Table 1.

Brain metrics, the selected slices and the landmarks

Measure (see landmarks in fig. 1)	Slice	Landmark
Tissues measures
1 - Bifrontal diameter	Coronal T2W	Level of the olfactory sulci, 4 teeth apparent, maximal distance perpendicular to the interhemispheric fissure
2a&2b - Frontal Lobe Height Left & Right	Coronal T2W	Idem to 1, Level of the gyrus rectus
3a - Brain Biparietal Diameter	Coronal T2W	Level of the third ventricle, cochlea and basilar truncus apparent
3b - Bone Biparietal Diameter	Coronal T2W	Level of the third ventricle, cochlea and basilar truncus apparent, inner limits of the skull
8- Transverse Cerebellar Diameter	Coronal T2W	Level of the atria (plexus choroid apparent), maximal horizontal distance
9 - Fronto-occipital diameter	Sagittal T1W	Midline, maximal distance from the anterior to the posterior edge of the brain
10 - Length of the corpus callosum	Sagittal T1W	Midline from the genu to the posterior extremity of the splenium
11 - Surface of the vermis	Sagittal T1W	Midline
Fluid measures
Extra-axial space
4a&4b - Cranio-caudal interopercular distance Left & Right	Coronal T2W	Level of the third ventricle cf biparietal diameter
5 - Interhemispheric distance	Coronal T2W	Level of the third ventricle
Intracerebral space
6 - Third ventricle	Coronal T2W	Level of the third ventricle
7a&7b - Right and Left Lateral ventricle atrial diameter	Coronal T2W	Level of the atria (plexus choroid apparent) on an axis perpendicular to that of the ventricle at mid height of the ventricle’s size (same as Transverse Cerebellar Diameter)