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Updated: Jul 28, 2026

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
Published on: June 20, 2014
Magnetic resonance imaging for characterizing myocardial diseases
Maythem Saeed1, Hui Liu2, Chang-Hong Liang2
1Department of Radiology and Biomedical Imaging, School of Medicine, University of California San Francisco, 185 Berry Street, Suite 350, Campus Box 0946, San Francisco, CA, 94107-5705, USA. msaeed@UCSF.edu.
Insights
Cardiomyopathy, diseases of the heart muscle, are diagnosed using cardiac magnetic resonance imaging (MRI). MRI reveals myocardial structure, function, and fibrosis, aiding in diagnosis and treatment monitoring for various heart muscle diseases.
Area of Science:
- Cardiovascular Imaging
- Radiology
- Cardiology
Background:
- Cardiomyopathy encompasses diverse heart muscle diseases with varying causes, structures, and treatments.
- Accurate diagnosis and characterization are crucial for effective management.
Purpose of the Study:
- To review key cardiac magnetic resonance imaging (MRI) features of different cardiomyopathies.
- To highlight MRI's role in assessing myocardial structure, function, perfusion, and viability.
Main Methods:
- Standard and contrast-enhanced cardiac MRI sequences for evaluating left ventricular (LV) mass, volumes, and function.
- Advanced techniques including myocardial strain analysis, tissue mapping (T1, T2, T2*), and extracellular volume (ECV) estimation.
Main Results:
- Cardiac MRI visualizes infarct patterns, myocardial inflammation, and diffuse fibrosis, differentiating various cardiomyopathies.
- Imaging findings correlate with disease etiology, predict functional recovery, and guide therapeutic monitoring.
Conclusions:
- Cardiac MRI is indispensable for diagnosing and monitoring myocardial diseases.
- Advanced MRI techniques offer insights into etiology and disease progression, with potential for integrated PET/MRI systems.
Abstract:
The National Institute of Health defined cardiomyopathy as diseases of the heart muscle. These myocardial diseases have different etiology, structure and treatment. This review highlights the key imaging features of different myocardial diseases. It provides information on myocardial structure/orientation, perfusion, function and viability in diseases related to cardiomyopathy. The standard cardiac magnetic resonance imaging (MRI) sequences can reveal insight on left ventricular (LV) mass, volumes and regional contractile function in all types of cardiomyopathy diseases. Contrast enhanced MRI sequences allow visualization of different infarct patterns and sizes. Enhancement of myocardial inflammation and infarct (location, transmurality and pattern) on contrast enhanced MRI have been used to highlight the key differences in myocardial diseases, predict recovery of function and healing. The common feature in many forms of cardiomyopathy is the presence of diffuse-fibrosis. Currently, imaging sequences generating the most interest in cardiomyopathy include myocardial strain analysis, tissue mapping (T1, T2, T2*) and extracellular volume (ECV) estimation techniques. MRI sequences have the potential to decode the etiology by showing various patterns of infarct and diffuse fibrosis in myocarditis, amyloidosis, sarcoidosis, hypertrophic cardiomyopathy due to aortic stenosis, restrictive cardiomyopathy, arrythmogenic right ventricular dysplasia and hypertension. Integrated PET/MRI system may add in the future more information for the diagnosis and progression of cardiomyopathy diseases. With the promise of high spatial/temporal resolution and 3D coverage, MRI will be an indispensible tool in diagnosis and monitoring the benefits of new therapies designed to treat myocardial diseases.
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