Imaging technique that creates a picture of internal body structures from differentially reflected ultrasound waves.
Note: By using this technique, the human embryo can be observed
in utero as early as
\(\pu{5 1\!{/}\! 2 weeks}\) of
gestation:
fetal monitoring by this technique (obstetric ultrasound) is standard.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 816 (https://doi.org/10.1515/pac-2015-1202)