Key findings at 24 weeks gestation. The central sulcus is now becoming visible. Normal foliation of the cerebellar vermis nicely depicted, and note visualisation of the pituitary stalk. 5 layered laminar appearance is still seen.
Ventricular zone (curved arrow); 2. periventricular fibre-rich zone (dotted arrow); 3. intermediate zone (straight long arrow); 4. sub-plate (fuzzy arrow); 5. cortex (short thick arrow)