1.
Can Fam Physician
; 38: 121-8, 1992 Jan.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21229124
RESUMO
First-trimester ultrasound examination is of value to establish dates or assess fetal viability in cases of bleeding but provides limited information on the well-being of the fetus. At between 16 and 20 weeks' gestation, examination of fetal anatomy allows many abnormalities to be detected. Third-trimester ultrasound examination is predominantly for follow up of growth and normal development or of any abnormalities seen earlier.