J. Sonek

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First‐trimester screening for early and late preeclampsia using maternal characteristics, biomarkers, and estimated placental volume

D. Mckenna, H. Kliman, J. Sonek, 2018, American journal of obstetrics and gynecology.

Cervical sonography: a review

J. Sonek, C. Shellhaas, Jiri Sonek, 1998, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Gottesfeld-Hohler Memorial Foundation Risk Assessment for Early-Onset Preeclampsia in the United States: Think Tank Summary.

A. Caughey, G. Saade, J. Hobbins, 2019, Obstetrics and gynecology.

First trimester uterine artery pulsatility index levels in euploid and aneuploid pregnancies

K. Kagan, M. Hoopmann, S. Brucker, 2019, Archives of Gynecology and Obstetrics.

First‐trimester risk assessment based on ultrasound and cell‐free DNA vs combined screening: a randomized controlled trial

K. Kagan, H. Abele, M. Hoopmann, 2018, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Perinatal outcome associated with sonographically detected globular placenta.

D. Mckenna, J. Sonek, G. Ventolini, 2006, The Journal of reproductive medicine.

Combined screening test for trisomy 21 – is it as efficient as we believe?

J. Sonek, A. Knafel, M. Wiecheć, 2017, Journal of perinatal medicine.

A randomized trial of micronized progesterone for the prevention of recurrent preterm birth.

D. Mckenna, J. Sonek, C. Downing, 2011, American journal of perinatology.

Cervical competence as a continuum: a study of ultrasonographic cervical length and obstetric performance.

J. Iams, P. Samuels, J. Sonek, 1995, American journal of obstetrics and gynecology.

Absence of nasal bone in fetuses with trisomy 21 at 11–14 weeks of gestation: an observational study

S. Cicero, K. Nicolaides, A. Papageorghiou, 2001, The Lancet.

Fetal nasal bone in screening for Down’s syndrome

S. Cicero, K. Nicolaides, G. Rembouskos, 2006 .

First‐trimester ductus venosus velocity ratio as a marker of major cardiac defects

M. Hoopmann, U. Gembruch, J. Sonek, 2019, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Nuchal translucency and the risk of congenital heart disease.

J. Hyett, J. Sonek, Kypros Nicolaides, 2007, Obstetrics and gynecology.

Increased nuchal translucency with normal karyotype.

K. Nicolaides, A. Souka, J. Hyett, 2005, American journal of obstetrics and gynecology.

Effectiveness of the contemporary treatment of preterm labor: a comparison with a historical cohort

K. Kagan, H. Abele, M. Hoopmann, 2017, Archives of Gynecology and Obstetrics.

Repeat Measurement of Cervical Length in Women with Threatened Preterm Labor

H. Abele, M. Hoopmann, J. Sonek, 2016, Geburtshilfe und Frauenheilkunde.

Frontomaxillary facial angle in chromosomally normal fetuses at 11 + 0 to 13 + 6 weeks

K. Nicolaides, K. Nicolaides, N. Persico, 2007, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Principles of first trimester screening in the age of non-invasive prenatal diagnosis: screening for other major defects and pregnancy complications

K. Kagan, M. Hoopmann, J. Sonek, 2017, Archives of Gynecology and Obstetrics.

Measurement of Cervical Length in Pregnancy: Comparison Between Vaginal Ultrasonography and Digital Examination

S. Gabbe, J. Iams, M. Landon, 1990, Obstetrics and gynecology.

Morphologie changes in the human amnion epithelium that accompany labor as seen with scanning and transmission electron microscopy

S. Gabbe, D. Kniss, J. Iams, 1991 .

Evidence of a role for protein kinase C in epidermal growth factor-induced prostaglandin E2 synthesis in amnion cells

S. Gabbe, D. Kniss, J. Sonek, 1990 .

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

H. Abele, M. Hoopmann, J. Sonek, 2016, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Inverted Pyramid of Care.

K. Kagan, K. Nicolaides, J. Sonek, 2016, Clinics in laboratory medicine.

Shortening fraction of the right ventricle: a comparison between euploid and trisomy 21 fetuses at week 11 to week 13 and 6 days of gestation

J. Sonek, V. Tomek, P. Calda, 2011, Prenatal diagnosis.

Left ventricle shortening fraction: a comparison between euploid and trisomy 21 fetuses in the first trimester

J. Sonek, V. Tomek, P. Calda, 2010, Prenatal diagnosis.

Maxillary length at 11–14 weeks of gestation in fetuses with trisomy 21

S. Cicero, G. Rembouskos, K. Nicolaides, 2004, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Frontomaxillary facial angle in trisomy 21 fetuses at 16–24 weeks of gestation

K. Nicolaides, F. Molina, N. Persico, 2008, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

The frontal space measurement in euploid and aneuploid pregnancies at 11–13 weeks' gestation

K. Kagan, M. Hoopmann, J. Sonek, 2013, Prenatal diagnosis.

Prefrontal space ratio in second‐ and third‐trimester screening for trisomy 21

H. Abele, M. Hoopmann, J. Sonek, 2013, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Frontomaxillary facial angle in fetuses with trisomy 21 at 11-13(6) weeks.

Nicola Persico, Kypros H Nicolaides, K. Nicolaides, 2007, American journal of obstetrics and gynecology.

How to measure cervical length

K. Kagan, J. Sonek, K. Kagan, 2015, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Position of the conus medullaris in fetuses with skeletal dysplasia

K. Kagan, M. Hoopmann, A. Dufke, 2012, Prenatal diagnosis.

First Trimester Ultrasound Assessment for Fetal Aneuploidy

J. Sonek, J. Hyett, R. Mogra, 2014, Clinical obstetrics and gynecology.

Second Trimester Ultrasound Markers of Fetal Aneuploidy

J. Sonek, Jiri Sonek, Christopher Croom, 2014, Clinical obstetrics and gynecology.

Cervical length may change during ultrasonographic examination.

J. Iams, J. Sonek, F. Johnson, 1990, American Journal of Obstetrics and Gynecology.

Identification of fetal aneuploidy with dual‐probe fluorescence in situ hybridization analysis in circulating trophoblasts after enrichment using a high‐sensitivity microfluidic platform

J. Sonek, A. Hiett, P. Buchanan, 2021, Prenatal diagnosis.

Spontaneous Regression of a Large Intrathoracic Fetal Lesion Before Birth

J. Iams, J. Sonek, M. Foley, 1991, American journal of perinatology.

Outcome of pregnancies with spontaneous PPROM before 24+0 weeks' gestation.

K. Kagan, H. Abele, M. Hoopmann, 2016, European journal of obstetrics, gynecology, and reproductive biology.

First trimester ultrasonography in screening and detection of fetal anomalies

J. Sonek, Jiri Sonek, 2007, American journal of medical genetics. Part C, Seminars in medical genetics.

Serial sonographic growth assessment in pregnancies complicated by an isolated single umbilical artery.

J. Sonek, G. Ventolini, R. Neiger, 2008, American journal of perinatology.

Pregnancy outcome in isolated single umbilical artery.

B. Sibai, J. Sonek, G. Ventolini, 2008, American journal of perinatology.

First Trimester Ultrasound for Fetal Aneuploidy

J. Hyett, J. Sonek, R. Mogra, 2014 .

Antenatal treatment options for primary cytomegalovirus infections.

K. Kagan, J. Sonek, K. Hamprecht, 2018, Current opinion in obstetrics & gynecology.

Antenatal screening for chromosomal abnormalities

K. Kagan, J. Sonek, P. Kozlowski, 2022, Archives of Gynecology and Obstetrics.

Increased Umbilical Artery Pulsatility Index in Third-Trimester Fetuses with Trisomy 21

K. Kagan, H. Abele, M. Hoopmann, 2015, Fetal Diagnosis and Therapy.

Fetal profile in fetuses with open spina bifida

K. Kagan, H. Abele, M. Hoopmann, 2020, Archives of Gynecology and Obstetrics.

First-trimester septated cystic hygroma: prevalence, natural history, and pediatric outcome.

J. Sonek, R. Neiger, C. Croom, 2006, Obstetrics and gynecology.

Frontomaxillary facial angles in screening for trisomy 21 at 14-23 weeks' gestation.

K. Nicolaides, J. Sonek, C. Downing, 2007, American journal of obstetrics and gynecology.

Pregnancy Complicated by an Intrauterine Foreign Body

J. Sonek, G. Ventolini, R. Neiger, 2008, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

J. Sonek, G. Ventolini, R. Neiger, 2006, The Journal of reproductive medicine.

Single and repeat cervical‐length measurement in twin gestation with threatened preterm labor

K. Kagan, H. Abele, M. Hoopmann, 2020, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

453: A randomized placebo controlled trail of oral micronized progesterone to prevent recurrent preterm birth

J. Sonek, C. Croom, M. Glover, 2009 .

Cardiac axis in fetuses with abdominal wall defects

J. Sonek, D. McKenna, J. Sonek, 2006, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Effect of Tocolytics on Surfactant Secretion When Administered with Betamethasone: An in Vitro Study

B. Sibai, J. Sonek, D. Cool, 2015, American Journal of Perinatology.

Principles of first trimester screening in the age of non-invasive prenatal diagnosis: screening for chromosomal abnormalities

K. Kagan, M. Hoopmann, J. Sonek, 2017, Archives of Gynecology and Obstetrics.

Maxillary length in euploid and aneuploid fetuses

K. Kagan, H. Abele, M. Hoopmann, 2017, Archives of Gynecology and Obstetrics.

First trimester identification of fetal sex by ultrasound.

J. Sonek, D. McKenna, Emma C Schaefer, 2023, Archives of gynecology and obstetrics.

Facial markers in second‐ and third‐trimester fetuses with trisomy 18 or 13, triploidy or Turner syndrome

K. Kagan, H. Abele, M. Hoopmann, 2015, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

False-Positive Rate in First-Trimester Screening Based on Ultrasound and Cell-Free DNA versus First-Trimester Combined Screening with Additional Ultrasound Markers

K. Kagan, H. Abele, M. Hoopmann, 2018, Fetal Diagnosis and Therapy.

Optimal caliper placement: manual vs automated methods

K. Kagan, M. Hoopmann, K. Pintoffl, 2014, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Spontaneous rupture of uteroovarian veins in pregnancy: two case reports.

F. Zuspan, J. Sonek, M. Foley, 1987, American journal of obstetrics and gynecology.

Frontomaxillary and mandibulomaxillary facial angles at 11 + 0 to 13 + 6 weeks in fetuses with trisomy 18

K. Nicolaides, N. Persico, J. Sonek, 2007, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Frontal space distance in facial clefts and retrognathia at 11–13 weeks' gestation

H. Abele, M. Hoopmann, J. Sonek, 2015, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

A cc ep te d A rti cl e The frontal space measurement in facial clefts and retrognathia at 11-13 weeks ́ gestation

K. Kagan, H. Abele, M. Hoopmann, 2015 .

The cavum septi pellucidi in euploid and aneuploid fetuses

H. Abele, M. Hoopmann, J. Sonek, 2013, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Nasal bone assessment in prenatal screening for trisomy 21.

S. Cicero, K. Nicolaides, J. Sonek, 2006, American journal of obstetrics and gynecology.

Prenatal ultrasonographic diagnosis of nasal bone abnormalities in three fetuses with Down syndrome.

K. Nicolaides, J. Sonek, 2002, American journal of obstetrics and gynecology.

False-positive rates in screening for trisomies 18 and 13: a comparison between first-trimester combined screening and a cfDNA-based approach

K. Kagan, H. Abele, M. Hoopmann, 2018, Archives of Gynecology and Obstetrics.

First trimester ultrasound screening for Down syndrome based on maternal age, fetal nuchal translucency and different combinations of the additional markers nasal bone, tricuspid and ductus venosus flow

K. Kagan, H. Abele, M. Hoopmann, 2015, Prenatal diagnosis.

Detection of 69,XXX karyotype in circulating trophoblasts using fluorescence in‐situ hybridization after enrichment using novel high‐throughput microfluidic platform

J. Sonek, R. Pfau, R. Muller, 2021, Ultrasound in Obstetrics and Gynecology.

First‐trimester ultrasound screening for trisomy 21 based on maternal age, fetal nuchal translucency, and different methods of ductus venosus assessment

K. Kagan, H. Abele, M. Hoopmann, 2017, Prenatal diagnosis.

Antenatal diagnosis of sacral agenesis syndrome in a pregnancy complicated by diabetes mellitus.

S. Gabbe, M. Landon, J. Sonek, 1990, American journal of obstetrics and gynecology.

Prediction of Neonatal Growth Restriction in Fetuses With Gastroschisis by Early Third Trimester Ultrasonography Utilizing Contemporary Birth Weight Percentiles

J. Sonek, Ming K. Zhou, S. Wiegand, 2022, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

Vasa previa: easy to miss

K. Kagan, M. Hoopmann, J. Sonek, 2018, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Nasal bone in screening for trisomy 21: defining hypoplasia.

J. Sonek, 2007, American journal of obstetrics and gynecology.

Nasal Bone in Screening for Trisomy 21

S. Cicero, K. Nicolaides, J. Sonek, 2006 .

Nasal bone hypoplasia in trisomy 21 at 15–22 weeks' gestation

S. Cicero, K. Nicolaides, K. Nicolaides, 2003, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Nasal bone length throughout gestation: normal ranges based on 3537 fetal ultrasound measurements

K. Nicolaides, J. Sonek, C. Croom, 2003, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

First trimester screening for major cardiac defects based on the ductus venosus flow in fetuses with trisomy 21

K. Kagan, H. Abele, M. Hoopmann, 2018, Prenatal diagnosis.

Comparison of right ventricular measurements and SFRV in fetuses with and without tricuspid regurgitation at 11+0 and 13+6 weeks’ gestation

J. Sonek, P. Calda, M. Břešťák, 2014, Journal of Maternal-Fetal & Neonatal Medicine.

Sphenofrontal distance in euploid and aneuploid fetuses

H. Abele, M. Hoopmann, J. Sonek, 2016, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

What will be the role of first‐trimester ultrasound if cell‐free DNA screening for aneuploidy becomes routine?

H. Cuckle, J. Sonek, J. Sonek, 2014, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

Antenatal treatment options for primary cytomegalovirus infections.

K. Kagan, J. Sonek, K. Hamprecht, 2018, Current opinion in obstetrics & gynecology.

Effects of a New Patient Safety-Driven Oxytocin Dosing Protocol on Postpartum Hemorrhage

J. Sonek, Kari Rudinsky, D. McKenna, 2014, Journal of pregnancy.

Artificial intelligence and amniotic fluid multiomics: prediction of perinatal outcome in asymptomatic women with short cervix

T. Bjorndahl, A. Yilmaz, R. Bahado-Singh, 2019, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.

A pragmatic evaluation of the implementation and acceptance of a universal second trimester cervical length screening program in an un-selected population

J. Sonek, C. Downing, D. McKenna, 2023, Archives of Gynecology and Obstetrics.