Baby Head Shape Self Check
Calculate CI & CVAI to get a preliminary assessment of your baby's head shape from a top-view photo.
This tool is for reference only and does not replace professional medical diagnosis. If you are concerned about your baby's head shape, at iMedX we provide precise 3D head scanning, advanced analysis software, and personalised clinical advice from our doctors — book a consultation to get a full professional assessment.
Book a Consultation →Upload a top-view photo of your baby's head
Rotate if needed so the head is upright (optional)
Click to place 2 points at the widest ear-to-ear line
Fine-tune the 8 measuring points on the head boundary
Calculate CI & CVAI — adjust points and recalculate anytime
What are CI and CVAI?
CI (Cephalic Index): the ratio of head width to head length × 100. CI ≥ 85 may indicate brachycephaly (flat head).
CVAI (Cranial Vault Asymmetry Index): measures the degree of asymmetry between the two sides of the head. CVAI ≥ 3.5 may indicate plagiocephaly (head tilt/asymmetry).
How to Take the Right Photo
- 1Place your baby lying on their back or sitting upright
- 2Take the photo straight from above (bird's eye view)
- 3Ensure good lighting, avoid shadows
- 4No need to shave hair — the photo can be taken through hair