title: Foetal twin ultrasound biometry.
abstract: Biparietal diameter growth differs considerably in the twin gestation compared to the singleton gestation; thus the use of a specific standard is recommended. A shift toward lower values is noticed in monochorial twins. In the case of the abdominal diameter growth, instead, no significant difference is found between twins and singletons.
mesh_terms: D002508:Cephalometry; D005260:Female; D005333:Fetus / Q000033:anatomy & histology*; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D010294:Parietal Bone / Q000254:growth & development*; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic; D014463:Ultrasonography