Quadruplet foetuses. Coloured 4-D ultrasound scan of quadruplet foetuses. One foetus is at top right,one at centre left,one at bottom centre and the fourth at bottom right. Quadruplets can result from the simultaneous fertilization of one,two,three or four eggs. Quadruplets occur naturally in 1 in 700,000 pregnancies,but are more common in women who have received fertility treatment,as here. Ultrasound scanning is a diagnostic technique that sends high-frequency sound waves into the body via a transducer. The returning echoes are recorded and used to build an image of an internal structure. Foetal ultrasound scanning is routine during pregnancy | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 3566 px × 2469 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |