First trimester screening for holoprosencephaly with choroid plexus morphology (‘butterfly’ sign) and biparietal diameter

UK multicentre project on assessment of risk of trisomy 21 by maternal age and fetal nuchal-translucency thickness at 10–14 weeks of gestation

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Screening for fetal aneuploidies at 11 to 13 weeks

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Increased nuchal translucency with normal karyotype

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Diagnostic Imaging of Fetal Anomalies

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Brains and faces in holoprosencephaly: pre‐ and postnatal description of 30 cases

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Retronasal triangle: a sonographic landmark for the screening of cleft palate in the first trimester

Sepúlveda, W., Wong, A. E., Martínez-Ten, P., & Pérez-Pedregosa, J. (2009) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.7484 · Cited by 136 · see citing works

The 11–13-week scan: diagnosis and outcome of holoprosencephaly, exomphalos and megacystis

Kagan, K. O., Staboulidou, I., Syngelaki, A., Cruz, J., & Nicolaides, K. H. (2010) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.7646 · Cited by 108 · see citing works

First‐Trimester Sonographic Diagnosis of Holoprosencephaly

Sepúlveda, W., Víctor Dezerega, P., & Cecilia Be, R. (2004) · Journal of Ultrasound in Medicine · doi:10.7863/jum.2004.23.6.761 · Cited by 86 · see citing works

Alobar holoprosencephaly at 9 weeks gestational age visualized by two‐ and three‐dimensional ultrasound

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Screening for fetal spina bifida by ultrasound examination in the first trimester of pregnancy using fetal biparietal diameter

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Revisiting first-trimester fetal biometry

Salomon, L. J., Bernard, J. P., Duyme, M., Dorion, A., & Ville, Y. (2003) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.162 · Cited by 68 · see citing works

Small biparietal diameter in fetuses with spina bifida on 11–13‐week and mid‐gestation ultrasound

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Fetal Holoprosencephaly: Associated Malformations and Chromosomal Defects

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Increased nuchal translucency and pregnancy outcome: a retrospective study of 1063 consecutive singleton pregnancies in a single referral institution

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Biparietal diameter at 11–13 weeks' gestation in fetuses with open spina bifida

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Holoproscencephaly

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First-Trimester Ultrasonographic Screening for Trisomy 21 Using Fetal Nuchal Translucency and Nasal Bone

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First‐trimester ultrasound diagnosis of holoprosencephaly: three case reports

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Prenatal diagnosis of lobar holoprosencephaly

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Intraventricular fused fornices: a specific sign of fetal lobar holoprosencephaly

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Early diagnosis of holoprosencephaly

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Prenatal diagnosis of alobar holoprosencephaly at 10 weeks of gestation

Turner, C. D., Silva, S., & Jeanty, P. (1999) · Ultrasound in Obstetrics and Gynecology · doi:10.1046/j.1469-0705.1999.13050360.x · Cited by 25 · see citing works

First trimester diagnosis of cyclopia and holoprosencephaly.

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First trimester sonographic diagnosis of holoprosencephaly

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Monosomy 18p Presenting With Holoprosencephaly and Increased Nuchal Translucency in the First Trimester

Sepúlveda, W. (2009) · Journal of Ultrasound in Medicine · doi:10.7863/jum.2009.28.8.1077 · Cited by 16 · see citing works

Holoprosencephaly at 9 Weeks 6 Days in a Triploid Fetus

Sepúlveda, W., Lutz, I., & Cecilia Be, R. (2007) · Journal of Ultrasound in Medicine · doi:10.7863/jum.2007.26.3.411 · Cited by 11 · see citing works

First-trimester screening for trisomies 18 and 13, triploidy and Turner syndrome by detailed early anomaly scan

Wagner, P., Sonek, J., Hoopmann, M., Abele, H., & Kagan, K. O. (2016) · Ultrasound in Obstetrics & Gynecology · doi:10.1002/uog.15829 · Cited by 68 · see citing works

First‐trimester fetal neurosonography: technique and diagnostic potential

Volpe, N., Dall’Asta, A., di Pasquo, E., Frusca, T., & Ghi, T. (2020) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.23149 · Cited by 70 · see citing works

Sonographic detection of central nervous system defects in the first trimester of pregnancy

Engels, A., Joyeux, L., Brantner, C., Keersmaecker, B. D., Catte, L. D., Baud, D., Deprest, J. A., & Mieghem, T. V. (2016) · Prenatal Diagnosis · doi:10.1002/pd.4770 · Cited by 62 · see citing works

Diagnostic accuracy of random massively parallel sequencing for non-invasive prenatal detection of common autosomal aneuploidies: a collaborative study in Europe

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Ratio of fetal choroid plexus to head size: simple sonographic marker of open spina bifida at 11–13 weeks' gestation

Chaoui, R., Benoit, B., Entezami, M., Frenzel, W., Heling, K. S., Ladendorf, B., Pietzsch, V., Lopez, A. S., & Karl, K. (2019) · Ultrasound in Obstetrics and Gynecology · doi:10.1002/uog.20856 · Cited by 42 · see citing works

Biparietal/transverse abdominal diameter ratio ≤ 1: potential marker for open spina bifida at 11–13‐week scan

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Sonographic spectrum of first‐trimester fetal cephalocele: review of 35 cases

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Holoprosencephaly

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AIUM Practice Parameter for the Performance of Detailed Diagnostic Obstetric Ultrasound Examinations Between 12 Weeks 0 Days and 13 Weeks 6 Days

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First trimester examination of fetal anatomy: clinical practice guideline by the World Association of Perinatal Medicine (WAPM) and the Perinatal Medicine Foundation (PMF)

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Diagnostic accuracy of ultrasound screening for fetal structural abnormalities during the first and second trimester of pregnancy in low-risk and unselected populations

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First Trimester Ultrasound Detection of Fetal Central Nervous System Anomalies

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Detection of non‐cardiac fetal abnormalities on ultrasound at 11–14 weeks: systematic review and meta‐analysis

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SMFM Fetal Anomalies Consult Series #3: Intracranial Anomalies

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Fetal brain anomalies detection during the first trimester: expanding the scope of antenatal sonography

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First‐Trimester Diagnosis of Agnathia‐Otocephaly Complex: A Series of 4 Cases and Review of the Literature

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Ultrasound Measurements of Frontal Horns and the Cavum Septi Pellucidi in Healthy Fetuses in the Second and Third Trimesters of Pregnancy

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Biparietal Diameter–to–Crown‐Rump Length Disproportion in First‐Trimester Fetuses With Holoprosencephaly

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Prenatal Detection of Fetal Anomalies at the 11- to 13-Week Scan—Part I: Brain, Face and Neck

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Sonography of fetal holoprosencephaly: a guide to recognize the lesser varieties

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Fetal Description of the Pancreatic Agenesis and Holoprosencephaly Syndrome Associated to a Specific CNOT1 Variant

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OP 13.09: A biparietal / transverse abdominal diameter ( BPD / TAD ) ratio ≤1: a potential hint for open spina bifida at 11–13 weeks scan

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Das fetale Profil im ersten Trimenon – mehr als nur NT

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First‐trimester choroid‐plexus‐to‐lateral‐ventricle disproportion and prediction of subsequent ventriculomegaly

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Clinical and cost-effectiveness of detailed anomaly ultrasound screening in the first trimester: A mixed-methods study

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Biparietal diameter at 11 to 13 weeks' gestation in fetuses with holoprosencephaly

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Clinical article: screening for trisomy 13 using traditional combined screening versus an ultrasound-based protocol

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Basic sonographic examination of the fetal brain at 11–13 weeks' gestation: Rationale for a simple and reliable four‐step technique

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Further evidence for complex inheritance of holoprosencephaly: Lessons learned from pre‐ and postnatal diagnostic testing in Germany

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2014 First-trimester ultrasound forum from the Korean Society of Ultrasound in Obstetrics and Gynecology

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Prenatal Diagnosis of Agnathia/Otocephaly: Associations and Outcomes-Large Case Series and Review of Literature

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The First-Trimester Fetal Head and Brain

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Cebocephaly

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How to get the most from axial views of the fetal brain: applying the principles of neurosonography to screening examination of the supratentorial central nervous system

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The Fetal Brain in Fetuses with Orofacial Abnormalities

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Fetal Anomalies

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Características ultrasonográficas en primer trimestre de trisomía 13 o síndrome de Patau, a propósito de un caso

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Prenatal Diagnosis of Fetal Malformations by Ultrasound

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First-Trimester Ultrasound: A Comparative Review of Guidelines

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Evaluation of the normal ratio of fetal brain choroidal plexus size to fetal head size at 11 to 13 weeks of gestation to obtain useful sonographic markers in spina bifida rule out

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Three-Dimensional Ultrasound: A Role in Early Pregnancy?

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First-Trimester Fetal Brain

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