Twin foetuses. Ultrasound scan of twin foetuses aged around 20 weeks. Their heads are at centre left and right. Non-identical (dizygotic) twins develo
Twin foetuses. Ultrasound scan of twin foetuses aged around 20 weeks. Their heads are at centre left and right. Non-identical (dizygotic) twins develop when two separate eggs are released from ovaries and fertilised. Identical (monozygotic) twins occur when the two cells formed by the first division of a fertilised egg develop independently. In ultrasound scanning, high- frequency sound waves are emitted into the body via a transducer. The returning echoes are recorded and used to build an image of internal structures.
Size: 3500px × 2494px
Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 20-weeks-, 5-months, anatomy, babies, baby, black--white, body, developing, development, diagnosis, diagnostics, fetus, foetal, foetus, foetuses, healthcare, human, image, medical, medicine, obstetrics, pregnancy, pregnant, reproduction, scan, sonography, sound, twins, ultrasound, waves
