Illustration of technique. This T2 sequence fetal MRI illustrates a patient with a vein of Galen malformation (VOGM). The procedure is completed by a collaboration between a high-risk Maternal Fetal Medicine specialist introducing a transuterine 19 G needle (red) under ultrasound guidance into the confluence of sinuses and allows access into the varix for a microcatheter (blue) to deliver coils for embolisation (green).