Table 1:

Summary of imaging findings on fetal MR in the cohort as a whole

Imaging Findings	% of Cohort
Cerebellar ectopia	92.2% (94/102)
Fetal Chiari grade
1	7.8% (8/102)
2	12.7% (13/102)
3	79.4% (81/102)
Effacement of prepontine cistern	92.2% (94/102)
Lateral ventricular size
Normal	20.6% (21/102)
Mild-moderate ventriculomegaly	57.8% (59/102)
Severe ventriculomegaly	21.6% (22/102)
Third ventriculomegaly	9.8% (10/102)
Lateral ventricular rupture	1% (1/102)
Extra-axial CSF effacement	92.1% (94/102)