Jean-Marc Levaillant is a gynecologist-obstetrician specialized in fetal medicine at the Bicetre Prenatal Diagnosis Center and the Créteil Center for Women and Fetal Imaging, in France. Jean-Philippe Bault is a gynecologist-obstetrician specialized in fetal medicine at the Poissy Prenatal Diagnosis Center, France. Bernard Benoit is a gynecologist-obstetrician specialized in fetal medicine at the Princess GRACE Hospital,   Monaco.Jean-Marc Levaillant, Bernard Benoit, and Jean-Philippe Bault are all three pioneers in the field and teach various university and master’s degree ultrasound programs, and run the Kremlin-Bicêtre 3D Ultrasound School. They share with readers their diagnostic approach and their passion for 2D and 3D ultrasound. Gérard Couly, a maxilla-facial surgeon, is the founding father of this specialty and kindly wrote the first chapter on innovative embryology adapted to ultrasonographers. It is of rare intelligence and will remain a reference for understanding ultrasonography of the face.

• Foreword.- Preface.- Introduction.- Key phases in cranial-facial development.- Cellular phenotypes created by the neural crest.- Summary.- Chapter 1. Normal Face

Jean-Marc Levaillant is a gynecologist-obstetrician specialized in fetal medicine at the Bicetre Prenatal Diagnosis Center and the Créteil Center for Women and Fetal Imaging, in France. Jean-Philippe Bault is a gynecologist-obstetrician specialized in fetal medicine at the Poissy Prenatal Diagnosis Center, France. Bernard Benoit is a gynecologist-obstetrician specialized in fetal medicine at the Princess GRACE Hospital,   Monaco.Jean-Marc Levaillant, Bernard Benoit, and Jean-Philippe Bault are all three pioneers in the field and teach various university and master’s degree ultrasound programs, and run the Kremlin-Bicêtre 3D Ultrasound School. They share with readers their diagnostic approach and their passion for 2D and 3D ultrasound. Gérard Couly, a maxilla-facial surgeon, is the founding father of this specialty and kindly wrote the first chapter on innovative embryology adapted to ultrasonographers. It is of rare intelligence and will remain a reference for understanding ultrasonography of the face.

• Foreword.- Preface.- Introduction.- Key phases in cranial-facial development.- Cellular phenotypes created by the neural crest.- Summary.- Chapter 1. Normal Face

Jean-Marc Levaillant is a gynecologist-obstetrician specialized in fetal medicine at the Bicetre Prenatal Diagnosis Center and the Créteil Center for Women and Fetal Imaging, in France. Jean-Philippe Bault is a gynecologist-obstetrician specialized in fetal medicine at the Poissy Prenatal Diagnosis Center, France. Bernard Benoit is a gynecologist-obstetrician specialized in fetal medicine at the Princess GRACE Hospital,   Monaco.Jean-Marc Levaillant, Bernard Benoit, and Jean-Philippe Bault are all three pioneers in the field and teach various university and master’s degree ultrasound programs, and run the Kremlin-Bicêtre 3D Ultrasound School. They share with readers their diagnostic approach and their passion for 2D and 3D ultrasound. Gérard Couly, a maxilla-facial surgeon, is the founding father of this specialty and kindly wrote the first chapter on innovative embryology adapted to ultrasonographers. It is of rare intelligence and will remain a reference for understanding ultrasonography of the face.

• Foreword.- Preface.- Introduction.- Key phases in cranial-facial development.- Cellular phenotypes created by the neural crest.- Summary.- Chapter 1. Normal Face