Thoracic radiography in dogs and cats: what the radiologist looks for

Thoracic radiography is one of the most common investigations in daily practice — and one where positioning and technique make all the difference.

What the radiologist evaluates

• The cardiac silhouette and heart size (including the vertebral heart score).
• Lung fields: alveolar, interstitial or bronchial patterns.
• Pulmonary vessels, trachea and mediastinum.
• The pleural space, diaphragm and thoracic bony structures.

Tips for quality images

• Take two views (lateral and ventrodorsal or dorsoventral).
• Expose at peak inspiration for good lung aeration.
• Ensure symmetric positioning, without rotation.
• Include the whole thorax, from the thoracic inlet to the last intercostal space.

Even a seemingly simple case benefits from a trained eye. If you’re unsure about a cardiac silhouette or a lung pattern, a specialist interpretation gives you clarity.