Vertebral Heart Size (VHS) Calculator
Clinical judgment required. This calculator is a decision-support tool, not a substitute for veterinary consultation.
Vertebral Heart Size (VHS) CalculatorCanineFeline
Calculate vertebral heart size (VHS) from thoracic radiograph measurements in dogs and cats. VHS is measured by summing the long axis and short axis of the cardiac silhouette in vertebral body units starting at T4. Compares result against species and breed-specific normal ranges. Includes breed-specific normals for Boxer, Bulldog, Cavalier King Charles Spaniel, Doberman, Golden Retriever, Greyhound, Labrador, and more. Used for cardiac enlargement assessment, cardiomegaly screening, heart failure evaluation, and monitoring cardiac size progression on radiographs.
vertebral bodies
vertebral bodies
Vertebral Heart Size
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Normal Range
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Deviation from Mean
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2 SD
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