Evaluation of left ventricular diastolic function with cardiac MR imaging

Area of Science:

• Cardiology
• Medical Imaging

Background:

• Left ventricular (LV) systolic function is routinely assessed by cardiac MRI, but diastolic dysfunction is crucial in heart failure with preserved ejection fraction.
• Diastolic dysfunction assessment is typically done via echocardiography, with limited clinical use of cardiac MRI.

Purpose of the Study:

• To explore the utility of cardiac MRI in evaluating LV diastolic function.
• To highlight advanced MRI techniques for assessing diastolic dysfunction and myocardial fibrosis.

Main Methods:

• Utilizing left atrium size and phase-contrast imaging for transmitral flow to assess LV relaxation and stiffness.
• Employing late gadolinium enhancement for myocardial fibrosis assessment.
• Investigating pulmonary venous flow and LV filling curves.

Main Results:

• Cardiac MRI can provide basic assessment of LV diastolic abnormalities.
• Late gadolinium enhancement correlates with LV stiffness due to myocardial fibrosis.
• Emerging techniques like tissue velocity imaging and MR elastography show promise.

Conclusions:

• Cardiac MRI offers valuable, though currently underutilized, methods for evaluating LV diastolic function.
• Integrating advanced MRI techniques can improve understanding and management of diastolic dysfunction.