Karl Oliver Kagan

First‐trimester screening for trisomy 21 by free beta‐human chorionic gonadotropin and pregnancy‐associated plasma protein‐A: impact of maternal and pregnancy characteristics

Karl Oliver Kagan, D. Wright, Kevin Spencer et al. · Ultrasound in Obstetrics and Gynecology · 2008 · 285 citations · Full text

A mixture model of nuchal translucency thickness in screening for chromosomal defects

D. Wright, Karl Oliver Kagan, Francisca S. Molina et al. · Ultrasound in Obstetrics and Gynecology · 2008 · 252 citations · Full text

Chromosomal Defects, Cytogenetics, Nt Thickness +30

Ductus venosus Doppler in screening for trisomies 21, 18 and 13 and Turner syndrome at 11–13 weeks of gestation

Nerea Maíz, Catalina Valencia, Karl Oliver Kagan et al. · Ultrasound in Obstetrics and Gynecology · 2009 · 203 citations

Measurement of tumour size with mammography, sonography and magnetic resonance imaging as compared to histological tumour size in primary breast cancer

Ines Gruber, Miriam Rueckert, Karl Oliver Kagan et al. · BMC Cancer · 2013 · 195 citations · Full text

Discordance in nuchal translucency thickness in the prediction of severe twin‐to‐twin transfusion syndrome

Karl Oliver Kagan, A. Gazzoni, Gerardo Sepúlveda-González et al. · Ultrasound in Obstetrics and Gynecology · 2007 · 180 citations