Distribution of myelin seen on MR images from term to 2 years

T1W images	T2W images
1 month
PLIC, optic radiation, central CS,	Posterior 1/3 PLIC,
optic nerve, cerebellar peduncles,	central CS, dorsal pons,
dorsal pons, vermis,	peridental WM, vermis
dentate nucleus
2 months
Pre- and postcentral sulcus WM,	PLIC 1/3, CS, optic radiation,
ALIC, anterior pons,	middle cerebellar peduncles,
hippocampus	dentate nuclei
3 months
ALIC complete,	1/2 PLIC
occipital WM at calcarine fissure,
splenium of corpus callosum
4 months
Beginning of frontal WM	Calcarine WM
5 months
Genu of corpus callosum	Anterior pons
6 months
Branching of frontal WM	PLIC complete, ALIC beginning,
	splenium of corpus callosum
7 months
Branching of occipital WM	Optic radiation complete
8 months
Peripheral frontal WM,	ALIC complete,
fine arborization of paracentral and	genu of corpus callosum
occipital WM
10 months	ALIC thick,
	arborization of central motor tracts,
	branching of occipital tracts
11–12 months
Temporal WM	Branching of posterior parietal tracts,
	beginning of frontal tracts
15–18 months	Frontal arborization,
Subcortical WM, U fibers	beginning of temporal WM
24 months	Temporal arborization,
	subcortical WM, U fibers

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