Normal Ob Gyne Ultrasound: Dept of Radiology Loyola University Stritch School of Medicine and American Institute for Ultrasound in Medicine AIUM ©AIUM Overview biparietal diameter (BPD), head circumference (HC), abdominal

ultrasound parameters (biparietal diameter [BPD], head circumference [HC], abdominal circumference [AC] and femur length [FL]) of the larger fetus during the second trimester. When the first day of the LMP was uncertain or unknown, or when there was a discrepancy between gestational age based on the LMP and ultrasound dates, Biparietal Diameter and Head Circumference (BPD AND HC): The foetal head measurement must be taken in a cross sectional approach to include the skull, thalamus,septum pellucidum and it must be symmetrical.The foetus's head should be imaged laterally through the parietal bone.The measurement is from the outer edge to the inner edge of the cranium . American Journal of Obstetrics and Gynecology. Volume 136, Issue 6, 15 March 1980, Pages 805-807, 15 March 1980, Pages 805-807 Anterior-Posterior Thigh Diameter Measured by Two-Dimensional Sonography. is a more accurate fetal biometry than biparietal diameter (BPD) and head The APTD may have a role in quality control of second trimester ultrasound examinations and may help in the diagnosis of fetal growth The 068 Fetal Ultrasound Biometrics Phantom facilitates teaching and demonstration of fetal ultrasound examination techniques in a non-stressful situation. A tissue equivalent full fetal model is suspended in a non-echoic, amniotic fluid-like environment. The phantom is housed in a rotatable cylinder. Fetal Dating, Biparietal Diameter, Femur Length, Portable Ultrasound Machine, Automatic Measurement 1. Introduction . Ultrasound scanning in pregnancy has become the standard for care in the high income countries (HIC) [1]. It is currently offered at week 12 or around week 18, or both. Biparietal Diameter The biparietal diameter (BPD) is among the most accurate 2nd trime