Sonographic demonstration of sulci and gyri on the convex surface in normal fetus using 3D-ICRV rendering technology

• Published in: Ultraschall in der Medizin
• Main Authors: Chen, Zhixuan, Ma, Ya, Wen, Huaxuan, Liao, Yimei, Ouyang, Yan, Liang, BoCheng, Liang, Meiling, Li, Shengli
• Format: Journal Article
• Language: English
• Published: Germany 04.07.2023
• ISSN: 1438-8782

To demonstrate sulci and gyri morphological alteration on convex surface in normal fetus using an innovative three-dimensional inversion and Crystalvue and Realisticvue (3D-ICRV) rendering technology. 3D fetal brain volumes were collected from low risk singleton pregnancies between 15+0 and 35+6 gestational weeks. Volumes were acquired from transthalamic axial plane by transabdominal ultrasonography, which were then post-processed with Crystalvue, Realisticvue rendering software and inversion mode. Volumes quality were assessed. The anatomic definition of the sulci and gyri were determined according to its location and orientation. The morphology alteration and sulcus display rates were recorded in sequential gestational weeks order. Follow up data were collected in all cases.  Results: Of 300 fetuses, 294 fetuses (294 brain volumes)(98%)with qualified fetal brain volumes were included (n=294, median 27 gestation weeks). 6 fetuses with unsatisfied 3D-ICRV images quality were excluded. Morphology of sulci and gyri on the brain convex surface could be demonstrated clearly on 3D-ICRV images. Sylvian fissure was the first structure to be recognized. From 25 to 30 weeks, other sulci and gyri became visible. An ascending trend in display rate of sulci was found in this period. Follow up showed no detectable anomalies. 3D-ICRV rendering technology is differentiated from traditional 3D ultrasound. It can provide a vivid and intuitive visualization for sulci and gyri on brain surface prenatally. Moreover, it may offer more new ideas for neurodevelopment exploration.