Thoracic radiographs provide information about heart size, status of pulmonary vasculature, and changes in the lungs to help differentiate left-sided congestive heart failure (CHF) from primary pulmonary disease.1
Evaluating the size and shape of the heart silhouette on radiographs is a key step in diagnosing and assessing severity of cardiac disease in dogs.2 Radiographic results should be used along with clinical signs and physical exam to determine if CHF treatment is indicated.2
How to calculate Vertebral Heart Score (VHS)
Calculating a VHS for dogs from radiographic silhouettes can help veterinarians make cardiac assessments.2
Download several easy-to-follow tools showing how to use calipers to measure rib distance on x-rays to gauge the degree of CHF and heart enlargement:
Click above to watch a brief video demonstrating how to measure VHS.