Cardiomegaly - Mild
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Cardiomegaly - Mild
- Good quality Posterior-Anterior chest X-ray with no rotation (the spinous processes are at the mid point between the medial ends of the clavicles) - this allows the heart size to be assessed accurately
- CTR (Cardio-Thoracic Ratio = cardiac width/thoracic width) is frequently expressed as a percentage
- In this image CTR = 53%
- There are no other signs of heart failure
Cardiomegaly
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Cardiomegaly
- History of hypertension and angina
- This patient has an enlarged heart
- CTR = 68%
Left atrial enlargement
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Left atrial enlargement
- This image shows massive cardiomegaly (CTR=79%) in a patient with a metallic mitral valve replacement
- Occasionally signs of enlargement of specific heart chambers may be visible
- This image shows specific features indicating massive enlargement of the left atrium (highlighted area)
- 1 - Carina splayed to >90°
- 2 - Double right heart border
- 3 - Left atrial appendage bulging the left heart border