Lectures

Enlarged Cardiac Silhouette

by Hetal Verma, MD
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    About the Lecture

    The lecture Enlarged Cardiac Silhouette by Hetal Verma, MD is from the course Thoracic Radiology. It contains the following chapters:

    • Cardiac Enlargement
    • Enlarged Cardiac Silhouette

    Included Quiz Questions

    1. Heart size can be assessed on a PA film by measuring the widest diameter of the heart and comparing it to the widest diameter of the chest from the inside of the ribs.
    2. Heart size can be assessed on a Lateral chest film by measuring the widest diameter of the heart and comparing it to the widest AP diameter of the chest.
    3. Suboptimal inspiration can create the appearance of a small heart.
    4. Heart size can be assessed on a portable chest film by measuring the widest diameter of the heart and comparing it to the widest diameter of the chest from the inside of the ribs.
    5. The cardiothoracic ratio should be greater than 50%.
    1. Suboptimal inspiration causes the diaphragm to move downwards and increases the cardiac space.
    2. Rotation of the body distorts the appearance and can sometimes appear as enlarged heart.
    3. Pectus excavatum causes compression of the heart between the sternum and spine.
    4. A portable supine film causes the heart to appear enlarged due to the magnification.
    5. Chronic pulmonary hypertension can cause cardiac enlargement.
    1. Pericardial effusion is most commonly seen associated with right atrial enlargement.
    2. Pericardial effusion appears as water bottle heart on x-ray.
    3. Pericardial effusion results in an enlarged cardiac silhouette.
    4. Pericardial fluid is present between visceral and parietal pericardium.
    5. Pericardial effusion appears as a low-density fluid on the CT.

    Author of lecture Enlarged Cardiac Silhouette

     Hetal Verma, MD

    Hetal Verma, MD


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