The emerging role of cardiovascular MRI for suspected cardioembolic stroke

E T D Hoey1, K Mankad, H Al-Chalabi

  • 1Department of Radiology, Heart of England NHS Foundation Trust, Birmingham, UK.

Clinical Radiology
|September 4, 2012
PubMed

Insights

Cardiac MRI is increasingly vital for diagnosing cardioembolic stroke, a major cause of disability. This review details its role, techniques, and applications in identifying stroke sources from the heart or aorta.

Area of Science:

  • Cardiovascular Imaging
  • Neurology
  • Radiology

Background:

  • Stroke is a primary cause of long-term disability globally, frequently stemming from emboli originating in the heart or aorta (cardioembolic stroke).
  • Echocardiography has been the traditional method for investigating cardioembolic stroke.
  • Cardiac magnetic resonance imaging (MRI) has advanced significantly, becoming crucial in cardiovascular imaging.

Purpose of the Study:

  • To review the evolving role of cardiac MRI in diagnosing cardioembolic stroke.
  • To provide an understanding of cardiac MRI's capabilities across various cardioembolic sources.
  • To outline indications, technical aspects, and an imaging algorithm for cardiac MRI in stroke evaluation.

Main Methods:

  • Literature review focusing on cardiac MRI applications in cardioembolic stroke.
  • Analysis of technical considerations and imaging protocols for cardiac MRI.
  • Compilation of illustrative examples of disease entities causing cardioembolic stroke.

Main Results:

  • Cardiac MRI offers a comprehensive assessment of cardioembolic sources.
  • The review details specific indications and technical requirements for effective cardiac MRI.
  • An imaging algorithm is proposed to guide the use of cardiac MRI in clinical practice.

Conclusions:

  • Cardiac MRI is a powerful tool for evaluating patients with suspected cardioembolic stroke.
  • Understanding its capabilities and appropriate application is essential for optimizing stroke diagnosis and management.
  • This review serves as a guide to the utility of cardiac MRI in identifying diverse cardioembolic stroke etiologies.

Related Concept Videos

Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care01:29

Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care

Diagnosing Pulmonary EmbolismDiagnosing pulmonary embolism (PE) involves clinical assessment and advanced imaging tests. The preferred diagnostic tool is the spiral (helical) CT scan or CT angiography (CTA), which uses intravenous contrast media to visualize the pulmonary vasculature and identify emboli.A ventilation-perfusion (V/Q) scan is an alternative for patients unable to receive contrast media. This scan includes both perfusion and ventilation scanning. Perfusion scanning involves...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...