Chest X-Ray (Radiograph)
Shows the overall size and shape of the heart and whether there is fluid in or around the lungs. Often the first test done when heart disease is suspected.
What it measures
Heart silhouette size and shape, vertebral heart score (VHS - a standardized measurement of heart size relative to the spine), presence of pulmonary edema (fluid in the lungs), pleural effusion (fluid around the lungs), and pulmonary vein enlargement. X-rays show the consequences of heart disease (enlargement, fluid) but can't show how the heart is functioning - that requires an echocardiogram.
What to expect
Your dog is positioned on an x-ray table, typically lying on their side and then on their belly. The technician may gently hold your dog in position. The actual x-ray takes seconds. Usually 2-3 views are taken. Sedation is rarely needed. Results are available within minutes.
Typical cost
$150-300 for 2-3 views. Often done as part of an initial cardiac workup or emergency evaluation.
How often
Initial diagnosis: as part of the first cardiac workup. Emergency: whenever breathing difficulty or coughing worsens suddenly. Monitoring: typically at recheck visits when clinical signs change. Less frequent than echocardiograms for ongoing monitoring.
Conditions detected
Breeds that need this test
This test may be recommended for any breed with suspected heart disease.
Need to schedule a chest x-ray?
Find a board-certified veterinary cardiologist near you who can perform this test and interpret the results.
Find a cardiologist →Medical disclaimer: Heart Dog Club provides educational information only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian or board-certified veterinary cardiologist (DACVIM-Cardiology) regarding your dog's health.