This study has been undertaken to define and analyze the mean of the four fetal biometric parameters (BPD, FL HC, and AC) for gestational weeks from 18 to 38 weeks, for the local population of this region of Southern Punjab, India. Methods Developed by Dr. Frank Hadlock, this technique involves calculating fetal size based on a combination of parameters, such as biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL). Today, we're going to break down the normal ranges for four key measurements: BPD (Biparietal Diameter), HC (Head Circumference), AC (Abdominal Circumference), and FL (Femur Length). 2. What measurements are taken during a fetal biometry scan? During a fetal biometry scan, the technician typically measures the biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) to evaluate the baby’s growth and development. 3. Why is fetal biometry important?