Glossary
CVAI
Cranial Vault Asymmetry Index — the percentage of asymmetry in the cranial vault. It measures the difference between the two diagonal measurements of the head.
Synonyms:CVA indexasymmetry index
Glossary of cranial terms
Definition
CVAI is calculated by taking the difference between the two diagonal measurements of the head, viewed from above, and dividing it by the larger one: |A-B|/max(A,B)×100. Normal <3.5, mild 3.5–6.25, moderate 6.25–8.75, severe >8.75.