Concepedia
Ultrasound in Obstetrics and Gynecology · 2003 · 89 citations · 6 references
Open access
The minimum number of scans required for an experienced sonographer to become competent in examining the fetal nasal bone is on average 80, with a range of 40-120.
6
Absence of nasal bone in fetuses with trisomy 21 at 11–14 weeks of gestation: an observational study
Simona Cicero, P. Curcio, Aris T. Papageorghiou et al. · The Lancet · 2001 · 525 citations
Fetal Medicine, Pediatrics, Nasal Bone +6
Integrated ultrasound and biochemical screening for trisomy 21 using fetal nuchal translucency, absent fetal nasal bone, free β‐hCG and PAPP‐A at 11 to 14 weeks
S. Cicero, G. Rembouskos, Kevin Spencer et al. · Prenatal Diagnosis · 2003 · 147 citations
Association between first trimester absence of fetal nasal bone on ultrasound and Down syndrome
Lucas Otaño, Horacio Aiello, Laura Igarzábal et al. · Prenatal Diagnosis · 2002 · 122 citations
Measurement of nasal bone length at 11–14 weeks of pregnancy and its potential role in Down syndrome risk assessment
F. Orlandi, C. M. Bilardo, M Campogrande et al. · Ultrasound in Obstetrics and Gynecology · 2003 · 120 citations · Full text
Absence of fetal nasal bone and aneuploidies at first‐trimester nuchal translucency screening in unselected pregnancies
Maria Angelica Zoppi, Rosa Maria Ibba, Carolina Axiana et al. · Prenatal Diagnosis · 2003 · 120 citations