
Area of Science:
- Cardiology
- Medical Imaging
- Biomedical Engineering
Background:
- Heart failure (HF) is a growing global health concern with diverse clinical presentations.
- Increasing prevalence of HF places a significant burden on healthcare systems worldwide.
- Accurate assessment and prognosis are crucial for effective HF management.
Purpose of the Study:
- To highlight the pivotal role of Cardiac Magnetic Resonance (CMR) imaging in evaluating heart failure.
- To detail the various CMR techniques and their specific applications in HF assessment.
- To underscore CMR's contribution to understanding HF pathophysiology and prognosis.
Main Methods:
- Utilizing CMR cine imaging for precise chamber size and function evaluation.
- Employing phase contrast imaging to quantify valvular regurgitation and complex blood flow.
- Implementing stress perfusion imaging for detecting myocardial ischemia and microvascular dysfunction.
- Applying late gadolinium enhancement (LGE) imaging for etiological diagnosis and revascularization guidance.
- Leveraging T1 and T2 mapping for non-invasive tissue characterization in cardiomyopathies.
- Using advanced CMR techniques to measure atrial and ventricular strain with high resolution.
Main Results:
- CMR cine imaging provides accurate assessment of cardiac chamber size and systolic/diastolic function.
- Phase contrast imaging effectively quantifies valvular regurgitation and abnormal flow dynamics.
- Stress perfusion imaging identifies areas of reduced blood flow indicative of ischemia.
- LGE imaging differentiates various cardiomyopathies and guides therapeutic interventions.
- T1 and T2 mapping offer insights into myocardial tissue composition, aiding in inflammatory and infiltrative diseases.
- CMR-derived strain measurements provide detailed regional and global myocardial function assessment.
Conclusions:
- Cardiac magnetic resonance (CMR) imaging is an indispensable tool for comprehensive heart failure evaluation.
- CMR offers a multi-parametric approach, providing insights into structure, function, perfusion, and tissue characteristics.
- These advanced imaging capabilities improve diagnostic accuracy, prognostic stratification, and therapeutic decision-making in heart failure patients.
Abstract:
Heart failure (HF) is a clinical syndrome with a wide variety of clinical presentations, pathophysiologies, and natural histories. HF is becoming more prevalent globally, thus increasing effects on healthcare systems. Cardiac magnetic resonance (CMR) imaging is a valuable tool for better understanding HF and its prognosis. The commonly used reference standard of CMR cine imaging provides accurate assessment of chamber size and function. Phase contrast imaging can be used to assess the degree of valvular regurgitation and complex flow patterns. Stress perfusion imaging can detect subtle areas of ischemia and microvascular dysfunction. Late gadolinium enhancement imaging aids in diagnosing causes of HF and guiding revascularization in ischemic cardiomyopathy. Supported by histological validation, T1 and T2 mapping provides non-invasive information on tissue characteristics in inflammatory and infiltrative cardiomyopathies. CMR also provides various techniques to measure strain in the atria and ventricles at high spatial and temporal resolution. CMR continues to serve as an important modality for the evaluation of HF.
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