PurposeHead circumference (HC) is an important clinical parameter in neuropediatrics, but it is often missing or outdated in referral information. This can lead to subjective, reader-dependent estimation during MRI interpretation. We first aimed to compare magnetic resonance imaging (MRI)-based methods for HC measurement against the tape measure (ground truth), and second to establish an automated alternative.MethodsIn 23 children (mean age 4.5 years, range 0.5–17 years), HC was prospectively me