Ultrasonography in the detection of fetal anomalies in early pregnancy

Ultrasound structural fetal anomaly screening: an update

“…Ultrasound screening at 11–14 weeks in detecting structural fetal anomalies has been studied in low-risk13 17 18 19 20 21 and high-risk11 populations. Fetal anomaly detection is reported at 90% (100% on combining the early scan with an 18–20 week scan) in a high-risk population12 and 59% in an unselected population (81% detection when 11–14 and 18–20 week scans are combined) 17.…”

“…Fetal anomaly detection is reported at 90% (100% on combining the early scan with an 18–20 week scan) in a high-risk population12 and 59% in an unselected population (81% detection when 11–14 and 18–20 week scans are combined) 17. The gestation at which it is reasonable to expect that specific abnormalities are identified is shown in table 5.…”

Scanning techniques in obstetrics and gynaecology

“…1,9,13,29,34,[42][43][44]51,60 The following information should be obtained. When performing the first-trimester scan (usually between 11 and 14 postmenstrual weeks), a transabdominal or transvaginal probe may be used.…”

“…13,29,34,60 In certain circumstances, a 'limited' ultrasound examination may be appropriate and desirable. Nonetheless, a brief survey of fetal anatomy and maternal pelvic organs should be performed.…”

Dépistage de la trisomie 21 par le test combiné du premier trimestre suivi par l'échographie du second trimestre en population générale

“…La plus grande des trois mesures a été retenue pour le calcul de risque. L'identification des anomalies foetales majeures pouvant être diagnostiquées par l'échographie du premier trimestre a été aussi rappelée [18,19].…”