FIG 2. Myelin is shown in numerous gray and white matter structures in the preterm brain on T1-weighted conventional spin-echo images.

A, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the gracile and cuneate fasciculi (arrow) as high signal intensity.

B, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the medial longitudinal fasciculus (long arrow) and in the inferior cerebellar peduncles (short arrow) as high signal intensity.

C, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the cerebellar vermis (arrowhead) and in the dentate nucleus of the cerebellum (arrow) as high signal intensity.

D, Transverse T1-weighted conventional spin-echo image of an infant at 30 weeks gestational age shows myelin in the superior cerebellar peduncles (arrow) as high signal intensity.

E, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the medial lemnisci as high signal intensity (arrow).

F, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age, obtained at the level of the mesencephalon, shows myelin in the lateral lemnisci (arrow) as high signal intensity.

G, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the decussation of the superior cerebellar peduncles (arrow) as high signal intensity.

H, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age shows myelin in the subthalamic nuclei (arrow) as high signal intensity.

I, Transverse T1-weighted conventional spin-echo image of an infant at 28 weeks gestational age, obtained at the level of the basal ganglia, shows myelin in the ventrolateral nuclei of the thalmus (arrow) as high signal intensity.