4-D Scan Image of Fetuses (IMAGE) Durham University Caption 4-D scans show a sequence of movements displayed by two fetuses at 32 weeks gestation. The image shows fetal movements in a fetus whose mother is a smoker (top) and a fetus whose mother is a non-smoker (below). Credit Dr. Nadja Reissland, Durham University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.