Ventriculomegaly (VM) is one of the most common disease in fetuses; however, DWI studies during gestation are scarce. In this work, DWI was performed in normal and VM fetal brains at different gestational ages (GA) and ADC was calculated. Denoising and artifacts corrections were used to improve signal-to-noise ratio and the reliability of measures. We found significant variations in ADC as GA increases, reflecting microstructural changes due to brain maturation. Moreover, ventricles dilatation measured on DWIs provided an accurate classification of VM. DWI with artifacts corrections could be a powerful tool to evaluate brain abnormalities and accurately diagnose VM.