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Updated: Apr 18, 2026

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
Emerging role of cardiovascular CT and MRI in the evaluation of stroke
Ricardo J Pagán1, Pragnesh P Parikh, Patricia J Mergo
11 Department of Medicine, Division of Internal Medicine, Mayo Clinic, Jacksonville, FL.
Insights
Cardiovascular CT angiography and MRI show promise for evaluating cardiac sources of stroke, offering alternatives to invasive transesophageal echocardiography. These imaging techniques aid in diagnosing cryptogenic stroke when traditional methods are insufficient.
Area of Science:
- Cardiovascular Imaging
- Neurology
- Radiology
Background:
- Stroke evaluation necessitates identifying cardiac sources of embolism.
- Transesophageal echocardiography is valuable but invasive, with contraindications.
- Cryptogenic strokes often have unknown cardiac origins.
Purpose of the Study:
- To explore the utility of CT angiography and MRI in cardiovascular assessment.
- To highlight the potential of these modalities for specific cardiac abnormalities.
- To compare advanced imaging with conventional echocardiography.
Main Methods:
- Review of current literature on CT angiography and MRI in cardiovascular evaluation.
- Analysis of data supporting the use of these techniques for cardiac abnormalities.
- Comparison with echocardiography, particularly transesophageal echocardiography.
Main Results:
- CT angiography and MRI demonstrate growing potential in cardiovascular imaging.
- These non-invasive techniques offer alternatives for patients with contraindications to echocardiography.
- Data suggests usefulness in identifying cardiac sources of embolism contributing to stroke.
Conclusions:
- Cardiovascular CT angiography and MRI are emerging as valuable tools for stroke evaluation.
- They provide essential non-invasive assessment of cardiac abnormalities.
- These modalities enhance the diagnostic capabilities for cryptogenic stroke.
Abstract:
OBJECTIVE. The purposes of this article are to explore the potential for use of CT angiography and MRI and to highlight data suggestive of their usefulness in specific cardiovascular abnormalities. CONCLUSION. The evaluation of stroke requires comprehensive assessment of potential stroke mechanisms, including cardiac sources. Despite an exhaustive search for secondary causes, the precise cause of many strokes remains unknown (cryptogenic). It is well recognized, however, that some of these potential causes occur as a result of embolism from the heart or great vessels. Thus, echocardiography, in particular transesophageal echocardiography, is instrumental in a careful assessment of cardiac causes in selected individuals. Unfortunately, transesophageal echocardiography is invasive, and some patients may have relative or absolute contraindications. Cardiovascular CT angiography and MRI have growing potential compared with conventional cardiovascular echography.
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