Imaging the fetal corpus callosum in the routine examination- 2D versus 3D ultrasound

E. Comanescu, N. Cernea, F. Tanase, C. Comanescu, A. Nedianu, D. Alexandru

Rezumat: In the project “Fetal Neurosonography-Evaluating the potential of 3D ultrasound in the routine screening” we analyzed the possibilities of evaluating the corpus callosum through 2D and 3D ultrasound in routine investigations. Our work encompasses two studies: a prospective study regarding obtaining a correct image of the corpus callosum with two-dimensional (2D) and three-dimensional (3D) ultrasound on two levels of training (beginner and advanced sonographer) and a retrospective study that targeted the ability to obtain an image of the corpus callosum from a three-dimensional (3D) volume selected from our data base using a computer software. In our prospective study we obtained a correct image of the corpus callosum in 65.38% with 2D ultrasound and 82.69% with 3D ultrasound at the beginner level, and respectively 82.69% and 84.23% for the advanced level. In the retrospective study, the off line manipulation of the volumes showed similar results with values of 81% and 94&. 3D ultrasound allows an easier approach for demonstrating the normal callosum especially for beginners. Introducing the 3D approach in the routine fetal ultrasound will encourage sonographers to obtain an image of the corpus callosum in the difficult cases, where the position of the fetus does not allow us to obtain a median section with 2D ultrasound.
Cuvinte cheie: neurosonography, three-dimensional (3D), ultrasound, corpus callosum.