EP07.10: Assessing the pericallosal artery at the 11–14 weeks scan using MvFlow

To assess the visualisation of the Pericallosal artery (PCA) at the 11-14 weeks scan as a indirect sign of normal corpus callosum development. Prospective recruitment of consecutive pregnancies undergoing the 11-14 weeks scan for screening, after checking for normality of NT and anatomy. The presence of the Pericallosal artery was examined using novel tools highly sensitive to detect microvascular flow (MV Flow TM Samsung Hera 10). All the examinations were using transabdominal convex probes of high frequency CA 3-10 Hz). The pericallosal artery was identified starting from the cerebral anterior artery and following a curvilinear course. We measured the length of the whole artery from origin to end. All scans were performed following the ALARA principles. 59 women were included. PCA was identified in all cases, the use of the MV Flow allowed a very detailed anatomic evaluation of the artery and the branching. In one case the measurement of the length of the PCA was not possible because It could not be identified the terminal point of the artery. The length of PCA was 5.97 mm (sd 1,3 mm) increasing from 5,47 at 12 weeks to 6.40 at 13 weeks. The use of the Mvflow in combination with high-frequency abdominal probes allow a detailed exam of the midline, the pericallosal artery can be recognised in its full course in the vast majority of cases, it's of interest to have an indirect sign of corpus callosum integrity that can be depicted early in pregnancy. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.