TY - JOUR TI - A comparison between 2-D and off-line 3-D ultrasound in the assessment of fetal anatomies: A prospective analysis of 1007 cases AU - Hirides, P. AU - Daskalakis, G. AU - Papantoniou, N. AU - Anastasakis, E. AU - Theodora, M. AU - Blanas, K. AU - Antsaklis, A. JO - Journal of Neonatal-Perinatal Medicine PY - 2012 VL - 5 TODO - 4 SP - 347-355 PB - SN - 1934-5798, 1878-4429 TODO - 10.3233/NPM-1260812 TODO - abdomen; arm; article; bladder; comparative study; crown rump length; female; fetus (anatomy); first trimester pregnancy; gestational age; human; leg; major clinical study; nasal bone; neuroanatomy; nuchal translucency measurement; priority journal; prospective study; skull; spine; stomach; three dimensional imaging TODO - Purpose: To evaluate the use of three-dimensional off-line ultrasonography (3D) as an alternative for examining fetal anatomy and nuchal translucency (NT) in the 1st trimester of pregnancy. Method: A Prospective study of 1007 low risk singleton pregnancies at 11 to 14 weeks of gestation. The gestational age, NT and fetal anatomy (10 anatomic features) were evaluated by off-line three-dimensional (3D) ultrasonography after the standard two-dimensional (2D) examination. The results of the two methods were compared using the 2D as a gold standard. Results: In some of the evaluated parameters the 3D method approximates the conventional 2D results. These parameters are the crown-rump length (CRL), the skull-brain anatomy (96.8%), the spine (89.7%), the upper (91.1%) and lower limbs (87%) and the fetal abdomen (98.5%). Some of the anatomic features revealed statistically significant differences in favor of the 2D examination such as the nasal bone (70.6% with the 3D), the stomach (79.6%) and the urinary bladder (59.6%). The NT was measured with the 3D in 87.5% of cases; although in only 60% values were accurate to the corresponding 2D. Conclusion: The off-line assessment of 3D ultrasound volumes can accurately date gestation and satisfactorily visualize fetal anatomy in about 75% of cases. Yet it seems insufficient for the 1st trimester examination, although with modifications and improvements it might serve a potential screening tool especially for areas with difficult access to advanced prenatal diagnosis. © 2012-IOS Press and the authors. All rights reserved. ER -