title: Prediction of maturity in first trimester of pregnancy by ultrasonic measurement of fetal crown-rump length.
abstract: Three hundred ninety fetal crown-rump measurements by ultrasound echography were performed in order to correlate the crown-rump length with gestational age between the sixth and fourteenth weeks of gestation. A blind trial in 58 patients showed a good correlation of ultrasonically determined age and menstrual age. A graph of normal values was designed and is currently being used in routine work.
mesh_terms: D000886:Anthropometry; D005314:Embryonic and Fetal Development; D005260:Female; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D014463:Ultrasonography