MRI Characteristic of Cerebral White Matter Maturation Patterns in Normal Infants of Assisted Reproductive
Abstract Background Assisted reproductive technology (ART) such as in-vitro fertilization (IVF) and embryo transfer (ET) has been essential in the treatment of infertility, and the number of children born after these procedures has now passed 5 million worldwide. Children born after medically assisted reproduction are at higher risk of adverse birth outcomes than are children conceived naturally. In this study, we leveraged MRI technology to investigate whether ART pregnancy methods: intracytoplasmic sperm injection (ICSI) and ET have any effect on the brain development of offspring by comparing with the NAT pregnancy method. Methods A total of 75 infants were recruited in the study from 3 conception groups: 25 children born after ICSI, 25 children born after IVF-ET and 25 children born after natural pregnancy. Magnetic resonance imaging (MRI) scans provide exceptionally detailed information on how the human brain changes throughout childhood, adolescence, and old age. The use of MRI in the evaluation of the developing brain is well established. Results The results of routine brain scans on T1WI and T2WI showed that there was no significant difference among the 5-7, 11-13, and 23-25 months of infants among ET, ICSI, and NAT groups. The MRI values fluctuate at different time points indicating that they may change with the development of the brain. However, they are on a similar level for different conception groups supporting our previous statistical analysis that MRI values of ICSI and ET groups are not significantly different from NAT. Conclusions The results showed that there was no significant difference in brain development patterns between different modes of conception, which proved that ART does not affect the development of brain myelin in fetuses and infants.