Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/14/2025

Initial Imaging for Brachycephaly and Metopic Ridge

Clinical Examination and Imaging Recommendations

  • Clinical examination by experienced craniofacial specialists is usually sufficient to diagnose plagiocephaly and metopic ridge abnormalities without the need for imaging 1
  • Three-dimensional topographical scanning may be useful for baseline assessment of severity but is not required for diagnosis 1
  • Skull X-rays or ultrasound of the suspect suture is almost always sufficient for definitive diagnosis, providing adequate visualization while minimizing radiation exposure 1, 2
  • Ultrasound can effectively assess suture patency in infants 1
  • CT scan without contrast should be used sparingly and only when necessary to rule out true craniosynostosis, as it carries radiation risks 1, 2
  • The benefit of diagnosis using CT scan must outweigh the radiation exposure risk 1
  • MRI has no role in the diagnosis of brachycephaly or metopic ridge abnormalities 1, 2
  • Routine CT scanning should be avoided due to radiation exposure concerns 3