Normal anterior-posterior diameters of the spinal cord and spinal canal in healthy term newborns on sonography.

Background: There are no published normal values for spinal cord and canal diameters in newborns. Spinal cord and spinal canal diameters are assessed subjectively by radiologists without any objective values for the upper limit of normal.

Objective: To determine normal values for anteroposterior (AP) diameters of the spinal cord and spinal canal on sonography in healthy term newborns.