16-week-old twin foetuses, 3D ultrasound scan. At this stage, during the 16th week of development, the foetuses measure around 11.5 centimetres in length. The bones are becoming harder and muscles are developing. Birth occurs at around 38-40 weeks. Ultrasound scanning uses the reflected echoes of high-frequency sound waves to image an unborn baby. This safe, non-invasive method is used routinely in pregnancy to assess the growth and health of the developing foetus, and detect any abnormalities. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / DR NAJEEB LAYYOUS, www.layyous.com |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Länge: | 9 Sekunden |
Seitenverhältnis: | 4:3 |
Restrictions: | - |