All scans were performed using Voluson E8 equipment (GE, Zipf, Austria) with a 5 - 8 MHz 3D transabdominal and 5 - 9 MHz 3D transvaginal transducer. 
Voluson E8
The objective of this study was to prenatally detect corpus callosum pathologies such as agenesis, partial agenesis, hypo- and hyperplasia and enhanced echogenicity.


 All scans were performed using Voluson E8 equipment (GE, Zipf, Austria) with a 5 - 8 MHz 3D transabdominal and 5 - 9 MHz 3D transvaginal transducer.  In all cases of suspected corpus callosum anomaly direct and indirect signs for corpus callosum agenesis and associated malformations were observed.


 Gestational age at the time of diagnosis ranged from 20 to 38 weeks.  12 cases showed agenesis, 11 cases partial agenesis, 5 cases hypoplasia, 2 cases a combination of partial hyper- and hypoplasia and one case a lipoma of the corpus callosum.  By correlating the measures with the function of each affected corpus callosum segment, we can try to get a vague prediction of the neurological prognosis.
GE
All scans were performed using Voluson E8 equipment (GE, Zipf, Austria) with a 5 - 8 MHz 3D transabdominal and 5 - 9 MHz 3D transvaginal transducer. 
Zipf
All scans were performed using Voluson E8 equipment (GE, Zipf, Austria) with a 5 - 8 MHz 3D transabdominal and 5 - 9 MHz 3D transvaginal transducer. 
Austria