Watershed infarcts, or parasagittal cerebral injury, were demonstrated in the asphyxiated neonatal brain the late 1970s with the use of technetium scans,^1–3 but were extremely difficult to visualise in the acute phase in vivo.^2,4,5

Recently, a full term boy was born after a caesarean section because of mild fetal distress. A cephalic version was performed at 38 weeks, but the …